Genetic self-incompatibility tends to increase

(1) pollen dispersal

(2) inbreeding

(3) pollination

(4) outcrossing

A fertilized embryo sac of an angiosperm contains:

I. Haploid cells

II. Diploid cells

III. Triploid cells

(1) I and II only

(2) I and II only

(3) II and III only

(4) I, II and III

The embryo of a grass seed is enclosed by two protective sheaths, a(n) _________, which covers the young shoot, and a(n) __________, which covers the young root.

(1) plumule; radical

(2) hypocotyl; picotyls

(3) coleoptile; coleorhiza

(4) scutellum; replum

The intine of the pollen grain is a:

1. Thick and discontinuous layer made of sporopollenin

2. Thick and continuous layer made of sporopollenin

3. Thin and discontinuous layer made of cellulose and pectin

4. Thin and continuous layer made of cellulose and pectin

In the monosporic embryo sac of a flowering plant, the number of nuclei that get surrounded by cell walls and thus are organized into cells is:

1. 5

2. 6

3. 7

4. 8

Female flowers remain submerged in water and the pollen grains are released inside the water in:

1. Sea grasses

2. Vallisneria

3. Water lily

4. Water hyacinth

Seeds offer several advantages to angiosperms. Seed formation is more dependable because:

1. Seeds have better adaptive strategies for dispersal

2. Reproductive processes become independent of water

3. Hard seed coat provides protection to the young embryos

4. They generate new genetic combinations leading to variations

The asexual production of seeds is called as:
1. Adventition
2. Fragmentation
3. Self-fertilization
4. Apomixis

What function as the embryonic root of the plant?

1. A

2. B

3. C

4. D

The following diagram shows: