Class CBSE Class 12 Biology Sexual Reproduction in Flowering Plants Q #1868
COMPETENCY BASED
APPLY
1 Marks 2006 AISSCE(Board Exam) MCQ SINGLE
Attractants and rewards are required for
(A) anemophily
(B) entomophily
(C) hydrophily
(D) cleistogamy
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Correct Answer: B
Explanation
Attractants and rewards are required for entomophily (insect pollination). Flowers produce specific odour and nectar to attract the insect for effective pollination. Entomophilous flowers are large with bright colours.

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Detailed Solution

Step 1: Analyze the requirement of attractants and rewards

In plant pollination, attractants (such as bright colors, fragrance, or nectar) and rewards (such as nectar or pollen) are biological mechanisms used by plants to entice pollinators to visit their flowers.

Step 2: Evaluate the options based on pollination modes

Anemophily (wind pollination) does not require attractants as it relies on air currents. Hydrophily (water pollination) also does not utilize attractants. Cleistogamy refers to flowers that do not open, ensuring self-pollination without external agents.

Step 3: Identify Entomophily

Entomophily is the process of pollination by insects. Insects are attracted to flowers via visual cues (color) and olfactory cues (scent), and they are rewarded with nectar or pollen, making this the correct mode of pollination.

Final Answer: entomophily

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Pedagogical Audit
Bloom's Analysis: This is an APPLY question because the student must apply their knowledge of pollination syndromes to distinguish between biotic and abiotic pollination strategies.
Knowledge Dimension: CONCEPTUAL
Justification: The question tests the understanding of the relationship between plant reproductive strategies and ecological interactions.
Syllabus Audit: In the context of CBSE Class 12, this is classified as COMPETENCY. It requires the student to synthesize information regarding floral adaptations for biotic pollination as outlined in the Sexual Reproduction in Flowering Plants chapter.

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