Q28. Identify the conditions which prevent autogamy:
(A) Presence of male or female flowers on diffe

Q: What is the correct answer for CUET UG Biology Q28?

The correct answer is b. Autogamy is self-pollination within the same flower. Mechanisms to prevent autogamy include:(A) Presence of male or female flowers on different plants (dioecy): This physically separates male and female reproductive organs on different individuals, preventing both autogamy and geitonogamy. So, (A) prevents autogamy.(B) Self-incompatibility: This is a genetic mechanism that prevents self-pollen fro

Q: Q28. Identify the conditions which prevent autogamy: (A) Presence of male or female flowers on different plants (B) Self incompatibility (C) Unsynchronised pollen release and stigma receptivity (D)…

The correct answer is b. Autogamy is self-pollination within the same flower. Mechanisms to prevent autogamy include:(A) Presence of male or female flowers on different plants (dioecy): This physically separates male and female reproductive organs on different individuals, preventing both autogamy and geitonogamy. So, (A) prevents autogamy.(B) Self-incompatibility: This is a genetic mechanism that prevents self-pollen fro

Q: What are the options for this CUET UG Biology question?

A. (A), (B) and (D) only · B. (A), (B) and (C) only · C. (A), (B), (C) and (D) only · D. (B), (C) and (D) only

Question

Q28. Identify the conditions which prevent autogamy:
(A) Presence of male or female flowers on different plants
(B) Self incompatibility
(C) Unsynchronised pollen release and stigma receptivity
(D) Geitonogamy
Choose the correct answer from the options given below:

FirstInTest · Accepted Answer

Autogamy is self-pollination within the same flower. Mechanisms to prevent autogamy include:(A) Presence of male or female flowers on different plants (dioecy): This physically separates male and female reproductive organs on different individuals, preventing both autogamy and geitonogamy. So, (A) prevents autogamy.(B) Self-incompatibility: This is a genetic mechanism that prevents self-pollen from fertilizing the ovules by inhibiting pollen germination or pollen tube growth. So, (B) prevents autogamy.(C) Unsynchronised pollen release and stigma receptivity (dichogamy): If pollen is released before the stigma becomes receptive, or vice versa, self-pollination within the same flower is prevented. So, (C) prevents autogamy.(D) Geitonogamy is a type of self-pollination involving pollen transfer from an anther to the stigma of a different flower on the *same plant*. It is not a condition that prevents autogamy, but rather a form of self-pollination itself.Thus, (A), (B), and (C) are conditions that prevent autogamy.

Answer

(A), (B) and (D) only

Answer

(A), (B) and (C) only

Answer

(A), (B), (C) and (D) only

Answer

(B), (C) and (D) only

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