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GS Paper IUPSC Prelims 2002
Health & Medicine
Question No. 388Interactive Test Mode
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+2-0.66

Q388. In a bisexual flower, if androecium and gynoecium mature at different times, the phenomenon is known as:

In a bisexual flower, if androecium and gynoecium mature at different times, the phenomenon is known as:

Select the correct option below (or cross out options to eliminate)
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Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2002 • Science and Technology

Correct Answer: Option (A) — Dichogamy

Concept & Option Breakdown

Standard Reference Verified
  • Dichogamy: The maturation of male (androecium) and female (gynoecium) reproductive organs at different times in a hermaphroditic (bisexual) flower to prevent self-pollination and promote cross-pollination. When anthers mature first, it is protandry; when stigma matures first, it is protogyny.
  • Herkogamy: Spatial separation of anther and stigma to prevent self-pollination.
  • Heterogamy: Presence of two or more distinct types of flowers on the same individual.
Elimination Heuristic & Exam Approach

Dichogamy: 'dicho-' (apart/in two) + 'gamy' (marriage/mating) relates to temporal separation in flower organ maturity.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2002 (Q388)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (A) — Dichogamy

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Frequently Asked Questions — UPSC Prelims 2002 Q388

What is the official answer for UPSC Prelims 2002 GS Paper I Question 388 (Science and Technology)?

The official UPSC answer key for this 2002 Science and Technology (Health & Medicine) question is Option (A): "Dichogamy". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2002 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Health & Medicine". You can explore all repeated questions from Health & Medicine in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Health & Medicine UPSC Prelims question using option elimination?

Dichogamy: 'dicho' (apart/in two) + 'gamy' (marriage/mating) relates to temporal separation in flower organ maturity.

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