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प्रश्न
Differentiate between
aves and mammals
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उत्तर
| aves | Mammals | ||
| 1 | Their body is covered with feathers. | 1 | They have hair on their body. |
| 2 | Forelimbs are modified into wings to fly. | 2 | Forelimbs exist as hand, paw, or hooves. |
| 3 | They have a horny beak with no teeth. | 3 | They have a mouth with teeth. |
| 4 | They lay eggs. with no teeth. | 4 | They give birth to young ones. |
| 5 | They don’t have mammary glands. | 5 | They have mammary glands i.e. they suckle their babies. |
| 6 | They have hollow bones. | 6 | They have solid bones. |
| 7 | e.g. Crow, parrot. | 7 | e.g. Humans, dogs. |
संबंधित प्रश्न
Give two examples of Arthropods:
Fill in the blank.
Cnidarians have ................ symmetrical body.
Select the most appropriate answer.
Milk in the body of mammals is produced by
Fill in the blank.
The animals without a backbone whose body is soft and often covered by a hard shell are .................
Fill in the blank.
The backbone of vertebrates is made up of a number of small bones called .....................
Match the following.
| Group | Characteristics | ||
| 1. | Molluscs | a. | Feed milk to young ones, warm-blooded |
| 2. | Spongers | b. | bag-like body with tentacles around the opening |
| 3. | Flatworms | c. | fins, gills and cold-blooded |
| 4. | mammals | d. | body with large opening and many small pores all over |
| 5. | Fish | e. | jointed legs, exoskeleton |
| 6. | cnidarians | f. | have only one opening |
| 7. | arthropods | g. | hard shell, soft body |
| h. | cylindrical, unsegmented body with mouth at one end and anus at the posterior end |
Find the odd one out. Give reason.
frog, shark, seahorse, carp
Find the odd one out. Give reason.
snake, alligator, eel, turtle
Write a short answer.
How are the bones of birds different from those of other vertebrates?
Answer in detail.
Write two characteristics of mammals
Answer in detail.
List four characteristics of reptiles.
Answer in detail.
How do fish exchange gases?
Give any one difference between protozoa and Metazoa.
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Monkey - External ear, sweat glands, lateral line.
Mention any one major similarity and one major difference in the following pairs of an animal:
Bat and Pigeon
Mention any one major similarity and one major difference in the following pairs of an animal:
Cuttlefish and Dogfish
Mention any one major similarity and one major difference in the following pairs of an animal:
Wall lizard and Frog
Match items in Column A with the appropriate items in Column B
| Column A | Column B |
| Cobra | Protozoa |
| Peacock | Amphibia |
| Earthworm | Annelida |
| Euglena | Reptilia |
| Frog | Porifera |
| Spongilla | Aves |
Which one is the most striking or (common) character of the vertebrates?
Bones with air cavities ate seen in ______.
