A typical angiosperm embryo sac at maturity is:

1. 7-nucleate and 7-celled

2. 8-nucleate and 8-celled

3. 8-nucleate and 7-celled

4. 7-nucleate and 8-celled

Subtopic:  Pistil: Female Gametophyte |
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Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?

1. Ovules develop into an embryo sac

2. Ovary develops into fruit

3. Zygote develops into an embryo

4. Central cell develops into endosperm

Subtopic:  Pistil: Female Gametophyte |
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Which is the most common type of embryo sac in angiosperms?

1. Tetrasporic with one mitotic stage of division

2. Monosporic with three sequential mitotic divisions

3. Monosporic with two sequential mitotic divisions

4. Bisporic with two sequential mitotic divisions

Subtopic:  Pistil: Female Gametophyte |
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Functional megaspore in an angiosperm develops into :

1.  Endosperm 2.  Embryo sac
3.  Embryo 4.  Ovule
Subtopic:  Pistil: Female Gametophyte |
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In majority of angiosperms

1.  egg has a filiform apparatus

2.  there are numerous antipodal cells

3.  reduction division occurs in the megaspore mother cells

4.  a small central cell is present in the embryo sac

Subtopic:  Pistil: Female Gametophyte |
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Filiform apparatus is a characteristic feature of

1. Generative cell

2. nucellar embryo

3. aleurone cell

4. synergids

Subtopic:  Pistil: Female Gametophyte |
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In angiosperms, microsporogenesis and megasporogenesis

1. Occur in anther

2. Form gametes without further divisions

3. Involve meiosis

4. Occur in ovule

Subtopic:  Stamen: Male Gametophyte | Pistil: Female Gametophyte |
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Function of filiform apparutus is to :

1. Recognize the suitable pollen at stigma

2. Stimulate division of genrative cell

3. Producer nectar

4. Guide the entry of pollen tube

Subtopic:  Pistil: Female Gametophyte |
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The gynoecium consists of many free pistils in flowers of

1. Aloe

2. Tomato

3. Papaver

4. Michelia

Subtopic:  Pistil: Female Gametophyte |
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What does the filiform apparatus do at the entrance into ovule?
1. it helps in the entry of pollen tube into the synergid
2. it prevents the entry of more than one pollen tube into the embryo sac
3. it brings about opening of the pollen tube
4. it guides pollen tube from the synergid to the egg

Subtopic:  Pistil: Female Gametophyte |
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