12th Class Biology Sample Paper Biology - Sample Paper-9

  • question_answer
    Differentiate between entomophilous flowers and hydrophilous flower.

    Answer:

    The main difference between entomophilous and hydrophilous flower are as follows :-
    S. No. Entomophilous flower Hydrophilous flower
    1. The flowers are large or if small, they group to form a large mass. The flowers are small and inconspicuous.
    2. Odour is commonly present and the flowers usually posses nectar or edible pollen. Nectar and odour are absent.
    3. Pollen grains are heavy and surrounded by a yellow sticky substance called pollenkitt. Pollen grains are light and unwettable due to mucilage cover.
    4. Stigmas are usually branched and sticky. Stigmas are long, sticky but unwettable.
    5. Rosa, Yucca, Amorphophallus are few examples of entomophilous flower, Vallisneria, Zoster a, Ceratophyllum are few examples of hydrophilous flower.


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