NCERT - Reproduction in Organisms Questions and Answers of Class 12 Biology | GkSeries

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Questions
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

Answer: Plasmodium
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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

Answer: Hydra
5 Regeneration is observed in...
1 amoeba
2 spirogyra
3 yeast
4 planaria

Answer: planaria
6 The disease caused by Treponema Palidium is...
1 AIDS
2 Gonorrhoea
3 Syphillis
4 Hepatitis

Answer: Syphillis
7 ______ fertilizes an ovum in a female's body.
1 Testosterone
2 Blood
3 Sperm
4 Seminal fluid

Answer: Sperm
8 The flower having both male and female reproductive organs is called...
1 sexual
2 asexual
3 bisexual
4 monosexual

Answer: bisexual
9 The main reproductive organ in human female is...
1 oviduct
2 ovary
3 uterus
4 ovum

Answer: ovary
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

Answer: multiple fission
11 The immune system becomes weak in a person suffering from...
1 Syphillis
2 Gonorrhoea
3 Typhoid
4 AIDS

Answer: AIDS
12 The protective layer formed by some unicellular organisms during adverse condition is called...
1 bud
2 cyst
3 scion
4 graft

Answer: cyst
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

Answer: puberty
14 Which structure changes first during binary fission?
1 Nuclear membrane
2 Cell membrane
3 Nucleus
4 Cytoplasm

Answer: Nucleus
15 Girls normally attain puberty at the age of _____ years.
1 10
2 12
3 14
4 16

Answer: 12

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