Q. No.Cockroaches are
(1) Vector for bacterial disease
(2) Of no economic importance
(3) Bisexual
(4) More than one option is correct
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
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
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
Assertion : The development in cockroach is heterometabolous metamorphosis.
Reason : Young ones resemble the adults in all characters.
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). |
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. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R)) is false. |
| 4. | Both (A) and (R) are false. |
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
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. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R)) is false. |
| 4. | Both (A) and (R) 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. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R)) is false. |
| 4. | Both (A) and (R) are false. |
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