MCQs Functions of Body Parts of Plants and Animals Sainik School Exam Class 6 GK Questions and Answers

Anand Classes provides Important multiple-choice questions (MCQs) on the functions of body parts of plants and animals for AISSEE Class 6. Each question comes with a detailed answer and explanation. Ideal for Sainik School Entrance Exam preparation. Buy complete study material from Anand Classes and join the best coaching in Jalandhar for AISSEE.


General Knowledge: Functions of Body Parts of Plants and Animals – MCQs


1. Which part of the plant is responsible for photosynthesis?

a) Root
b) Stem
c) Leaf
d) Flower

Answer: c) Leaf
Explanation: Leaves contain chlorophyll, which absorbs sunlight and helps in the process of photosynthesis to make food for the plant.


2. What is the function of roots in plants?

a) Absorbing water and minerals
b) Making food
c) Producing flowers
d) Releasing oxygen

Answer: a) Absorbing water and minerals
Explanation: Roots help in absorbing water and minerals from the soil and provide support to the plant.


3. Which plant part helps in reproduction?

a) Stem
b) Leaves
c) Flower
d) Roots

Answer: c) Flower
Explanation: Flowers contain reproductive organs that help in pollination and seed formation.


4. The movement of water from roots to leaves occurs through which plant tissue?

a) Phloem
b) Xylem
c) Epidermis
d) Cambium

Answer: b) Xylem
Explanation: Xylem transports water and minerals from the roots to other parts of the plant.


5. Which part of the plant stores food?

a) Leaves
b) Roots
c) Fruits
d) All of the above

Answer: d) All of the above
Explanation: Different parts of plants store food; for example, leaves in cabbage, roots in carrot, and fruits in apple.


6. What is the main function of the heart?

a) Digestion
b) Pumping blood
c) Breathing
d) Excretion

Answer: b) Pumping blood
Explanation: The heart pumps oxygenated and deoxygenated blood throughout the body to ensure the supply of oxygen and nutrients.


7. The lungs help in which function?

a) Circulation
b) Digestion
c) Respiration
d) Excretion

Answer: c) Respiration
Explanation: Lungs help in breathing by exchanging oxygen and carbon dioxide in the body.


8. The brain is part of which system?

a) Respiratory system
b) Nervous system
c) Digestive system
d) Excretory system

Answer: b) Nervous system
Explanation: The brain controls all body functions and processes information through the nervous system.


9. Which body organ helps in digestion by producing digestive juices?

a) Liver
b) Heart
c) Lungs
d) Kidney

Answer: a) Liver
Explanation: The liver produces bile, which helps in digesting fats.


10. What is the function of the kidneys?

a) Breathing
b) Removing waste
c) Pumping blood
d) Controlling movement

Answer: b) Removing waste
Explanation: Kidneys filter waste from the blood and produce urine to remove excess water and toxins.


11. What is the main function of the stem in a plant?

a) Transporting water and nutrients
b) Absorbing sunlight
c) Producing seeds
d) Capturing oxygen

Answer: a) Transporting water and nutrients
Explanation: The stem provides support to the plant and helps transport water and nutrients from the roots to the leaves.


12. Which part of the plant helps in the exchange of gases?

a) Root
b) Stem
c) Leaf
d) Flower

Answer: c) Leaf
Explanation: Leaves have small openings called stomata that help in the exchange of gases like oxygen and carbon dioxide.


13. What is the function of petals in a flower?

a) To protect the flower
b) To absorb water
c) To attract pollinators
d) To store food

Answer: c) To attract pollinators
Explanation: Petals are brightly colored to attract insects and birds, which help in pollination.


14. The function of seeds in plants is to:

a) Store food
b) Reproduce new plants
c) Absorb minerals
d) Protect the roots

Answer: b) Reproduce new plants
Explanation: Seeds contain the embryo of a new plant and help in reproduction when they germinate.


15. What is the function of phloem in plants?

a) Transport water
b) Transport food
c) Absorb sunlight
d) Help in photosynthesis

Answer: b) Transport food
Explanation: Phloem transports food (sugars) produced in the leaves to other parts of the plant.


16. Which part of a bird’s body helps in flying?

a) Beak
b) Claws
c) Feathers
d) Tail

Answer: c) Feathers
Explanation: Feathers provide insulation and help birds fly by reducing air resistance.


17. What is the role of gills in fish?

a) To digest food
b) To breathe underwater
c) To store food
d) To protect from predators

Answer: b) To breathe underwater
Explanation: Gills extract oxygen from water, allowing fish to breathe underwater.


18. The exoskeleton of insects helps in:

a) Movement
b) Protecting internal organs
c) Breathing
d) Producing food

Answer: b) Protecting internal organs
Explanation: The exoskeleton provides protection and structural support to insects.


19. What is the function of the human skeleton?

a) Producing blood
b) Giving shape to the body
c) Protecting internal organs
d) All of the above

Answer: d) All of the above
Explanation: The skeleton supports the body, protects organs, and produces blood cells in the bone marrow.


20. How do snakes move?

a) Using legs
b) By flying
c) By crawling in a wave-like motion
d) By hopping

Answer: c) By crawling in a wave-like motion
Explanation: Snakes move by contracting and relaxing their muscles in a wave-like motion called serpentine locomotion.


21. What is the function of thorns in plants like cacti?

a) To store food
b) To protect from herbivores
c) To absorb sunlight
d) To help in pollination

Answer: b) To protect from herbivores
Explanation: Thorns prevent animals from eating the plant, helping in survival.


22. How do desert plants reduce water loss?

a) By having broad leaves
b) By having deep roots
c) By having small or no leaves
d) By storing water in flowers

Answer: c) By having small or no leaves
Explanation: Desert plants have modified leaves (spines) to reduce water loss through transpiration.


23. Which part of the human body helps in balancing?

a) Heart
b) Ears
c) Eyes
d) Hands

Answer: b) Ears
Explanation: The inner ear contains the vestibular system, which helps maintain balance.


24. How do earthworms breathe?

a) Through lungs
b) Through skin
c) Through gills
d) Through their mouth

Answer: b) Through skin
Explanation: Earthworms absorb oxygen through their moist skin, which allows respiration.


25. Which organ in the human body controls all functions?

a) Heart
b) Brain
c) Stomach
d) Lungs

Answer: b) Brain
Explanation: The brain controls body functions by sending and receiving signals through the nervous system.


26. What is the function of webbed feet in ducks?

a) Flying
b) Catching prey
c) Swimming
d) Climbing

Answer: c) Swimming
Explanation: Ducks have webbed feet, which help them swim efficiently in water.


27. Why do camels have long eyelashes?

a) To see far distances
b) To attract mates
c) To protect their eyes from sand
d) To store water

Answer: c) To protect their eyes from sand
Explanation: Camels’ long eyelashes help keep sand out of their eyes in the desert.


28. What is the function of whiskers in cats?

a) To help in vision
b) To detect movements and surroundings
c) To clean their face
d) To make sound

Answer: b) To detect movements and surroundings
Explanation: Whiskers are sensitive and help cats detect changes in their surroundings.


29. Which body part helps bats in navigation at night?

a) Eyes
b) Ears
c) Wings
d) Nose

Answer: b) Ears
Explanation: Bats use echolocation (sound waves) to detect obstacles and prey at night.


30. How do frogs breathe in water?

a) Through gills
b) Through lungs
c) Through skin
d) Through their mouth

Answer: c) Through skin
Explanation: Frogs absorb oxygen through their moist skin when underwater.


31. Which sense organ helps humans recognize different tastes?

a) Nose
b) Tongue
c) Ear
d) Eye

Answer: b) Tongue
Explanation: The tongue has taste buds that detect different tastes such as sweet, sour, salty, and bitter.


32. What is the main function of the nose?

a) To see objects
b) To help in breathing and smelling
c) To detect touch
d) To help in digestion

Answer: b) To help in breathing and smelling
Explanation: The nose helps in respiration and contains olfactory receptors for detecting smells.


33. Which part of the eye controls the amount of light entering?

a) Retina
b) Cornea
c) Iris
d) Optic nerve

Answer: c) Iris
Explanation: The iris controls the size of the pupil, regulating the amount of light entering the eye.


34. What is the function of the eardrum?

a) To produce sound
b) To detect light
c) To receive sound vibrations
d) To regulate balance

Answer: c) To receive sound vibrations
Explanation: The eardrum vibrates in response to sound waves, helping in hearing.


35. Which part of the skin is responsible for the sense of touch?

a) Epidermis
b) Dermis
c) Hair
d) Nails

Answer: b) Dermis
Explanation: The dermis contains nerve endings that help detect touch, pressure, and temperature.


36. What is the function of sharp claws in eagles?

a) To swim faster
b) To catch and hold prey
c) To clean feathers
d) To climb trees

Answer: b) To catch and hold prey
Explanation: Eagles have sharp, curved claws called talons that help them catch and grip prey tightly.


37. Which of the following animals uses its tail for balance while running?

a) Kangaroo
b) Cheetah
c) Elephant
d) Turtle

Answer: b) Cheetah
Explanation: A cheetah’s tail helps maintain balance and stability while running at high speeds.


38. How do dolphins communicate with each other?

a) By whistling and clicking sounds
b) By changing colors
c) By using their tails
d) By rubbing their bodies together

Answer: a) By whistling and clicking sounds
Explanation: Dolphins use echolocation and vocal sounds like whistles and clicks to communicate.


39. Why do snakes flick their tongues?

a) To catch prey
b) To smell the air
c) To make hissing sounds
d) To defend themselves

Answer: b) To smell the air
Explanation: Snakes use their tongues to collect scent particles from the air and detect their surroundings.


40. What is the main function of the web in spiders?

a) To store food
b) To catch prey
c) To protect their eggs
d) To make a home

Answer: b) To catch prey
Explanation: Spiders spin webs to trap insects, which they later consume.


41. What is the primary function of fins in fish?

a) Breathing
b) Swimming and maintaining balance
c) Catching prey
d) Protecting from predators

Answer: b) Swimming and maintaining balance
Explanation: Fins help fish move in water, change direction, and maintain stability.


42. Which of the following animals move by hopping?

a) Kangaroo
b) Snake
c) Elephant
d) Dolphin

Answer: a) Kangaroo
Explanation: Kangaroos use their strong hind legs to hop as their primary mode of movement.


43. How do snakes move without legs?

a) By rolling
b) By slithering in a wave-like motion
c) By hopping
d) By walking on small hidden legs

Answer: b) By slithering in a wave-like motion
Explanation: Snakes contract and relax their muscles in a wave-like manner to move forward.


44. Which body part helps birds in flight?

a) Beak
b) Wings
c) Tail
d) Claws

Answer: b) Wings
Explanation: Birds use their wings to lift off the ground and fly using air currents.


45. Which of these animals use their muscular foot for movement?

a) Snail
b) Frog
c) Tiger
d) Crow

Answer: a) Snail
Explanation: Snails move by contracting and expanding their muscular foot, secreting mucus to glide smoothly.


46. How do octopuses move in water?

a) By crawling on the sea floor
b) By jet propulsion
c) By swimming using fins
d) By floating without movement

Answer: b) By jet propulsion
Explanation: Octopuses expel water through a siphon, creating a force that propels them forward.


47. What is the function of a horse’s hooves?

a) To climb trees
b) To protect their feet while running
c) To catch prey
d) To help in swimming

Answer: b) To protect their feet while running
Explanation: Hooves are hard structures that protect the horse’s feet and help in fast movement.


48. Which animal moves using its tentacles?

a) Crab
b) Octopus
c) Snake
d) Rabbit

Answer: b) Octopus
Explanation: Octopuses use their tentacles to grasp objects, crawl, and pull themselves along surfaces.


49. How do bats differ from other flying animals?

a) They have feathers
b) They are the only mammals that can fly
c) They have no bones in their wings
d) They use their tails to fly

Answer: b) They are the only mammals that can fly
Explanation: Unlike birds, bats are mammals with modified forelimbs (wings) that allow them to fly.


50. Why do frogs have webbed feet?

a) To dig burrows
b) To grip trees
c) To swim efficiently
d) To catch insects

Answer: c) To swim efficiently
Explanation: Frogs have webbed feet that help them push against water while swimming.


51. What is the function of the stomach in humans?

a) Absorbing oxygen
b) Pumping blood
c) Digesting food
d) Filtering waste

Answer: c) Digesting food
Explanation: The stomach helps break down food using digestive juices and enzymes.


52. How do plants make their own food?

a) By absorbing nutrients from animals
b) By eating soil
c) Through photosynthesis
d) By storing water

Answer: c) Through photosynthesis
Explanation: Plants use sunlight, carbon dioxide, and water to prepare food through photosynthesis in their leaves.


53. What is the function of saliva in digestion?

a) Breaking down starch into sugar
b) Absorbing nutrients
c) Storing food
d) Producing acid

Answer: a) Breaking down starch into sugar
Explanation: Saliva contains enzymes like amylase that help in the digestion of starch.


54. Which organ is responsible for absorbing nutrients from food?

a) Stomach
b) Small intestine
c) Liver
d) Large intestine

Answer: b) Small intestine
Explanation: The small intestine absorbs nutrients from digested food into the bloodstream.


55. What is the main function of teeth?

a) To chew and break down food
b) To produce saliva
c) To taste food
d) To swallow food

Answer: a) To chew and break down food
Explanation: Teeth help in mechanical digestion by breaking food into smaller pieces.


56. Which part of a plant absorbs water and nutrients from the soil?

a) Leaves
b) Stems
c) Roots
d) Flowers

Answer: c) Roots
Explanation: Roots absorb water and essential nutrients from the soil, which are transported to other parts of the plant.


57. What is the function of the liver in digestion?

a) Producing bile
b) Absorbing food
c) Grinding food
d) Storing water

Answer: a) Producing bile
Explanation: The liver produces bile, which helps in breaking down fats during digestion.


58. How do cows digest grass efficiently?

a) By storing it in their lungs
b) By chewing it once
c) By regurgitating and chewing again (rumination)
d) By swallowing it whole

Answer: c) By regurgitating and chewing again (rumination)
Explanation: Cows are ruminants, meaning they chew cud to aid digestion in their multi-chambered stomachs.


59. What is the function of the large intestine?

a) Digesting proteins
b) Storing food
c) Absorbing water and forming feces
d) Breaking down starch

Answer: c) Absorbing water and forming feces
Explanation: The large intestine absorbs excess water and helps in forming solid waste for excretion.


60. Which type of plants trap and digest insects for nutrition?

a) Mango plants
b) Carnivorous plants
c) Cactus plants
d) Aquatic plants

Answer: b) Carnivorous plants
Explanation: Carnivorous plants like the Venus flytrap catch and digest insects to obtain nutrients like nitrogen.


61. Which organ is responsible for pumping blood in humans?

a) Lungs
b) Brain
c) Heart
d) Stomach

Answer: c) Heart
Explanation: The heart pumps oxygenated and deoxygenated blood throughout the body via blood vessels.


62. What is the primary function of blood in the human body?

a) Producing energy
b) Transporting oxygen and nutrients
c) Controlling movement
d) Filtering waste

Answer: b) Transporting oxygen and nutrients
Explanation: Blood carries oxygen and essential nutrients to different parts of the body and removes waste products.


63. What is the function of the lungs?

a) Pumping blood
b) Filtering waste
c) Producing digestive juices
d) Exchanging oxygen and carbon dioxide

Answer: d) Exchanging oxygen and carbon dioxide
Explanation: Lungs take in oxygen and remove carbon dioxide from the body through respiration.


64. Which gas do humans exhale during breathing?

a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen

Answer: b) Carbon dioxide
Explanation: Humans inhale oxygen and exhale carbon dioxide, which is a waste product of cellular respiration.


65. What is the function of veins in the circulatory system?

a) Carrying oxygen-rich blood
b) Carrying oxygen-poor blood back to the heart
c) Pumping blood
d) Storing nutrients

Answer: b) Carrying oxygen-poor blood back to the heart
Explanation: Veins transport deoxygenated blood back to the heart for oxygenation.


66. Which part of the plant helps in the exchange of gases?

a) Stem
b) Roots
c) Flowers
d) Stomata

Answer: d) Stomata
Explanation: Stomata are tiny openings on leaves that help in the exchange of oxygen and carbon dioxide during respiration and photosynthesis.


67. What is the function of red blood cells?

a) Fighting infections
b) Transporting oxygen
c) Digesting food
d) Controlling body temperature

Answer: b) Transporting oxygen
Explanation: Red blood cells contain hemoglobin, which binds with oxygen and carries it to different parts of the body.


68. How do insects breathe?

a) Through gills
b) Through lungs
c) Through spiracles and trachea
d) Through their skin

Answer: c) Through spiracles and trachea
Explanation: Insects have tiny holes called spiracles, connected to tracheal tubes, for breathing.


69. What is the function of white blood cells?

a) Carrying oxygen
b) Digesting food
c) Fighting infections
d) Producing energy

Answer: c) Fighting infections
Explanation: White blood cells are part of the immune system and help the body fight diseases.


70. Which organ in fish helps them extract oxygen from water?

a) Lungs
b) Gills
c) Fins
d) Scales

Answer: b) Gills
Explanation: Gills allow fish to absorb dissolved oxygen from water and release carbon dioxide.


71. What is the main function of the kidneys in humans?

a) Producing oxygen
b) Digesting food
c) Filtering waste from the blood
d) Pumping blood

Answer: c) Filtering waste from the blood
Explanation: Kidneys remove waste and excess water from the blood, forming urine.


72. Which organ stores urine before it is excreted from the body?

a) Kidneys
b) Liver
c) Bladder
d) Stomach

Answer: c) Bladder
Explanation: The bladder stores urine until it is expelled from the body.


73. How do plants remove excess water?

a) Through roots
b) Through flowers
c) Through stomata by transpiration
d) Through stems

Answer: c) Through stomata by transpiration
Explanation: Plants release excess water in the form of vapor through stomata, a process called transpiration.


74. Which organ in humans helps in detoxifying harmful substances?

a) Heart
b) Lungs
c) Liver
d) Stomach

Answer: c) Liver
Explanation: The liver processes toxins and harmful substances to make them less harmful before excretion.


75. Which organ removes carbon dioxide from the body?

a) Liver
b) Kidneys
c) Lungs
d) Heart

Answer: c) Lungs
Explanation: The lungs expel carbon dioxide, a waste gas produced during respiration.


76. What is the main waste product removed by human skin?

a) Oxygen
b) Sweat (water and salts)
c) Carbon dioxide
d) Urine

Answer: b) Sweat (water and salts)
Explanation: The skin releases sweat, which helps regulate body temperature and remove excess salts.


77. What is the process by which plants release oxygen as a waste product?

a) Photosynthesis
b) Respiration
c) Transpiration
d) Excretion

Answer: a) Photosynthesis
Explanation: During photosynthesis, plants produce oxygen as a byproduct and release it into the air.


78. In which form do birds excrete waste?

a) Liquid urine
b) Solid feces only
c) A white paste-like substance (uric acid)
d) Through sweating

Answer: c) A white paste-like substance (uric acid)
Explanation: Birds excrete nitrogenous waste as uric acid, which helps conserve water.


79. What is the main function of the excretory system?

a) Producing food
b) Removing waste from the body
c) Circulating oxygen
d) Controlling body movements

Answer: b) Removing waste from the body
Explanation: The excretory system helps eliminate waste substances like urine, sweat, and carbon dioxide.


80. How do aquatic animals like fish excrete nitrogenous waste?

a) Through lungs
b) Through gills in the form of ammonia
c) Through their fins
d) Through urine like mammals

Answer: b) Through gills in the form of ammonia
Explanation: Fish excrete nitrogenous waste as ammonia directly into the water through their gills.


81. What is the main function of seeds in plants?

a) To produce food
b) To store water
c) To help in reproduction
d) To attract pollinators

Answer: c) To help in reproduction
Explanation: Seeds contain the embryo of a new plant, allowing plants to reproduce and grow into new individuals.


82. Which part of a flower produces seeds?

a) Petals
b) Stigma
c) Ovary
d) Roots

Answer: c) Ovary
Explanation: The ovary contains ovules, which develop into seeds after fertilization.


83. How do animals reproduce?

a) Only by laying eggs
b) Only by giving birth to live young
c) By both laying eggs and giving birth
d) By photosynthesis

Answer: c) By both laying eggs and giving birth
Explanation: Some animals (like birds and reptiles) lay eggs, while others (like mammals) give birth to live young.


84. What is the function of a cocoon in the life cycle of a butterfly?

a) It helps in flying
b) It protects the pupa during metamorphosis
c) It is used for eating food
d) It helps in movement

Answer: b) It protects the pupa during metamorphosis
Explanation: The cocoon is a protective covering where the caterpillar transforms into an adult butterfly.


85. Which of the following animals reproduce by laying eggs?

a) Dog
b) Cow
c) Frog
d) Human

Answer: c) Frog
Explanation: Frogs reproduce by laying eggs, which hatch into tadpoles before growing into adult frogs.


86. How do flowering plants reproduce?

a) By shedding leaves
b) Through flowers and seeds
c) By absorbing nutrients from soil
d) Through stems only

Answer: b) Through flowers and seeds
Explanation: Flowers contain reproductive parts that produce seeds, which grow into new plants.


87. What is the function of pollen in plants?

a) To make food
b) To help in reproduction
c) To absorb water
d) To store energy

Answer: b) To help in reproduction
Explanation: Pollen contains male reproductive cells, which fertilize the ovules to form seeds.


88. Which body part in mammals is responsible for feeding their young ones?

a) Stomach
b) Mammary glands
c) Lungs
d) Tail

Answer: b) Mammary glands
Explanation: Mammals have mammary glands that produce milk to nourish their young.


89. Which of the following plants reproduce without seeds?

a) Mango
b) Apple
c) Potato
d) Sunflower

Answer: c) Potato
Explanation: Potatoes reproduce through underground stems called tubers instead of seeds.


90. What is the function of a bird’s nest?

a) To store food
b) To protect eggs and young ones
c) To attract other birds
d) To help in migration

Answer: b) To protect eggs and young ones
Explanation: Birds build nests to provide a safe place for laying eggs and raising their chicks.


91. What is the function of thigmotropism in plants?

a) Response to water
b) Response to gravity
c) Response to touch
d) Response to light

Answer: c) Response to touch
Explanation: Thigmotropism is the movement or growth of a plant in response to touch, as seen in climbing plants like pea vines.


92. Why do chameleons change their skin color?

a) To express emotions
b) To protect themselves from heat
c) To camouflage and communicate
d) To scare predators

Answer: c) To camouflage and communicate
Explanation: Chameleons change their skin color to blend with surroundings (camouflage) and communicate with other chameleons.


93. Which part of the body helps humans sense temperature changes?

a) Eyes
b) Skin
c) Ears
d) Hair

Answer: b) Skin
Explanation: Skin contains nerve endings that detect temperature changes and allow the body to respond accordingly.


94. What is the function of mimicry in animals?

a) To fly faster
b) To avoid predators by resembling another organism
c) To increase their size
d) To attract prey

Answer: b) To avoid predators by resembling another organism
Explanation: Some animals mimic the appearance of dangerous species to protect themselves from predators.


95. Why do sunflowers turn toward the sun?

a) To protect their seeds
b) To absorb more sunlight for photosynthesis
c) To attract bees
d) To store water

Answer: b) To absorb more sunlight for photosynthesis
Explanation: Sunflowers exhibit heliotropism, meaning they turn their flowers toward the sun to maximize light absorption.


96. How do nocturnal animals adapt to low-light environments?

a) By having larger eyes and better night vision
b) By changing color
c) By sleeping longer
d) By avoiding water

Answer: a) By having larger eyes and better night vision
Explanation: Nocturnal animals like owls have large eyes and enhanced vision to see better in the dark.


97. What do polar bears have to survive in cold regions?

a) Thick fur and fat layers
b) Feathers
c) Sharp claws for climbing trees
d) Webbed feet for swimming

Answer: a) Thick fur and fat layers
Explanation: Polar bears have thick fur and a fat layer (blubber) to keep them warm in freezing temperatures.


98. How do desert animals like camels survive without water for long periods?

a) By eating only dry food
b) By storing fat in their humps
c) By drinking salt water
d) By sweating a lot

Answer: b) By storing fat in their humps
Explanation: Camels store fat in their humps, which they convert into energy and water when needed.


99. What is the purpose of hibernation in animals?

a) To avoid predators
b) To conserve energy during extreme cold
c) To migrate to another place
d) To find more food

Answer: b) To conserve energy during extreme cold
Explanation: Hibernation helps animals survive cold weather by lowering their body temperature and reducing energy needs.


100. Why do leaves of the touch-me-not plant close when touched?

a) To conserve water
b) To scare predators
c) To protect themselves from harm
d) To attract insects

Answer: c) To protect themselves from harm
Explanation: The touch-me-not plant (Mimosa pudica) folds its leaves when touched as a defense mechanism against herbivores.


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