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प्रश्न
Select the most appropriate answer.
Organs of excretion in annelids are
विकल्प
gills
nephridia
suckers
lungs
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उत्तर
nephridia
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संबंधित प्रश्न
Give two examples of Segmented worms:
Give names of two animals which are found as parasites inside the human intestine.
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.................. do not have a backbone, while vertebrates have it.
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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 |
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Reptiles have a scaly skin. They lay eggs with a hard shell and are warm-blooded animals.
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What is the name of the bone which is filled with air?
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