Multiple Choice QuestionsThe coconut water and the edible part of coconut are equivalent to
endosperm
endocarp
mesocarp
mesocarp
What is the function of germ pore?
Emergence of radicale
Absorption of water for seed germination
Initiation of pollen tube
Initiation of pollen tube
C.
Initiation of pollen tube
The pollen grain has two layers - outer exine and inner intine. Exine is made up of highly resistant sporopollenin while intine is pectocellulosic. At certain places exine is thin or absent called germpore or germinal furrow. After reaching on stigma the pollen grain absorbs water and nutrients from the stigmatic secretion through its germ pore. The tube or pollen grain through one of the germ pores or germinal furrows to form a pollen tube.
Which one of the following statements is wrong?
When pollen is shed at two-celled stage, double fertilization does not take place
Vegetative cell is larger than generative cell
Pollen grains in some plants remain viable for months
Pollen grains in some plants remain viable for months
Which one of the following may require pollinators, but is genetically similar to autogamy?
Geitonogamy
Xenogamy
Apogamy
Apogamy
Which one of the following statements is not true?
Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
The flowers pollinated by flies and bats secrete foul odour to attract them
The flowers pollinated by flies and bats secrete foul odour to attract them
Which one of the following statements is not true?
Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
The flowers pollinated by flies and bats secrete foul odour to attract them (c) Honey is made by bees by digesting
The flowers pollinated by flies and bats secrete foul odour to attract them (c) Honey is made by bees by digesting
Which of the following are the important floral rewards to the animal pollinators?
Colour and large size flower
Nectar and pollen grains
Floral fragrance and calcium crystals
Floral fragrance and calcium crystals
larger but to have smaller sex organs
larger and to haver larger sex organs
smaller and to have smaller sex organs
smaller and to have smaller sex organs
Which one of the following statements is correct?
Seeds of orchids have oil-rich endosperm
Placentation in primrose is basal
Flower of tulip is a modified shoot
Flower of tulip is a modified shoot
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