Advertisements
Advertisements
प्रश्न
Give a reason for the following.
Why do adult amphibians tend to stay near water?
Advertisements
उत्तर
Adult amphibians tend to stay near water because they have to return to water to reproduce and they always lay their eggs in water, e.g. frog.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
Invertebrates with jointed legs belong to ....................
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.
Find the odd one out. Give reason.
snail, oyster, earthworm, octopus
Answer in detail.
Write a short note on annelids.
Answer in detail.
How do warm-blooded and cold-blooded animals differ?
Classify the given animals into different categories indicated.
Jellyfish, liver fluke, pinworm, Ascaris, tapeworm, Hydra, sea anemone into cnidarians, Platyhelminthes, and Nemathelminthes.
Name the phyla to which following animal belongs: Hydra
The notochord extends throughout the entire length of the body is ______.
Animals that possess notochord are called ______.
