Biology
Fill in the blanks with suitable words.
- Transfer of pollen grains from anthers to stigma of the same flower is called …………… .
- Different timings for maturation of gynoecium and androecium, is called …………… .
- …………… is a water-pollinated flower.
Pollination
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Answer
- Transfer of pollen grains from anthers to stigma of the same flower is called autogamy.
- Different timings for maturation of gynoecium and androecium, is called dichogamy.
- Vallisneria is a water-pollinated flower.
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Related Questions
Given below is the internal structure of an ovule. Read the information below the diagram and fill in the blanks:
Ovule is located in the inner part of the ovary. It is destined to become the seed and the ovary to become the fruit. The number of ovules in the ovary vary from species to species. It can be one or more.
Each ovule has one or two protective coverings, the integuments. The integuments leave a small opening called the (a) …………… at one end. Enclosed by the integuments is the (b) ………………(a mass of food laden cells), and further inside it, is the embryo sac. Embryo sac contains one (c) …………… and two (d) …………… at one end. Three (e) …………… cells are found at the opposite end of embryo sac.
State the name of the chief pollinating agent against the corresponding plant by choosing from those given in brackets.
- Dahlia……(Crow, butterflies, mosquito).
- Maize…….(Bees, locusts, rain, wind).
- Vallisneria………(Wind, water, ants, rabbits).
Name of the parts of the ovary which give rise to:
- Seed
- Fruit
- Fruit wall
Match the items in Column A with those in Column B.
Column A Column B Generative nucleus Pollen tube Germ pore Endosperm nucleus Exine Testa Secondary nucleus Fertilization Integument Male nuclei Egg nucleus Rough