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प्रश्न
What do you mean by the term triploblastic animals? Give two example.
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उत्तर
Triploblastic animals are those which have three germ layers in the embryo. The outer layer is called ectoderm, the inner layer is called endoderm and the middle layer is called mesoderm.
Examples: Animals of phylum Ctenophora, such as comb jelly and Venus's girdle.
Animals of phylum Platyhelmithes, such as Planaria and blood fluke.
APPEARS IN
संबंधित प्रश्न
Match the following:
| Column I | Column II | ||
| (a) | Operculum | (i) | Ctenophora |
| (b) | Parapodia | (ii) | Mollusca |
| (c) | Scales | (iii) | Porifera |
| (d) | Comb plates | (iv) | Reptilia |
| (e) | Radula | (v) | Annelida |
| (f) | Hairs | (vi) | Cyclostomata and Chondrichthyes |
| (g) | Choanocytes | (vii) | Mammalia |
| (h) | Gill slits | (viii) | Osteichthyes |
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 main characters of Platyhelminthes. Give two examples.
What do you mean by the term coelomate animals? Give two examples.
What are differences between the following :
(a) Cartilaginous fishes and bony fishes ;
(b) Amphibia and Reptilia ;
(c) Aves and mammals.
Distinguish between polyp and medusa.
Write down four general characters of cnidarians (coelenterates). Give two examples.
Rewrite the following scientific names correctly.
ficus religiosa (peepal), zea Mays (maize) and Bombyx Mori (silk moth).
Give any one difference between the following :
Flatworm and Roundworm
Match the names of animal groups in Column I with the names of animals in column II.
|
Column I (Group) |
Column II (Animals) |
|
Annelida |
Pigeon |
|
Porifera |
Snake |
|
Mollusca |
Earthworm |
|
Reptilia |
Sponge |
|
Amphibia |
Octopus |
|
Pisces |
Trout |
|
Mammal |
Rabbit |
Which names are left out that do not match and why?
TYRANNOSAURUS
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What do you think about its classification-was it an amphibian, a reptile or a mammal?
Can you call it a relative of Kangaroo? Yes/No. Give reason
Give the name of two animals that belong to phylum echinodermata.
Write the name of a mammal who lives in water.
Write name of any poikilothermic animal.
Give two examples of each of the following: Nemathelminthes
Fill in the blanks:
The excretory organs of platyhelminthes are ______.
Fill in the blanks:
Nephridia are the excretory organs of ______.
Choose the correct answer: The animal of phylum mollusca is
True (or) False. If false write the correct answer.
True nucleus is seen in prokaryotic cell.
Kingdom Animalia is characterized by
