Question

Consider the following statements.
A. Almost all animals are either herbivores or carnivores.
B. Human beings, rats, crows, etc. are omnivorous.
C. Holozoic mode of nutrition is seen in Amoeba and Paramecium.
D. Lysosome involved in the digestion of engulfed food is seen in the contractile vacuole of Amoeba.
Which of the above statements are incorrect?
A. A, C and D
B. A, B and D
C. A and D
D. B and D

Answer 1

Hint: Organisms can make their food or can depend on others for their food requirement. Autotrophs are the ones who make their food while the heterotrophs will depend on others for their food. Every organism has a different kind of eating pattern. The prokaryotes and eukaryotes have different mechanisms for the digestion of food.

Complete answer: Based on the mode of nutrition, the types are herbivores – they eat only plant and plant products.
Carnivores – they eat the flesh of other animals.
Omnivores - they can eat both plants and flesh.
A. Almost all animals are either herbivores or carnivores: There are three categories based on nutrition. They are herbivores, carnivores and omnivores. Thus the major animals fall under omnivores.
B. Human beings, rats, crows, etc. are omnivorous: Omnivores eat both meat and plants. So the statement is correct as humans, crow, rats all eat meat and plant obtained food.
C. Holozoic mode of nutrition is seen in Amoeba and ParameciumAmoeba, humans, Paramecium, etc.
D. Lysosome involved in the digestion of engulfed food is seen in the contractile vacuole of Amoeba: Contractile vacuoles function to expel the excess water from the body. In Amoeba, the food is consumed in the food vacuole. The lysozyme will bind with vacuole to break the food into simpler particles.
So, the answer is option C: A and D

Note: The holozoic mode of nutrition has various steps like ingestion that is engulfing food. Digestion – the breakdown of food. Absorption - the nutrients from food are absorbed by the body. Assimilation is the binding of all the unwanted materials obtained from food and finally occurs the egestion that is thrown out of the waste material from the body.