Which one of the following plants is monoecious?

(1) Marchantia

(2) Pinus

(3) Cycas

(4) Papaya

Subtopic:  Sexual Reproduction |
 53%
NEET - 2009
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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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