Solution of Chapter 4. Animal Kingdom (Biology NCERT Book)

1 If you are given a specimen, what are the steps that you would follow to classify it?

2 How useful is the study of the nature of body cavity and coelom in the classification of animals?

3 Distinguish between intracellular and extracellular digestion?

4 What are the peculiar features that you find in parasitic platyhelminthes?

5 What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?

6 How important is the presence of air bladder in Pisces?

7 What are the modifications that are observed in birds that help them fly?

8 In which of the following is Segmentation in the body first observed:(a) Platyhelminthes (b) Aschelminthes (c) Annelida (d) Arthropoda.

9 Match the following:

Column I	Column II
(i) Operculum	(a) Ctenophora
(ii) Parapodia	(b) Mollusca
(iii) Scales	(c) Porifera
(iv) Comb plates	(d) Reptilia
(v) Radula	(e) Annelida
(vi) Hairs	(f) Cyclostomata and Chondrichthyes
(vii) Choanocytes	(g) Mammalia
(viii) Gill slits	(h) Osteichthyes

  

10 List some parasitic animals that are found on human beings.