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11. |
Both the gills and the lung are present in which of these |
A. |
Pila |
B. |
Lmellidens |
C. |
Star-fish |
D. |
None of these |
Answer: Option A
Explanation:
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12. |
Ventral nerve cord is absent in which of these: |
A. |
Cockroach and other insects |
B. |
Earthworm and other annelids |
C. |
Pila and other molluscs |
D. |
None of these |
Answer: Option C
Explanation:
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13. |
Which of these do not have a ventral nerve cord: |
A. |
Molluscs only |
B. |
Annelids only |
C. |
Arthropods only |
D. |
Molluscs and echinoderms |
Answer: Option D
Explanation:
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14. |
Which of these animals lacks a ventral nerve cord: |
A. |
Pila |
B. |
Earthworm |
C. |
Leech |
D. |
Cockroach |
Answer: Option A
Explanation:
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15. |
Planktonic development occurs in: |
A. |
Pila |
B. |
Earthworm |
C. |
Cockroach |
D. |
House-fly |
Answer: Option A
Explanation:
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16. |
Trochophore larva is found in: |
A. |
Earthworm |
B. |
Mosquito |
C. |
Pila |
D. |
None of these |
Answer: Option D
Explanation:
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17. |
Larva of Lamellidens is called: |
A. |
Trochophore |
B. |
Glochidium |
C. |
Bipinnaria |
D. |
Amphiblasula |
Answer: Option B
Explanation:
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18. |
Which alrva is ectoparasite on gills of fresh water fish: |
A. |
Glochidium |
B. |
Trochophore |
C. |
Valiger |
D. |
None of these |
Answer: Option A
Explanation:
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19. |
Osphradium is a sense organ found in: |
A. |
Pila |
B. |
House-fly |
C. |
Mosquito |
D. |
None of these |
Answer: Option A
Explanation:
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20. |
An osphradium is: |
A. |
Chemoreceptor |
B. |
Tactile |
C. |
Photosensory |
D. |
Statoreceptor |
Answer: Option A
Explanation:
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