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प्रश्न
What are the differences between animals belonging to the Aves group and those in the mammalia group?
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उत्तर
| Aves | Mammals | |
| 1. | Most birds have feathers and they possess a beak. | They do not have feathers and the beak is also absent. |
| 2. | They lay eggs. Hence, they are oviparous. | Some of them lay eggs and some give birth to young ones. Hence, they are both oviparous and viviparous. |
संबंधित प्रश्न
Match the following:
| Column I | Column II | ||
| (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 |
Main characteristics of Nematoda:
Define the term hermaphrodite. Give two examples.
Write down four main characters of chordates.
Describe some flight adaptations of the birds.
Distinguish between Nonchordata and Chordata.
Distinguish between polyp and medusa.
Explain the general charaters of phylum Mollusca. Give one example of following classes of Mollusca;
(i) Gastropoda;
(ii) Pelecypoda;
(iii) Cephalopoda.
Name three animals (belonging to different classes) which breathe by means of lungs but have no external ears (pinnae).
TYRANNOSAURUS
(One of the extinct animals which lived on the Earth about 100,000,000 years ago) Tyrannosaurus was about six meters long and it preyed upon other animals.
What do you think about its classification-was it an amphibian, a reptile or a mammal?
Can you call it a relative of Kangaroo? Yes/No. Give reason
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Name any two animals which possess compound eyes.
Write name of any poikilothermic animal.
Give two examples of each of the following: Nemathelminthes
Fill in the blanks:
Ascaris is the example of phylum ______.
Fill in the blanks:
Dog fish belongs to phylum ______.
Choose the correct answer: Binomial Nomenclature was proposed by
What is binomial nomenclature?
Write the binomial name of
- Human being
- Paddy
Select the INCORRECT statement from the following.
