The egg apparatus is made up of two ________ and one ________ at the ________ end of the embryo sac.

(1) antipodals, egg cell, micropylar

(2) synergids, egg cell, chalazal

(3) egg cells, synergids, chalazal

(4) synergids, egg cells, micropylar

Subtopic:  Pistil: Female Gametophyte |
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Consider the following features seen in a plant:

I. Male and female reproductive organs are generally found in separate flowers.

II. The male flowers having a number of long filaments terminating in exposed stamens.

III. The female  flowers having long, feather-like stigmas.

The flowers of this plant would most likely be pollinated by:

(1) Wind

(2) Water

(3) Bees

(4) Birds

Subtopic:  Pollination & Outbreeding Devices |
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The cells of which of the following layers of the anther wall are multinucleated due to endomitosis?

(1) Epidemis

(2) Endothecium

(3) Middle layer

(4) Tapetum

Subtopic:  Stamen: Anther |
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A typical angiosperm anther is dithecous which means that it is:

(1) One lobed and the lobe has two theca

(2) Two lobed and each lobe has two theca

(3) Two lobed and each lobe has one theca

(4) Four lobed and each lobe has two theca

Subtopic:  Stamen: Anther |
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Which of the following layers in the wall of an anther nourishes the developing pollen grains?

(1) Tapetum

(2) Epidermis

(3) Endothecium

(4) Middle layers

Subtopic:  Stamen: Anther |
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Pollen intine is made of:

1. Sporopollenin

2. Cellulose and pectin

3. Ergosterol

4. Phospholipids and cholesterol

Subtopic:  Stamen: Male Gametophyte |
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Pollen grains lose their viability within 30 minutes of their release in:

1. Rose

2. Potato

3. Pea

4. Wheat

Subtopic:  Stamen: Male Gametophyte |
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The pistil of Papaver is:

1. Monocarpellary

2. Multicarpellary apocarpous

3. Multicarpellary syncarpous

4. Absent

Subtopic:  Pistil: Ovule |
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How many of the nuclei in the female gametophyte in angiosperms are surrounded by cell wall?

(1) 5

(2) 6

(3) 7

(4) 8

Subtopic:  Pistil: Female Gametophyte |
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The only type of pollination that brings genetically different types of pollen grains to the stigma is:

(1) Chasmogamy

(2) Cleistogamy

(3) Geitonogamy

(4) Xenogamy

Subtopic:  Pollination & Outbreeding Devices |
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