Class 11 Biology - Chapter Animal Kingdom NCERT Solutions | What are the modifications that are obse
Welcome to the NCERT Solutions for Class 11th Biology - Chapter Animal Kingdom. This page offers a step-by-step solution to the specific question from Exercise 1, Question 11: what are the modifications that are observed in bi....
Question 11
What are the modifications that are observed in birds that help them fly?
Answer
Birds have undergone many structural adaptations to suit their aerial life. Some of these adaptations are as follows.
(i) Streamlined body for rapid and smooth movement
(ii) Covering of feathers for insulation
(iii) Forelimbs modified into wings and hind limbs used for walking, perching, and swimming
(iv) Presence of pneumatic bones to reduce weight
(v) Presence of additional air sacs to supplement respiration
More Questions From Class 11 Biology - Chapter Animal Kingdom
- Q:- What is the difference between direct and indirect development?
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- Q:- How important is the presence of air bladder in Pisces?
- Q:- Distinguish between intracellular and extracellular digestion?
- Q:- What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?
- Q:- Prepare a list of some animals that are found parasitic on human beings.
- Q:- Match the following:
(a) Operculum (i) Ctenophora
(b) Parapodia (ii) Mollusca
(c) Scales (iii) Porifera
(d) Comb plates (iv) Reptilia
(e) Radula (v) Annelida
(f) Hairs (vi) Cyclostomata and Chondrichthyes
(g) Choanocytes (vii) Mammalia
(h) Gill slits (viii) Osteichthyes - Q:- Water vascular system is the characteristic of which group of the following:
(a) Porifera (b) Ctenophora (c) Echinodermata (d) Chordata - Q:- How useful is the study of the nature of body cavity and coelom in the classification of animals?
Popular Questions of Class 11 Biology
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Which of the following is not correct?
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(b) Schleiden and Schwann formulated the cell theory.
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5 Comment(s) on this Question
Alal uddin
2019-08-21 16:34:27
Thank you very much for given this questions answers
montu pegu
2019-08-08 17:45:34
Thanks
Xing ho re
2019-07-26 23:01:41
Thank you very much
Amaan
2019-04-02 18:57:40
Nice
Vishmitha Vijay
2018-07-28 17:20:22
Good😀 Thank you
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