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प्रश्न
Answer in detail.
How do warm-blooded and cold-blooded animals differ?
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उत्तर
Warm-blooded animals are those animals whose body temperature remains the same and is not affected by the temperature of their surroundings, e.g. Birds, Humans.
Cold-blooded animals change their body temperature with the change in the temperature of their surroundings, e.g. Fish, reptile
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संबंधित प्रश्न
Name one example of the animal which shows the following characteristics:
Has a flattened ribbon-like body:
Select the most appropriate answer.
Bones with large air cavities are present in
a. cnidarians.
b. fish.
c. annelids.
d. birds.
Select the most appropriate answer.
Milk in the body of mammals is produced by
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 |
Differentiate between
radially symmetrical and bilaterally symmetrical body
Answer in detail.
Write a short note on annelids.
Answer in detail.
Write two characteristics of the reptiles.
Write zoological names of earthworm.
On the basis of characteristics given below, name the phyla: Soft bodies, muscular foot, calcareous shell and presence of mantle.
Mention two special features of mammals.
