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

Concept Questions :-

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

Concept Questions :-

Stamen: Anther
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Pollen intine is made of:

1. Sporopollenin

2. Cellulose and pectin

3. Ergosterol

4. Phospholipids and cholesterol

Concept Questions :-

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

Concept Questions :-

Stamen: Male Gametophyte
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The pistil of Papaver is:

1. Monocarpellary

2. Multicarpellary apocarpous

3. Multicarpellary syncarpous

4. Absent

Concept Questions :-

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

Concept Questions :-

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

Concept Questions :-

Pollination & Outbreeding Devices
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The aquatic plant in which pollination is not carried out by water is:

(1) Vallisneria

(2) Water lily

(3) Zostera

(4) Hydrilla

Concept Questions :-

Pollination & Outbreeding Devices
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Dioecy in plants prevents:

(1) Autogamy but not geitonogamy

(2) Geitonogamy but not autogamy

(3) Both autogamy and geitonogamy

(4) Neither autogamy nor geitonogamy

Concept Questions :-

Pollination & Outbreeding Devices
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If the female parent produces unisexual flower:

(1) Emasculation must be done before maturity

(2) Emasculation must be done after maturity

(3) Emasculation must be done before pollination

(4) Emasculation is not needed

Concept Questions :-

Pollination & Outbreeding Devices
Post Pollination Events
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