Both, autogamy and geitonogamy are prevented in:

1. Papaya

2. Cucumber

3. Castor

4. Maize

Subtopic:  Pollination & Outbreeding Devices |
 90%
From NCERT
AIPMT - 2012
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An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is:

1. Cuticle
2. Sporopollenin
3. Lignin
4. Cellulose

Subtopic:  Stamen: Male Gametophyte |
 97%
From NCERT
AIPMT - 2012
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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 |
 72%
From NCERT
AIPMT - 2012
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Even in the absence of pollinating agents, seed-setting is assured in:

1. Commelina

2. Zostera

3. Salvia

4. Fig

Subtopic:  Pollination & Outbreeding Devices |
 77%
From NCERT
AIPMT - 2012
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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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Filiform apparatus is a characteristic feature of:

1. egg

2. synergid

3. zygote

4. suspensor

Subtopic:  Pistil: Female Gametophyte |
 95%
AIPMT - 2011
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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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What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?

1.632.84
3.214.42

Subtopic:  Seed |
 62%
AIPMT - 2011
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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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NEET 2023 - Target Batch - Aryan Raj Singh
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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
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh