Ornithophilly takes place in:
1. Yellow flower having nectaries
2. Scented flower
3. Flower with charming colour
4. Modified corolla tube
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Which pair is of insectivorous plants:
1. Drosera and Vallisneria
2. Utricularia and Hydrilla
3. Allobandra and Utricularia
4. Rafflesia and Dionea
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Eight-nucleated embryosac is:
1. Only monosporic
2. Only bisporic
3. Only tetra sporic
4. Any of the above
Endosperm is formed during double fertilization by:
1. Two polar nuclei & one male gamete
2. One polar nucleus & one male gamete
3. Ovum and male gamete
4. Two polar nuclei & two male gametes
Hair found in the inflorescences of Zea mays is the modification of:
1. | Style | 2. | Stigma |
3. | Spathe | 4. | Filaments |
Anemophilly type of pollination is found in:
1. Salvia
2. Bottlebrush
3. Vallisneria
4. Coconut
In grasses what happens in microspore mother cell for the formation of mature pollen grains:
1. One meiotic and two mitotic divisions
2. One meiotic & one mitotic division
3. One meiotic division
4. One mitotic division
Adventive embryony in citrus is due to:
1. | Nucellus | 2. | Integuments |
3. | Zygotic embryo | 4. | Fertilized egg |
In Angiosperms, pollen tubes liberate their male gametes into the:
1. Central cell
2. Antipodal cells
3. Egg cell
4. Synergids
What is the direction of the micropyle in the anatropous ovule:
1. | Upward | 2. | Downward |
3. | Right | 4. | Left |