Q. No.If during development of P. americana total 39 molting were observed of different sequential stages, then how many eggs were there?
(1) 3
(2) 13
(3) 6
(4) 9
(1) 3
(2) 13
(3) 6
(4) 9
Cockroaches are
(1) Vector for bacterial disease
(2) Of no economic importance
(3) Bisexual
(4) More than one option is correct
Vestibulum is a part of
(1) Genital chamber of female cockroach
(2) Genital pouch of female cockroach
(3) Both a and b
(4) Rudimentary part of female circulatory system in cockroach
Assertion : The development in cockroach is heterometabolous metamorphosis.
Reason : Young ones resemble the adults in all characters.
Assertion : Muscle fibres are said to be contractile in nature.
Reason : Cells of muscle tissues can shorten forcefully and again return to the relaxed state.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | Blood can be coagulated by adding oxalate (Sodium or Potassium Oxalate) to it. |
| Reason (R): | Oxalate depresses the action of anticoagulant present in the blood. |
In light of the above statement, choose the most appropriate answer from the options given below:
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | Thigh muscles can get tired but not the muscles of ventricle of heart. |
| Reason (R): | Muscles of thigh are voluntary whereas that of heart are involuntary muscles. |
In light of the above statement, choose the most appropriate answer from the options given below:
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | Smooth muscle fibres do not appear to be striated. |
| Reason (R): | This is due to regular alternate arrangement of thick and thin filaments is smooth muscle fibre. |
In light of the above statement, choose the most appropriate answer from the options given below:
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Assertion : Intercalated discs are important regions of cardiac muscle cells.
Reason : Intercalated discs function as boosters for muscle contraction waves.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | Presence of connective tissue inside the brain is essential for conduction of nerve impulse. |
| Reason (R): | Connective tissue hold together the nerve cells of brain. |
In light of the above statement, choose the most appropriate answer from the options given below:
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
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