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Sexual Reproduction in Flowering Plants — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction in Flowering Plants1 Mark
Question
For two statements are given-one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
  1. Both assertion and reason are true, and reason is the correct explanation of assertion.
  2. Both assertion and reason are true, but reason is not the correct explanation of assertion.
  3. Assertion is true, but reason is false.
  4. Both assertion and reason are false.
Assertion: Most of entomophilous pollination is done by bees.
Reason: Bee-pollinated flowers are highly coloured.
✓

Answer

  1. Both assertion and reason are true, but reason is not the correct explanation of assertion.

Explanation:

Of the various insects, bees are the main flower visitors. Bees handle up to 80% of all pollination done by insects. All the bee pollinated flowers are brightly coloured, possess sweet fragrance, and/ or produce nectar. Bees are colour blind for red and are fond of yellow, violet and purple. The bees visit flowers to collect their food (pollen and nectar) and in the process prove instrumental in bringing about pollination.

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