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STD 12 - 1. sexual reproduction in flowering plants — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 1. sexual reproduction in flowering plants1 Mark
MCQ
Which one of the following statements is not true?
  • A
    The flowers pollinated by flies and bats secrete foul odour to attract them.
  • ✓
    Honey is made by bees by digesting pollen collected from flowers.
  • C
    Pollen grains are rich in nutrients and they are used in the form of tablets and syrups.
  • D
    Pollen grains of some plants cause severe allergies and bronchial afflictions in some people.
✓

Answer

Correct option: B.
Honey is made by bees by digesting pollen collected from flowers.
b
(b) : Honey is made from nectar through a process of regurgitation and evaporation. Honeybees transform saccharides (carbohydrates) into honey by regurgitating it a number of times, until it is partially digested. The bees do the regurgitation and digestion as a group. After the last regurgitation, the aqueous solution is still high in water, the process continues by evaporation of much of the water and enzymatic transformation. Honey is produced by bees as a food source.

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