Flowers are unisexual in

(1) pea

(2) cucumber

(3) china rose

(4) onion

Subtopic:  Sexual Reproduction | Events during Sexual reproduction |
 55%
From NCERT
NEET - 2015
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A scion is grafted to a stock. The quality of fruits produced will be determined by the genotype of 

(1) stock

(2) scion

(3) both stock and scion

(4) neither stock nor scion.

Subtopic:  Artificial |
 50%
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Which form of reproduction is correctly matched?

(1) Euglena → transverse binary fission

(2) Paramecium → longitudinal binary fission

(3) Amoeba → multiple fission

(4) Plasmodium → binary fission

Subtopic:  Asexual Reproduction |
 53%
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Which one of the following methods is commonly used to maintain the genetic traits of a given plant?

(1) By propagating through seed germination

(2) By propagating through vegetative multiplication

(3) By generating hybrids through intergeneric pollination

(4) By treating the seeds with gamma radiations

Subtopic:  Asexual Reproduction |
 62%
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Which animal has the longest gestation period?

(1) Shark

(2) Walrus

(3) Elephant

(4) Dog

Subtopic:  Events during Sexual reproduction |
 79%
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The ploidy of bread wheat is 

(1) 4 n

(2) 6 n

(3) 2 n

(4) 8 n

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Life span of parrot is 

(1) 140 years

(2) 60 years

(3) 80 years

(4) 40 years

Subtopic:  Introduction |
 92%
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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Find out the correct statement:

(1) Life spans of organisms are necessarily correlated with their sizes

(2) The sizes of crows and parrots are not very different, so their life spans are almost similar

(3) A peepal tree has much shorter life span as compared to a mango tree

(4) Reproduction is essential for continuity of species on the earth

Subtopic:  Reproduction |
 90%
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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