Long filamentous threads protruding at the end of a young cob of maize are :

1.	anthers	2.	styles
3.	ovaries	4.	hairs

The arrangement of the nuclei in a normal embryo sac in the dicot plant is :

(1) 2+4+2

(2) 3+2+3

(3) 2+3+3

(4) 3+3+2

In angiosperms, microsporogenesis and megasporogenesis

(1) occur in anther

(2) form gametes without further divisions

(3) involve meiosis

(4) occur in ovule

Flowers are unisexual in

(1) pea

(2) cucumber

(3) china rose

(4) onion

Coconut water from a tender coconut is

1. Immature embryo

2. Free nuclear endosperm

3. Innermost layers of the seed coat

4. degenerated nucellus

Which of of the following fruits is parthenocarpic?

1. Brinjal

2. Apple

3. Jackfruit

4. Banana

Male gametophyte in angiosperms produces 

1. two sperms and a vegetative cell

2. single sperm and a vegetative cell

3. single sperm and two vegetative cells

4. three sperms

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

Pollen grains are shed at which stage?

(1) 2 celled 

(2) 3 celled

(3) Usually at 2-celled, but sometimes 3-celled

(4) Single celled stage

Which of these is a diploid structure ?

(1) Pollen grains

(2) Egg

(3) Megaspore

(4) MMC