Q. No.Advantage of cleistogamy is :
1. More vigorous offspring
2. No dependence of pollinators
3. Vivipary
4. Higher genetic variability
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
Male gametophyte with the least number of cells is present in:
| 1. | Pteris | 2. | Funaria |
| 3. | Lilium | 4. | Pinus |
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
Which one of the following statements is not true?
| 1. | Pollen grains of some plants cause severe allergies and bronchial afflictions in some people. |
| 2. | The flowers pollinated by flies and bats secrete foul odour to attract them. |
| 3. | Honey is made by bees by digesting pollen collected from flowers. |
| 4. | Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups. |
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The hilum is a scar on the:
1. Fruit, where it was attached to pedicel
2. Fruit, where style was present
3. Seed, where micropyle was present
4. Seed, where funicle was attached
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