CUET UG Biology Unit Test 2

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#1. Which of the following are outbreeding devices used by plants to prevent inbreeding depression? (A) Synchrony in pollen release and stigma receptivity. (B) Self-incompatibility (genetic mechanism). (C) Production of unisexual flowers. (D) Anther and stigma placed at the same position.

(A) (B) and (C) only

(B) (A) and (B) only

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

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

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