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प्रश्न
Fill in the blank.
.................. do not have a backbone, while vertebrates have it.
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उत्तर
Invertebrates do not have a backbone, while vertebrates have it.
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संबंधित प्रश्न
Name one example of the animal which shows the following characteristics:
Has a flattened ribbon-like body:
Fill in the blank.
..................... and liver fluke live in the intestines of human beings and cattle.
Fill in the blank.
Annelids have special organs of excretion called ..............
Select the most appropriate answer.
Organs of excretion in annelids are
Select the most appropriate answer.
The body temperature of warm-blooded animals
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
aves and mammals
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.
Bones with air cavities ate seen in ______.
Why is the crocodile unique among reptiles?
