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प्रश्न
Answer in detail.
Write a short note on annelids.
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उत्तर
Annelids are invertebrates which include segmented worms. They are found in moist soil and pond water. They have a soft, cylindrical, and bilaterally symmetrical body. Their body surface is marked into ring-like compartments called segments that help in movement. They have a special organ of excretion called nephridia.
Examples: Leech and earthworm.
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संबंधित प्रश्न
Select the most appropriate answer.
Organs of excretion in annelids are
Select the most appropriate answer.
Bones with large air cavities are present in
a. cnidarians.
b. fish.
c. annelids.
d. birds.
Find the odd one out. Give reason.
ant, cockroach, spider, dragonfly
Answer in detail.
List two notable characteristic of birds which is not found in any other group of animals?
Mention any one major similarity and one major difference in the following pairs of an animal:
Insects and Birds
Mention any one major similarity and one major difference in the following pairs of an animal:
Bat and Pigeon
Which group of animals have following characteristics: Body segmented, jointed appendages and compound eyes.
Mention two special features of mammals.
What are pneumatic bones?
Write a note on mammals.
