KCET · BIOLOGY · STD 12 - 7. Human Health and Disease

Some of the events occur during life cycle of Plasmodium are given below. Identify the correct statement.

A The sporozoites reproduce sexually in liver cells.
B The gametocytes develop in RBC.
C Female mosquito bites a man, Gametocytes are injected
D When mosquito bites a man, gametocytes are injected.

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Answer & Solution

Correct Answer

(B) The gametocytes develop in RBC.

Step-by-step Solution

Detailed explanation

(B) The gametocytes develop in RBC.,
The infective stage of Plasmodium is sporozoite which is present in the salivary glands of female Anopheles mosquito, enter the blood of the human being with the saliva of the mosquito.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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Match the following Maxwell's equations:
(The symbols used here have their usual meanings)

List-I		List-II
(a)	Gauss' law for electrostatics	(i)	\(\oint \vec{E} \cdot d\vec{A} = \dfrac{Q}{\varepsilon_0}\)
(b)	Gauss' law for magnetism	(ii)	\(\oint \vec{B} \cdot d\vec{l} = \mu_0 \left[i_c + \varepsilon_0 \dfrac{d\phi_E}{dt}\right]\)
(c)	Faraday's law	(iii)	\(\oint \vec{B} \cdot d\vec{A} = 0\)
(d)	Ampere-Maxwell's law	(iv)	\(\oint \vec{E} \cdot d\vec{l} = -\dfrac{d\phi_B}{dt}\)

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