The endosperm is completely consumed by the developing embryo in all of the following except:

1. Pea

2. Groundnut

3. Beans

4. Castor

The micropyle remains as a small pore in the seed coat. During germination, this facilitates entry of:

I. Oxygen

II. Water

1. Only I

2. Only II

3. Both I and II

4. Neither I nor II

Why do seeds need water to germinate?

1. Following hydration, enzymes break down stored food and make it available for the embryo.

2. Water provides energy.

3. Water activates the chlorophyll molecules so that photosynthesis can begin.

4. Water dissolves the minerals in the soil so that they become available to the seed.

Non-albuminous seed is produced in

1. maize

2. castor

3. wheat

4. pea

Endosperm is consumed by developing embryo in the seed of

1. coconut

2. castor

3. pea

4. maize

Perisperm differs from endosperm in

1. being a haploid tissue

2. having no reserve food

3. being a diploid tissue

4. its formation by fusion of secondary nucleus with several sperms

Seed of castor is

1. non-endospermic, exalbuminous

2. endospermic albuminous

3. endospermic exalbuminous

4. non-endospermic albuminous.

Aleurone layer is

(1) haploid

(2) diploid

(3) triploid

(4) tetraploid

Select the option that contains all plants which produce non-endospermic seeds.

(1) Gram, Pea, Bean, Groundnut

(2) Castor, Peanut, Orchid, Wheat

(3) Coconut, Walnut, Wheat, Gram

(4) Castor, Maize, Coconu, Orchid

Censar mechanism of seed dispersal is found in

(1) Papaveraceae

(2) Liliaceae

(3) Leguminosae

(4) Rosaceae