Class 11 Biology - Chapter Animal Kingdom NCERT Solutions | What is the difference between direct an
What is the difference between direct and indirect development?
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Direct development |
Indirect development |
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It is a type of development in which an embryo develops into a mature individual without involving a larval stage. |
1. |
It is a type of development that involves a sexually-immature larval stage, having different food requirements than adults. |
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Metamorphosis is absent. |
2. |
Metamorphosis involving development of larva to a sexually-mature adult is present. |
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It occurs in fishes, reptiles, birds, and mammals. |
3. |
It occurs in most of the invertebrates and amphibians. |
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More Questions From Class 11 Biology - Chapter Animal Kingdom
- Q:- “All vertebrates are chordates but all chordates are not vertebrates”. Justify the statement.
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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?
- Q:- What are the modifications that are observed in birds that help them fly?
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.
(c) Virchow explained that cells are formed from pre-existing cells.
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