The following are the stages of life cycle of Plasmodium. Arrange the stages in the proper order. A. The parasites…

Year	2024	Total
Questions	2	2

Year

2024

Total

Questions

Solution & Explanation

Core Logic

Plasmodium enters the human body as sporozoites through the bite of an infected female Anopheles mosquito (E). The sporozoites travel through the blood to reach the liver (D). The parasites initially multiply asexually within the liver cells (B) and then enter the blood stream to attack the RBCs resulting in their rupture (A). Sexual stages (gametocytes) eventually develop in red blood cells (C).

Step 1: Final Conclusion

The correct sequence is E $arrow$ $\rightarrow$ D $arrow$ $\rightarrow$ B $arrow$ $\rightarrow$ A $arrow$ $\rightarrow$ C.

Pattern Recognition

Bite (E) $arrow$ $\rightarrow$ Blood to Liver (D) $arrow$ $\rightarrow$ Hepatic phase (B) $arrow$ $\rightarrow$ Erythrocytic phase (A) $arrow$ $\rightarrow$ Gametocyte formation (C).

Chapter Mix

Class 12 Biology: Human Health and Disease

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Q157 neet_2026_03_may_morning Drugs and Alcohol Abuse

Match List I with List II:

List I (Drug)	List II (Effect)
A. Nicotine	I. Causes sense of euphoria and increased energy
B. Morphine	II. Stimulates adrenal gland to release catecholamines into blood circulation
C. Heroin	III. Effective sedative and painkiller
D. Cocaine	IV. A depressant; slows down body function

Choose the correct answer from the options given below:

A. A-III, B-II, C-IV, D-I
B. A-II, B-III, C-IV, D-I
C. A-II, B-III, C-I, D-IV
D. A-III, B-II, C-I, D-IV

Solution

Core Logic

Nicotine is present in tobacco and it activates the adrenal medulla to release catecholamines into blood circulation, so (A) $arrow$ $\rightarrow$ II. Morphine acts as an effective sedative and painkiller. It is an opioid, so (B) $arrow$ $\rightarrow$ III. Heroin acts as a depressant and slows down body function, so (C) $arrow$ $\rightarrow$ IV. Cocaine acts as a stimulant and causes a sense of euphoria and increased energy, so (D) $arrow$ $\rightarrow$ I.

Step 1: Final Conclusion

Thus, the matching is (A) $arrow$ $\rightarrow$ II, (B) $arrow$ $\rightarrow$ III, (C) $arrow$ $\rightarrow$ IV, (D) $arrow$ $\rightarrow$ I.

Pattern Recognition

Heroin is a depressant. Cocaine is a strong stimulant (euphoria). Morphine is a clinical sedative. Nicotine triggers adrenaline (catecholamines).

Chapter Mix

Class 12 Biology: Human Health and Disease

Solution & Explanation

Core Logic

Step 1: Final Conclusion

Pattern Recognition

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Solution

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