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

 

Subtopic:  Pistil: Female Gametophyte |
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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

Subtopic:  Pollination & Outbreeding Devices |
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Scientists are trying to transfer apomictic genes into hybrid varieties of several of our food and vegetable crops so that:

1. They get resistance against common pathogens

2. The yield of these plants can be increased many folds

3. Hybrid seeds need not be produced every year

4. Their germplasm is easily stored in labs for further research

Subtopic:  Apomixis & Polyembryony |
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Which of the following is the most common abiotic pollinating agent?

1. Insects

2. Birds and bats

3. Wind

4. Water

Subtopic:  Pollination & Outbreeding Devices |
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The asexual production of seeds is called as:
1. Adventition
2. Fragmentation
3. Self-fertilization
4. Apomixis

Subtopic:  Apomixis & Polyembryony |
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The ovule of an angiosperm is technically equivalent to

(1) megasporangium

(2) megasporophyll

(3) megaspore mother cell

(4) megaspore

Subtopic:  Pistil: Ovule |
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Megasporangium is equivalent to

(1) embryo sac

(2) fruit

(3) nucellus

(4) ovule

Subtopic:  Pistil: Ovule |
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Which one of the following may require pollinators, but is genetically similar to autogamy?

(1) Geitonogamy

(2) Xenogamy

(3) Apogamy

(4) Cleistogamy

Subtopic:  Pollination & Outbreeding Devices |
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Flowers, which have single ovule in the ovary and are packed into inflorescence are usually pollinated by

(1) water

(2) bee

(3) wind

(4) bat

Subtopic:  Pollination & Outbreeding Devices |
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Functional megaspore in an angiosperm develops into

(1) ovule

(2) endosperm

(3) embryo sac

(4) embryo

Subtopic:  Pistil: Female Gametophyte |
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