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प्रश्न
Write one difference between the following pair:
Porifera and Coelenterata.
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उत्तर
| Porifera | Coelenterata | ||
| 1 | Body is porous i. e. bears many tiny pores to draw water into the body cavity. | 1 | Sac-like body with only one opening i.e. mouth. |
| 2 | e.g. Sponge | 2 | e.g. Jellyfish, hydra, sea anemone. |
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संबंधित प्रश्न
Fill in the blank.
Fishes obtain oxygen from water through ......................
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 |
State if the following statement is true or false. Correct the statement if it is false.
Reptiles have a scaly skin. They lay eggs with a hard shell and are warm-blooded animals.
Give reason for the following.
What happens to the body temperature of a fish when the temperature of water drops?
Write two main characters of the following animal and name the phylum it belongs to: Cockroach
Bones with air cavities ate seen in ______.
Animals that possess notochord are called ______.
In mammals, the testis is enclosed by ______.
Mammals have four-chambered Hearts.
List the integumentary glands of mammals.
