Ginger is vegetatively propagated through:

1. Rhizome

2. Bulbil

3. Stolon

4. Offset

 

Subtopic:  Asexual Reproduction |
 94%
From NCERT
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In animals exhibiting internal fertilization:

1. There is high synchrony between the two sexes

2. The chances of desiccation of the embryo is high

3. The male gamete is motile

4. Vulnerability to predators is increased

Subtopic:  Events during Sexual reproduction |
 69%
From NCERT
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Rotifers:

(1) Exhibit adult reproductive structures in juvenile phase

(2) Are plants that can be both monoecious or dioecious

(3) Produce gametes by mitosis

(4) Are animals capable of reproducing by parthenogenesis

Subtopic:  Events during Sexual reproduction |
 79%
From NCERT
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With respect to external fertilization, which of the following is not an advantage of internal fertilization?

1. A decreased risk of disease transmission

2. Minimal waste of gametes

3. Greater chances of individual egg fertilization

4. Relatively longer time of egg protection

Subtopic:  Events during Sexual reproduction |
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What is true in the given figure?

1. The plant concerned is Chara and A is Oogonium and B is Antheridium

2. The plant concerned is Chara and B is Oogonium and A is Antheridium

3. The plant concerned is Marchantia and A is Oogonium and b is Antheridium

4. The plant concerned is Marchantia and B is Oogonium

Subtopic:  Artificial |
 83%
From NCERT
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Product of sexual reproduction generally generates

(1) longer viability of seeds

(2) prolonged dormancy

(3) new genetic combination leading to variation

(4) large biomass

Subtopic:  Sexual Reproduction |
 95%
From NCERT
NEET - 2013
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Monoecious plant of Chara shows occurrence of

(1) antheridiophore and archegoniophore on the same plant

(2) stamen and carpel on the same plant

(3) upper antheirdium and lower oogonium on the same plant

(4) upper oogonium and lower antheridium on the same plant

Subtopic:  Events during Sexual reproduction |
 71%
From NCERT
NEET - 2013
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Life span of parrot is 

(1) 140 years

(2) 60 years

(3) 80 years

(4) 40 years

Subtopic:  Introduction |
 91%
From NCERT
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No individual is immortal except:

(1) Single celled organisms

(2) Green plants

(3) Sponges

(4) Drones

Subtopic:  Asexual Reproduction |
 93%
From NCERT
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Which of the following is a false statement?

(1) All organisms have evolved similar mechanism to multiply and produce offsprings

(2) Asexual reproduction is uniparental

(3) Sexual reproduction is biparental

(4) In asexual reproduction no fertilization occurs

Subtopic:  Reproduction |
 79%
From NCERT
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