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| 21. |
Number of wings in house-fly is: |
| A. |
One pairs only |
B. |
Two pairs |
| C. |
Single |
D. |
None of these |
Answer: Option A
Explanation:
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| 22. |
Halters in house-fly are modification of: |
| A. |
Fore wings |
B. |
Hind wings |
| C. |
First legs |
D. |
Maxillae |
Answer: Option B
Explanation:
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| 23. |
Veins are absent in: |
| A. |
Cockroach |
B. |
Earthworm |
| C. |
Snail |
D. |
Hydra |
Answer: Option A
Explanation:
|
| 24. |
Salivary slands are present in: |
| A. |
Mosquito |
B. |
Earthworm |
| C. |
Ascaris |
D. |
None of these |
Answer: Option A
Explanation:
|
| 25. |
Dorsal heart is found in: |
| A. |
Cockroach |
B. |
Earthworm |
| C. |
Prawn |
D. |
Star-fish |
Answer: Option A
Explanation:
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| 26. |
Body cavity is haemocoel in: |
| A. |
Cockroach |
B. |
Earthworm |
| C. |
Hydra |
D. |
None of these |
Answer: Option A
Explanation:
|
| 27. |
Excretory malpighian tubules are found in: |
| A. |
Hose-fly |
B. |
Prawn |
| C. |
Hydra |
D. |
Star-fish |
Answer: Option A
Explanation:
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| 28. |
Excretion in crustaceans occurs by: |
| A. |
Nephridia |
B. |
Malpighian tubules |
| C. |
Coxal glands |
D. |
Kidneys |
Answer: Option C
Explanation:
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| 29. |
Which of these animals has a ventral nerve cord: |
Answer: Option B
Explanation:
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| 30. |
Wings in cockroach arise one pair each from: |
| A. |
Pro- and mesothorax |
B. |
Meso- and methathorax |
| C. |
Pro- and metathorax |
D. |
Metethorax and 1st abdominal segment |
Answer: Option B
Explanation:
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