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31. |
Cockroach has no RBCs and haemoglobin because: |
A. |
It is an invertebrate |
B. |
It does not respire |
C. |
Its blood does not transport O2 and CO2 as tissues have direct exchange of gases from air |
D. |
Haemocyanin is O2 carrier in its blood |
Answer: Option C
Explanation:
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32. |
Reproduction without fertilization occurs in: |
A. |
Male boney-bee |
B. |
Cockroach |
C. |
Scorpion |
D. |
None of these |
Answer: Option A
Explanation:
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33. |
Complete metamorphosis occurs in: |
A. |
House-fly |
B. |
Cockroach |
C. |
Snail |
D. |
Scorpion |
Answer: Option A
Explanation:
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34. |
Mouth-parts of cockroach are adapted for: |
A. |
Cutting and chewing |
B. |
Drilling |
C. |
Piercing |
D. |
Sucking |
Answer: Option A
Explanation:
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35. |
Which of the two parts in cockroach are fundamentally similar in structure: |
A. |
Anal styles and labrum |
B. |
Mandibles and antennae |
C. |
Maxillae and legs |
D. |
Wings and anal cerci |
Answer: Option C
Explanation:
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36. |
Cockroach is active in: |
A. |
Day time |
B. |
Night hours |
C. |
Morning hour |
D. |
Evening hours |
Answer: Option B
Explanation:
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37. |
Which of these is a poor flier: |
A. |
House-fly |
B. |
Mosquito |
C. |
Cockroach |
D. |
Spider |
Answer: Option C
Explanation:
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38. |
Number of segments forming thorax in cockroach is: |
Answer: Option C
Explanation:
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39. |
Which of these has fixed number of body segments and legs: |
A. |
Tacnia |
B. |
Earthworm |
C. |
Cockroach and ants |
D. |
Hydra |
Answer: Option C
Explanation:
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40. |
Anal styles are found in: |
A. |
Male cockroach |
B. |
Female cockroach |
C. |
Both (a) & (b) |
D. |
None of these |
Answer: Option A
Explanation:
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