Advertisements
Advertisements
प्रश्न
Write one difference between the following pair:
Porifera and Coelenterata.
Advertisements
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. |
APPEARS IN
संबंधित प्रश्न
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.
A tapeworm is a flatworm that lives in the human intestine.
Write a short answer.
Give two examples of Platyhelminthes.
Write a short answer.
Name the special organs of excretion in annelids?
Write a short answer.
How are the bones of birds different from those of other vertebrates?
Answer in detail.
How do fish exchange gases?
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Fish - Gills, paired fins, ear drum
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Whale - Gills, mammary glands, fat under the skin
How do chordates differ from non-chordates?
Write zoological names of roundworm.
