ANAND CLASSES Study Material and Notes to explore important MCQs on types of Heterotrophic Nutrition, including Saprotrophic, Parasitic, and Holozoic nutrition, for Class 10 Science Biology. Enhance your understanding with these multiple-choice questions designed for CBSE exam preparation.
MCQs-Multiple-Choice Questions
- Which of the following is NOT a mode of heterotrophic nutrition?
- A) Parasitic
- B) Saprophytic
- C) Autotrophic
- D) Holozoic
- Answer: C) Autotrophic
- Heterotrophic nutrition is characterized by organisms that:
- A) Produce their own food
- B) Depend on other organisms for food
- C) Utilize sunlight for energy
- D) Convert inorganic substances into organic ones
- Answer: B) Depend on other organisms for food
- Which of the following organisms exhibit holozoic nutrition?
- A) Fungi
- B) Bacteria
- C) Humans
- D) Algae
- Answer: C) Humans
- In holozoic nutrition, the sequence of processes is:
- A) Ingestion → Digestion → Absorption → Assimilation → Egestion
- B) Absorption → Digestion → Ingestion → Egestion → Assimilation
- C) Digestion → Ingestion → Absorption → Egestion → Assimilation
- D) Ingestion → Absorption → Digestion → Assimilation → Egestion
- Answer: A) Ingestion → Digestion → Absorption → Assimilation → Egestion
- Which mode of nutrition involves organisms feeding on dead and decaying matter?
- A) Parasitic
- B) Saprotrophic
- C) Holozoic
- D) Autotrophic
- Answer: B) Saprotrophic
- Saprotrophic organisms obtain nutrients by:
- A) Engulfing solid food particles
- B) Absorbing dissolved organic substances
- C) Photosynthesis
- D) Parasitizing other organisms
- Answer: B) Absorbing dissolved organic substances
- Which of the following is an example of a saprotrophic organism?
- A) Amoeba
- B) Mushroom
- C) Tapeworm
- D) Green plant
- Answer: B) Mushroom
- Parasitic nutrition involves:
- A) Organisms living independently
- B) Organisms feeding on dead matter
- C) One organism benefiting at the expense of another
- D) Mutual benefit between two organisms
- Answer: C) One organism benefiting at the expense of another
- An example of an endoparasite is:
- A) Louse
- B) Leech
- C) Tapeworm
- D) Mistletoe
- Answer: C) Tapeworm
- Which of the following statements about parasites is true?
- A) They always kill their host
- B) They benefit while harming their host
- C) They provide nutrients to their host
- D) They live independently of other organisms
- Answer: B) They benefit while harming their host
- Holozoic nutrition is commonly found in:
- A) Fungi
- B) Bacteria
- C) Animals
- D) Plants
- Answer: C) Animals
- Which process is not part of holozoic nutrition?
- A) Ingestion
- B) Photosynthesis
- C) Digestion
- D) Egestion
- Answer: B) Photosynthesis
- In saprotrophic nutrition, enzymes are secreted:
- A) Internally
- B) Externally
- C) Into the bloodstream
- D) Into specialized digestive organs
- Answer: B) Externally
- Which of the following is a characteristic of saprotrophs?
- A) They perform photosynthesis
- B) They decompose organic material
- C) They live inside a host organism
- D) They ingest food particles
- Answer: B) They decompose organic material
- Parasitic plants obtain nutrients by:
- A) Photosynthesis
- B) Absorbing nutrients from their host
- C) Decomposing organic matter
- D) Fixing atmospheric nitrogen
- Answer: B) Absorbing nutrients from their host
- Which of the following is an ectoparasite?
- A) Tapeworm
- B) Plasmodium
- C) Tick
- D) Liver fluke
- Answer: C) Tick
- The main difference between saprotrophs and parasites is:
- A) Saprotrophs feed on living hosts; parasites feed on dead matter
- B) Saprotrophs perform photosynthesis; parasites do not
- C) Saprotrophs feed on dead matter; parasites feed on living hosts
- D) Saprotrophs are always unicellular; parasites are multicellular
- Answer: C) Saprotrophs feed on dead matter; parasites feed on living hosts
- Which of the following organisms exhibits parasitic nutrition?
- A) Yeast
- B) Amoeba
- C) Plasmodium
- D) Euglena
- Answer: C) Plasmodium
- In holozoic nutrition, absorption primarily occurs in the:
- A) Mouth
- B) Stomach
- C) Small intestine
- D) Large intestine
- Answer: C) Small intestine
- Which of the following is true about saprotrophic nutrition?
- A) It involves ingestion of solid food particles
- B) It requires a host organism
- C) It involves extracellular digestion
- D) It is a type of autotrophic nutrition
- Answer: C) It involves extracellular digestion
- Which of the following is an example of a holozoic organism?
- A) Mushroom
- B) Amoeba
- C) Mistletoe
- D) Bread mold
- Answer: B) Amoeba
- Parasitic nutrition differs from saprotrophic nutrition in that parasites:
- A) Feed on dead organic matter
- B) Live on or in a living host
- C) Perform photosynthesis
- D) Decompose organic material externally
- Answer: B) Live on or in a living host
- Which of the following is a characteristic of holozoic nutrition?
- A) Absorption of nutrients from a host
- B) External digestion of organic matter
- C) Ingestion of complex organic substances
- D) Photosynthesis
- Answer : C) Ingestion of complex organic substances
- Which of the following is NOT an example of parasitic nutrition?
- A) Tapeworm in human intestines
- B) Mistletoe on trees
- C) Bacteria decomposing dead plants
- D) Plasmodium in the human body
- Answer: C) Bacteria decomposing dead plants
- Which type of nutrition involves consuming complex organic food, digesting it internally, and absorbing nutrients?
- A) Saprotrophic
- B) Holozoic
- C) Parasitic
- D) Autotrophic
- Answer: B) Holozoic
- What is the major difference between parasitic and saprotrophic nutrition?
- A) Parasites live on living hosts, while saprotrophs feed on dead matter
- B) Parasites perform photosynthesis, while saprotrophs do not
- C) Saprotrophs ingest food, while parasites do not
- D) Parasites are only found in plants, while saprotrophs are in animals
- Answer: A) Parasites live on living hosts, while saprotrophs feed on dead matter
- Which of the following is an example of a parasite in humans?
- A) Amoeba
- B) Plasmodium
- C) Yeast
- D) Mushroom
- Answer: B) Plasmodium
- The primary function of saprotrophs in an ecosystem is:
- A) Producing oxygen
- B) Decomposing organic matter
- C) Parasitizing living organisms
- D) Performing photosynthesis
- Answer: B) Decomposing organic matter
- Which of the following is an ectoparasite?
- A) Tapeworm
- B) Tick
- C) Plasmodium
- D) Amoeba
- Answer: B) Tick
- Which of these organisms uses extracellular digestion?
- A) Amoeba
- B) Fungi
- C) Earthworm
- D) Hydra
- Answer: B) Fungi
- What is the role of decomposers in nature?
- A) To photosynthesize and produce oxygen
- B) To consume living organisms for food
- C) To break down dead and decaying organic matter
- D) To infect hosts and spread diseases
- Answer: C) To break down dead and decaying organic matter
- Which of the following processes occurs in holozoic nutrition but not in saprotrophic nutrition?
- A) Ingestion
- B) Absorption
- C) Digestion
- D) Excretion
- Answer: A) Ingestion
- Which of the following best describes ectoparasites?
- A) They live inside the host’s body
- B) They cause harm while benefiting from the host
- C) They perform photosynthesis
- D) They help the host obtain nutrients
- Answer: B) They cause harm while benefiting from the host
- Holozoic organisms include:
- A) Fungi and bacteria
- B) Plants and algae
- C) Humans and most animals
- D) Viruses and protozoa
- Answer: C) Humans and most animals
- The function of digestive enzymes in saprotrophic nutrition is to:
- A) Produce energy from sunlight
- B) Break down complex organic matter externally
- C) Provide immunity to the organism
- D) Store nutrients for later use
- Answer: B) Break down complex organic matter externally
- Which of the following organisms follows holozoic nutrition?
- A) Paramecium
- B) Yeast
- C) Mistletoe
- D) Bacteria
- Answer: A) Paramecium
- Parasites derive nutrients from their host and:
- A) Improve the host’s health
- B) May eventually kill the host
- C) Perform photosynthesis for the host
- D) Break down dead organic matter
- Answer: B) May eventually kill the host
- Which of the following is NOT a characteristic of saprotrophic nutrition?
- A) Enzymatic breakdown of food
- B) Dependence on dead organic material
- C) Absorption of nutrients after external digestion
- D) Direct ingestion of solid food
- Answer: D) Direct ingestion of solid food
- Which organism is known for parasitic nutrition?
- A) Earthworm
- B) Tapeworm
- C) Yeast
- D) Algae
- Answer: B) Tapeworm
- Holozoic nutrition is mainly found in:
- A) Fungi
- B) Bacteria
- C) Protozoans and animals
- D) Viruses
- Answer: C) Protozoans and animals
- In saprotrophic nutrition, digestion occurs:
- A) Inside the organism
- B) Inside specialized cells
- C) Outside the organism
- D) Inside mitochondria
- Answer: C) Outside the organism
- Which of the following is a decomposer?
- A) Grasshopper
- B) Snake
- C) Fungus
- D) Elephant
- Answer: C) Fungus
- Which process is essential for holozoic nutrition but absent in saprotrophic nutrition?
- A) Enzyme secretion
- B) Ingestion
- C) Absorption
- D) Nutrient breakdown
- Answer: B) Ingestion
- Which of the following is an obligate parasite?
- A) Mushroom
- B) Yeast
- C) Plasmodium
- D) Earthworm
- Answer: C) Plasmodium
- Why are parasites harmful to their hosts?
- A) They consume the host’s food
- B) They perform photosynthesis
- C) They provide essential nutrients to the host
- D) They produce oxygen in the host’s body
- Answer: A) They consume the host’s food
- What is an example of a facultative parasite?
- A) Tapeworm
- B) Plasmodium
- C) Mistletoe
- D) Bacteria that can live independently or as parasites
- Answer: D) Bacteria that can live independently or as parasites
- Which of the following is NOT a holozoic organism?
- A) Amoeba
- B) Paramecium
- C) Fungus
- D) Humans
- Answer: C) Fungus
- Which part of the digestive system is responsible for nutrient absorption in holozoic organisms?
- A) Stomach
- B) Large intestine
- C) Small intestine
- D) Esophagus
- Answer: C) Small intestine
- Which of the following organisms shows a combination of autotrophic and heterotrophic nutrition?
- A) Euglena
- B) Amoeba
- C) Plasmodium
- D) Fungi
- Answer: A) Euglena
- Parasitic plants like mistletoe absorb nutrients from:
- A) Soil directly
- B) Their host plants
- C) Dead organic matter
- D) Sunlight
- Answer: B) Their host plants
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