Q. No.Perisperm differs from endosperm in:
1.
having no reserved food.
2.
being a diploid tissue.
3.
its formation by fusion of a secondary nucleus with several sperms.
4.
being a haploid tissue.
Advantage of cleistogamy is :
1. More vigorous offspring
2. No dependence of pollinators
3. Vivipary
4. Higher genetic variability
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Which one of the following statements is correct?
1. Sporogenous tissue is haploid
2. Endothecium produces the microspores
3. Tapetum nourishes the developing pollen
4. Hard outer layer of pollen is called intine
Which one of the following statements is correct?
1. The seed in grasses is not endospermic.
2. Mango is a parthenocarpic fruit.
3. A proteinaceous aleurone layer is present in maize grain.
4. A sterile pistil is called a staminode.
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Geitonogamy involves
1. Fertilization of a flower by the pollen from another flower of the same plant
2. Fertilization of a flower by the pollen from same flower
3. Fertilization of a flower by the pollen from a flower of another plant in the same population
4. Fertilization of a flower by the pollen from a flower of another plant belonging to a distant population
Pollen tablets are available in the market for:
1. In vitro fertilization
2. Breeding programmes
3. Supplementing food
4. Ex situ conservation
Function of filiform apparutus is to :
1. Recognize the suitable pollen at stigma
2. Stimulate division of generative cell
3. Produce nectar
4. Guide the entry of pollen tube
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