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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.
(1)
Asexual reproduction is..
[1]
a fusion of specialized cells
[2]
a method by which all types of organisms reproduce
[3]
a method producing genetically identical off-springs
[4]
a method involving more than one parent
Answer: a method producing genetically identical off-springs
(2)
Which of the following organisms does not reproduce by binary fission?
[1]
Amoeba
[2]
Euglena
[3]
Plasmodium
[4]
Paramoecium
(3)
Reproduction is essential for living organisms in order to...
[1]
keep the individual organism alive
[2]
fulfill their energy requirement
[3]
maintain growth
[4]
continue the species forever
Answer: continue the species forever
(4)
A multicellular organism which reproduces by budding is...
[1]
Amoeba
[2]
Yeast
[3]
Paramoecium
[4]
Hydra
(5)
Regeneration is observed in...
[1]
amoeba
[2]
spirogyra
[3]
yeast
[4]
planaria
(6)
The disease caused by Treponema Palidium is...
[1]
AIDS
[2]
Gonorrhoea
[3]
Syphillis
[4]
Hepatitis
(7)
______ fertilizes an ovum in a female's body.
[1]
Testosterone
[2]
Blood
[3]
Sperm
[4]
Seminal fluid
(8)
The flower having both male and female reproductive organs is called...
[1]
sexual
[2]
asexual
[3]
bisexual
[4]
monosexual
(9)
The main reproductive organ in human female is...
[1]
oviduct
[2]
ovary
[3]
uterus
[4]
ovum
(10)
When one cell divides to produce many cells, then the division is known as...
[1]
fission
[2]
binary fission
[3]
fragmentation
[4]
multiple fission
(11)
The immune system becomes weak in a person suffering from...
[1]
Syphillis
[2]
Gonorrhoea
[3]
Typhoid
[4]
AIDS
(12)
The protective layer formed by some unicellular organisms during adverse condition
is called...
[1]
bud
[2]
cyst
[3]
scion
[4]
graft
(13)
The stage at which there is a gradual change in structure of reproductive organs of
human male and female is called...
[1]
menarche
[2]
puberty
[3]
spermatogenesis
[4]
oogenesis
(14)
Which structure changes first during binary fission?
[1]
Nuclear membrane
[2]
Cell membrane
[3]
Nucleus
[4]
Cytoplasm
(15)
Girls normally attain puberty at the age of _____ years.
[1]
10
[2]
12
[3]
14
[4]
16
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