Q. No.In angiosperms, microsporogenesis and megasporogenesis?
1. Occur in anther
2. Form gametes without further divisions
3. Involve meiosis
4. Occur in ovule
Coconut water from a tender coconut is?
1. Immature embryo
2. Free nuclear endosperm
3. Innermost layers of the seed coat
4. Degenerated nucellus
Male gametophyte in angiosperms produces?
1. Two sperms and a vegetative cell
2. Single sperm and a vegetative cell
3. Single sperm and two vegetative cells
4. Three sperms
Which one of the following may require pollinators, but is genetically similar to autogamy?
| 1. | Geitonogamy | 2. | Xenogamy |
| 3. | Apogamy | 4. | Cleistogamy |
Which one of the following statements is not true?
| 1. | Pollen grains are rich in nutrients and they are used in the form of tablets and syrups |
| 2. | Pollen grains of some plants cause severe allergies and bronchial afflictions in some people |
| 3. | The flowers pollinated by flies and beetles secrete foul odour to attract them |
| 4. | Honey is made by bees by digesting pollen collected from flowers |
Transmission tissue is a characteristic feature of:
2. solid style
3. dry stigma
4. wet stigma
Which of the following are the important floral rewards to animal pollinators?
2. Nectar and pollen grains
3. Floral fragrance and calcium crystals
4. Protein pellicle and stigmatic exudates
Geitonogamy involves:
| 1. | Pollination of a flower by the pollen from another flower of the same plant. |
| 2. | Pollination of a flower by the pollen from another same flower. |
| 3. | Pollination of a flower by the pollen from a flower of another plant in the same population. |
| 4. | Pollination of a flower by the pollen from a flower of another plant belonging to a distant population. |
Male gametophyte with least number of cells is present in:
1. Pteris
2. Funaria
3. Lilium
4. Pinus
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