Q. No.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
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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Which one of the following may require pollinators, but is genetically similar to autogamy?
1. Xenogamy
2. Apogamy
3. Cleistogamy
4. Geitonogamy
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Which of the following are the important floral rewards for animal pollinators?
1. Nectar and pollen grains
2. Floral fragrance and calcium crystals
3. Protein pellicle and stigmatic exudates
4. Colour and large size of the flower
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Transmission tissue is a characteristic feature of:
| 1. | Solid style | 2. | Dry stigma |
| 3. | Wet stigma | 4. | Hollow style |
Male gametophyte in angiosperms produces:
1. Single sperm and a vegetative cell
2. Single sperm and two vegetative cells
3. Three sperms
4. Two sperms and a vegetative cell
Coconut water from a tender coconut is:
1. Free nuclear endosperm
2. Innermost layers of the seed coat
3. Degenerated nucellus
4. Immature embryo
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