The body of the ovule is fused within the funicle at :
1. | Micropyle | 2. | Nucellus |
3. | Chalaza | 4. | Hilum |
The plant parts which consist of two generations, one within the other, are:
(a) | Pollen grains inside the anther |
(b) | Germinated pollen grain with two male gametes |
(c) | Seed inside the fruit |
(d) | Embryo sac inside the ovule |
1. (a), (b) and (c)
2. (c) and (d)
3. (a) and (d)
4. (a) only
Which layer of the anther wall helps in its dehiscence?
1. | A | 2. | B |
3. | C | 4. | D |
The following diagram shows:
1. | Multicarpellary, syncarpus pistil of Papaver |
2. | Multicarpellary, apocarpus pistil of Papaver |
3. | Multicarpellary, apocarpous gynoecium of Michelia |
4. | Multicarpellary, syncarpous gynoecium of Michelia |
Identify the mismatch statement regarding post fertilization events from the following statements.
1.Wall of ovary is converted in to pericarp
2.Outer integument is converted in inner integument
3.Triploid nucleus develops as endosperm
4.Ovary is developed as fruit.
In some plants, the thalamus contributes to fruit formation. Such fruits are termed as:
1. False fruits
2. Aggregate fruits
3. True fruits
4. Parthenocarpic fruits
Which of the following is incorrect for wind-pollinated plants?
1. Well exposed stamens and stigma
2. Many ovules in each ovary
3. Flowers are small and not brightly colored
4. Pollen grains are light and non-sticky
What type of pollination takes place in Vallisneria?
1. | Pollination occurs in submerged conditions by water. |
2. | Flowers emerge above the surface of water and pollination occurs by insects. |
3. | Flowers emerge above the water surface and pollen is carried by the wind. |
4. | Male flowers are carried by water currents to female flowers at the surface of the water. |
Which is the most common type of embryo sac in angiosperms?
1. Tetrasporic with one mitotic stage of division
2. Monosporic with three sequential mitotic divisions
3. Monosporic with two sequential mitotic divisions
4. Bisporic with two sequential mitotic divisions
The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which during pollination, brings genetically different types of pollen grains to stigma, is:
1. | Chasmogamy | 2. | Cleistogamy |
3. | Xenogamy | 4. | Geitonogamy |