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CBSE 11th Standard Biology Subject Animal Kingdom HOT Questions 2 Marks Questions 2021

Published on: 29/05/2021

QB365 Provides the HOT Question Papers for Class 11 Biology, and also provide the detail solution for each and every HOT Questions. HOT Questions will help to get more idea about question pattern in every exams and also will help to get more marks in Exams

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Std: 11th Standard CBSE - Biology

chapter: - HOT Questions

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Questions:

Generic 2

5 x 2 = 10

Endoparasites are found inside the host body. Mention the special structures possessed by these to enable them to survive in those conditions.

Justify 'snakes have a strong sense of smell'.

How will you differentiate between the heart of an amphibian and a reptile?

Sponges are filter feeders.How does it take place?

In which groups animals, closed circulatory system is found? Why blood flows with faster speed and high pressure in these animals?

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Answers Key:

Generic 2

5 x 2 = 10

Hooks and suckers, dorsoventrally flattened body, high reproductive potential, indirect development

Snakes have strong sense of smell because, their forked tongue is frequently linked to pick up smell bearing molecules from the air or ground and are inserted with special sense organs called Jacobson's organs in the roof of the mouth to identify the smell

In both amphibians and reptiles, heart is three-chambered with two auricles and one ventricle.Ventricle is unpartitioned in the amphibians, while it is incompletely partitioned in the reptiles

The tiny food particles are strained out of the water current by the choanocytes which pass them on to the other cells.These cells ingest food particles and digestion is intracellular.Planktons are the important food source for the filter feeders such as sponges.

Closed circulatory is found in most annelids and all vertebrates. In these groups blood flows at faster speed and high pressure due to force provided by the rythmic contraction and relaxation of heart muscles.