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Free Download as PDF of the detailed solutions for class 12 Biology from NCERT or CBSE text book as per exam pattern, to help you in day to day learning. We provide all important questions and answers from chapter Reproduction in Organisms of Biology.
31
The male organ in a flowering plant is...
[1]
Carpel
[2]
Seed
[3]
Stamen
[4]
Pollen
32
Which of the following shows budding?
[1]
Yeast
[2]
Amoeba
[3]
Plasmodium
[4]
Paramoecium
33
In the process of sexual reproduction...
[1]
only male is necessary
[2]
only female is necessary
[3]
both male and female are necessary
[4]
either a male or a female is necessary
Answer: both male and female are necessary
34
Which of the following is a surgical method of contraception for women?
[1]
Copper-T
[2]
Tubectomy
[3]
Vasectomy
[4]
Loop
35
By which simple method asexual reproduction takes place in unicellular organisms like protozoa and bacteria?
[1]
Fragmentation
[2]
Fission
[3]
Budding
[4]
Regeneration
36
Which organisms reproduce through fragmentation?
[1]
Volvox, Sea anemone
[2]
Amoeba, Sea anemone
[3]
Paramoecium, Sea anemone
[4]
Spirogyra, Sea anemone
Answer: Spirogyra, Sea anemone
37
The main reproductive organ in human male is..
[1]
testis
[2]
penis
[3]
scrotum
[4]
vas deferans
38
The method of asexual reproduction in spirogyra is...
[1]
division of a cell into two cells
[2]
breaking of filaments into smaller bits
[3]
division of a cell into many cells
[4]
formation of a large number of buds
Answer: breaking of filaments into smaller bits
39
Rhizopus reproduces by...
[1]
binary fission
[2]
budding
[3]
fragmentation
[4]
sporulation
40
In humans, the fertilization of ovum by a sperm takes place in...
[1]
testis
[2]
oviduct
[3]
ovary
[4]
uterus
41
Which of the following is not produced in ovary?
[1]
Ovum
[2]
Estrogen
[3]
Progesterone
[4]
Testosterone
42
Vegetative propagation is observed in...
[1]
yeast
[2]
mucor
[3]
hydra
[4]
potato
43
Which of the following is a chemical device for birth control?
[1]
Copper-T
[2]
pills
[3]
Loop
[4]
Birth-control
44
In flowering plants, the fertilized egg cell develops into ______ within ovule.
[1]
seed
[2]
fruit
[3]
flower
[4]
embryo
45
The method by which desired characters of two plants can be combined is...
[1]
cutting
[2]
layering
[3]
budding
[4]
grafting
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