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प्रश्न
Main characteristics of Nematoda:
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उत्तर
Main characteristics of Nematoda:
(i) They are bilaterally symmetrical, triploblastic, pseudocoelomate and unsegmented animals.
(ii) They have a cylindrical or flattened, worm-like body.
(iii) Sexes are separate.
(iv) Body is covered with a tough, resistant cuticle.
Examples: Ascaris (round worm) and Wuchereria bancrofti (filarial worm).
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संबंधित प्रश्न
Explain how animals in Vertebrata are classified into further subgroups.
Match the animals given under column A with their respective classification group given under column B
| Column A | Column B | ||
| 1 | Sponge | a | Amphibia |
| 2 | Snail | b | Reptilia |
| 3 | Butterfly | c | Echinodermata |
| 4 | Toad | d | Mollusca |
| 5 | Lizard | e | Arthropoda |
| 6 | Starfish | f | Porifera |
Write down four general characters of phylum Arthropoda. Give two examples.
What are adaptations in fishes due to which they are aquatic?
What are differences between the following :
(a) Cartilaginous fishes and bony fishes ;
(b) Amphibia and Reptilia ;
(c) Aves and mammals.
Write short note on protochordates.
How do animals of Porifera differ from animals of Cnidaria?
Explain the general charaters of phylum Mollusca. Give one example of following classes of Mollusca;
(i) Gastropoda;
(ii) Pelecypoda;
(iii) Cephalopoda.
Rewrite the following scientific names correctly.
ficus religiosa (peepal), zea Mays (maize) and Bombyx Mori (silk moth).
What are the group names of the following categories of animals?
Animals with three pairs of legs ___________
Give any one difference between the following :
Flatworm and Roundworm
Name three animals (belonging to different classes) which breathe by means of lungs but have no external ears (pinnae).
Write two main characters of the following animal and name the phylum it belongs to: Whale
Give two examples of each of the following: Echinodermata
Fill in the blanks:
Ascaris is the example of phylum ______.
Fill in the blanks:
Bath sponge belongs to phylum ______.
Fill in the blanks:
Dog fish belongs to phylum ______.
Choose the correct answer: The animal of phylum mollusca is
Choose the correct answer: Protista is the link between
