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प्रश्न
Name the various phyla of non-chordates with two examples.
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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
Tick (✓) the appropriate answer:
The unicellular organism causing malaria
Give two examples of Flatworms:
Select the most appropriate answer.
Bones with large air cavities are present in
a. cnidarians.
b. fish.
c. annelids.
d. birds.
Select the most appropriate answer.
Milk in the body of mammals is produced by
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.
Reptiles have a scaly skin. They lay eggs with a hard shell and are warm-blooded animals.
Find the odd one out. Give reason.
snake, alligator, eel, turtle
Answer in detail.
You are asked to classify an animal in the correct group. The animal has a soft body and arm-like tentacles. You dissect the animal and find that it has an internal shell. Is the animal a cnidarian or a mollusc? Explain your answer.
On the basis of characteristics given below, name the phyla: Body cylindrical, segmented, coelomate.
______ is the unique characteristic feature of mammals.
