Q. No.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
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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Filiform apparatus is characteristic feature of:
1. Nucellar embryo
2. Aleurone cell
3. Synergids
4. Generative cell
The wheat grain has an embryo with one large, shield-shaped cotyledon known as:
| 1. | Coleorrhiza | 2. | Scutellum |
| 3. | Coleoptile | 4. | Epiblast |
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In angiosperms, microsporogenesis and megasporogenesis:
1. form gametes without further divisions
2. Involve meiosis
3. occur in ovule
4. occur in anther
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Proximal end of the filament of stamen is attached to the:
1. Thalamus or petal
2. Anther
3. Connective
4. Placenta
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The coconut water from tender coconut represents:
1. Free nuclear endosperm
2. Endocarp
3. Fleshy mesocarp
4. Free nuclear proembryo
Which of the following statements is not correct?
1. Some reptiles have also been reported as pollinators in some plant species. ,
2. Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same
species grows into the style.
3. Insects that consume pollen or nectar without bringing about pollination are called pollen/ nectar robbers.
4. Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with
those of the pistil
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