Which is the particular type of drug that is obtained from the plant whose one flowering branch is shown here?

A Hallucinogen
B Depressant
C Stimulant
D Pain killer

Verified Solution

Answer & Solution

Correct Answer

(A) Hallucinogen

Step-by-step Solution

Detailed explanation

(a) : The plant illustrated in the diagram is Datura. Seeds of Datura stramonium are misused for their hallucinogenic properties because of the presence of anticholinergic alkaloids atropine, hyoscyamine and scopolamine (= hyoscine). However, even in slight excess, they can cause death.

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.

Same subject

Match List I with List II with respect to chronology of evolution of life forms :

List I	List II
A. About 65 mya	I. Jawless fish probably evolved
B. About 500 mya	II. The dinosaurs suddenly disappeared from the earth
C. About 350 mya	III. Seedweeds and few plants probably existed
D. About 320 mya	IV. Invertebrates were formed and became active

Choose the correct answer from the options given below :

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