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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
Fill in the blank.
................. is an example of a crustacean.
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.
Arthropods have a soft, outer covering called endoskeleton.
Answer in detail.
Name the different classes of arthropods. Write one characteristic feature of each class.
Answer in detail.
Write two characteristics of birds.
Answer in detail.
How are the bones of birds different from those of other vertebrates?
On the basis of characteristics given below, name the phyla: Unicellular, microscopic animals.
Name the phyla to which following animal belongs: Starfish
Bones with air cavities ate seen in ______.
______ formed during embryonic development.
