The coconut water and the edible part of coconut are equivalent to:

1. Endosperm

2. Endocarp

3. Mesocarp

4. Embryo

Subtopic:  Endosperm |
 90%
From NCERT
AIPMT - 2012
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Apomictic embryos in Citrus arise from:

1. synergids

2. maternal sporophytic tissue in ovule

3. antipodal cells

4. diploid egg

Subtopic:  Apomixis & Polyembryony |
 71%
From NCERT
AIPMT - 2010
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Wind pollination is common:
1.  lilies
2.  grasses
3.  orchids
4.  legumes
Subtopic:  Pollination & Outbreeding Devices |
 87%
From NCERT
AIPMT - 2011
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Nucellar polyembryony is reported in species of:

1.  Gossypium

2.  Triticum

3.  Brassia

4.  Citrus

Subtopic:  Apomixis & Polyembryony |
 88%
From NCERT
AIPMT - 2011
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In which one of the following pollination is autogamous?
1.  Xenogamy
2.  Chasmogamy
3.  Cleistogamy
4.  Geitonogamy
Subtopic:  Pollination & Outbreeding Devices |
 80%
From NCERT
AIPMT - 2011
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Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called:

1. xenogamy

2. geitonogamy

3. karyogamy

4. autogamy

Subtopic:  Pollination & Outbreeding Devices |
 92%
From NCERT
AIPMT - 2010
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Wind pollinated flowers are:

1. small, brightly coloured, producing large number
of pollen grains
2. small, producing large number of dry pollen grains
3. large, producing abundant nectar and pollen
4. small, producing nectar and dry pollen

Subtopic:  Pollination & Outbreeding Devices |
 80%
From NCERT
AIPMT - 2010
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Unisexuality of flowers prevents:

1. autogamy, but not geitonogamy

2. Both geitonogamy and xenogamy

3. geitonogamy, but not xenogamy

4. autogamy and geitonogamy

Subtopic:  Pollination & Outbreeding Devices |
 60%
From NCERT
AIPMT - 2008
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What does the filiform apparatus do at the entrance into the 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 the opening of the pollen tube
4. it guides the pollen tube from the synergid to the egg

Subtopic:  Pistil: Female Gametophyte |
 54%
From NCERT
AIPMT - 2008
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Which one of the following is resistant to enzyme action?

1. Cork
2. Wood fibre
3. Pollen exine
4. Leaf cuticle
Subtopic:  Stamen: Male Gametophyte |
 94%
From NCERT
AIPMT - 2008
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