Phylum Mollusca Quiz - prelims

1. Characteristics of mollusc are ________.

• A. Mantle

• B. Mantle cavity

• C. Coelom

• D. All of these

2. The word molluscus comes from ________.

• A. Greek

• B. Latin

• C. Arabic

• D. None of these

3. Basic parts of mollusc are _______.

• 3

• 4

• 5

• 8

4. Radula is a unique feature of molluscs.

• yes

• no

5. Molluscs are composed of four basic components.

• Yes

• No

6. Which of the following statements is true about Unio?.

• (a) Unio has a one chambered heart

• (b) Unio has a two-chambered heart

• (c) Unio has a three-chambered heart

• (d) None of the above

7. Flat surface adopted for locomotion and usually contains mouth and other feeding structures are _______.

• A. Shell

• B. Foot

• C. Mantle

• D. Visceral mass

8. Molluscs are well-defined as hard bodied.

• Yes

• No

9. Rasping tongue like structure used for scraping is _________.

• A. Mantle

• B. Ctenidia

• C. Radula

• D. None of these

10. In open circulatory systems, the blood is always contained in vessels.

• Yes

• No