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प्रश्न
Name the various phyla of non-chordates with two examples.
उत्तर
The non- chordates are divided into nine phyla:
(i} Protozoa > Euglena, Amoeba
(ii) Porifera > Sycon, Euplectella
(iii), Coelenterata > Hydra, Physalia
(iv) Platyhelminthes > Fasciola, Dugesia
(v) Nemathelminthes > Ascaris, Wuchereria
(vi) Annelida > Nereis, Hirudinaria
(vii) Mollusca > Unio, Pila
(viii) Arthropoda > Palemon, Periplaneta
(ix) Echinodermata > Antedon, Echinus
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संबंधित प्रश्न
Fill in the blank.
Cnidarians have ................ symmetrical body.
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 |
Write a short answer.
Name the special organs of excretion in annelids?
Answer in detail.
Write a short note on annelids.
Answer in detail.
Write two characteristics of mammals
Answer in detail.
Why are mammals regarded as the most advanced animals?
Given below is an animal followed by three terms or features. Underline the term which does not match with the animal.
Monkey - External ear, sweat glands, lateral line.
Mention any one major similarity and one major difference in the following pairs of an animal:
Snakes and Earthworms
List the integumentary glands of mammals.
What are pneumatic bones?
