Q. No.
Which of the following is true for Shells of Mollusca?
1.
Secreted by outer surface of the Mantle
2.
Helps in protection
3.
Pearl is formed in this layer
4.
All of these
Which of the following is true about Apple snail.
1. It belongs to class Gastropoda
2. Body is covered by Calcareous shell
3. Torsion present
4. All of these
Which is Correct for Devil fish?
| 1. | Shell less animal |
| 2. | It belongs to class Cephalopoda |
| 3. | It has 8 arms |
| 4. | All of these |
Which of the following is true about Mollusca?
| 1. | Nephridia perform excretory functions |
| 2. | Gills perform respiratory functions |
| 3. | Most Mollusca have open circulatory system |
| 4. | All of these |
Which of the following is true about Radula?
1. Rasping organ
2. Tongue like structure
3. Used in feeding
4. All of these
Find the incorrect statement
| 1. | All Mollusks have shells |
| 2. | All mollusks are bilateral symmetrical |
| 3. | All mollusks are terrestrial |
| 4. | All of these |
Which of the following represents Mollusca?
1. Cuttlefish
2. Devil Fish
3. Star fish
4. More than one is correct
How many of the following is not the member of Mollusca?
Devil fish, Cuttle fish, Dog fish, Saw fish, Angel fish, Fighting fish, Flying fish, Star fish, Jelly fish, Silver fish
1. 3
2. 8
3. 2
4. 4
Which of the following is Mollusc?
1. Cuttle fish
2. Chiton
3. Cucumaria
4. More than one option is correct
Which of the following is correct about given Diagram?
| 1. | Closed Circulatory System |
| 2. | Foot has evolved into arms |
| 3. | Shells present |
| 4. | Both 1 and 2 |
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