In some members of which of the following pairs of families, pollen grains retain their viability for months after release?

1. Poaceae; Solanaceae

2. Rosaceae; Leguminosae

3. Poaceae; Rosaceae

4. Poaceae; Leguminosae

A typical angiosperm embryo sac at maturity is:
1. 7-nucleate and 7-celled
2. 8-nucleate and 8-celled
3. 8-nucleate and 7-celled
4. 7-nucleate and 8-celled

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:

. Given below is a figure of an embryo. Select the correct option with respect to it

(1) The embryo possess two cotyledons

(2) Label ‘A’ is called as coleoptile

(3) Label ‘C’ encloses radicle and root cap

(4) Label ‘B’ is called scutellum

Which of the following statements is correct with respect to parthenocarpic fruit?

(1) They develop from the thalamus

(2) They can be formed by the application of growth hormones

(3) These fruits bear seeds

(4) Can be exemplified by strawberry and cashew

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

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

The body of the ovule is fused within the funicle at :

The plant parts which consist of two generations, one within the other, are:

1. (a), (b) and (c)

2. (c) and (d)

3. (a) and (d) 

4. (a) only