CBSE Questions for Class 12 Medical Biology Reproduction In Organisms Quiz 3 - MCQExams.com

Regeneration is carried out by specialized cells. 
  • True
  • False
Which of the following organisms can reproduce through regeneration?
  • Hydra
  • Planaria
  • Wall lizard
  • Both A and B
Fertilization is
  • Union of diploid spermatozoon with diploid ovum to form diploid zygote.
  • Union of haploid sperm with haploid ovum to form haploid zygote.
  • Union of haploid sperm with haploid ovum to form diploid zygote.
  • Union of diploid sperm with haploid ovum to form triploid zygote.
Which of the following organism affects liver of cattle?
  • Liver fluke
  • Nematodes
  • Hydra
  • Mosquito
Why animals like frog and fish produce hundreds of eggs while hens and humans produce one egg at a time?
  • In frogs and fish, internal fertilization occurs.
  • Eggs of hens and humans are exposed to external environment.
  • Eggs of frogs and fish are produced inside the mother's body and hence they are protected.
  • Eggs of frogs and fish are preyed by predators and are exposed to environment.
Which of the following methods involves the formation of new plants from roots, stems, and leaves?
  • Sexual reproduction
  • Vegetative reproduction
  • Layering
  • Grafting
In which animal parthenogenesis is common?
  • Rats
  • Hens
  • Aphids
  • Monkeys
When the offsprings are produced without fertilisation of ova it is called as _______
  • Gametogenesis
  • Copulation
  • Oviposition
  • Parthenogenesis
In potatoes, new plants grow from
  • Leaves
  • Buds on the leaflets
  • Roots
  • Eyes 
Vegetative reproduction is defined as: 
  • Fertilization of stamens and stigma through pollen grains.
  • Development of new plant from spores when favourable conditions are provided.
  • Reproduction of new plants from a part of a plant other than the reproductive organs.
  • Regeneration of a plant from a piece of plant.
What are spores?
  • Tiny cells protected by thick walls to survive unfavorable conditions.
  • Buds formed in long chains.
  • Outgrowths from parent organism.
  • New organisms growing from leaflets.
The nature of fertilization in frog is
  • External
  • Internal
  • Both external and internal
  • None of the above
Which type of fertilization is found in frogs?
  • External, in water
  • Internal, in abdomen
  • External, in uterus
  • Internal, in epididymis
The fusion between the male and female gamete is called
  • Syngamy
  • Triple fusion
  • Double fertilization
  • Amphimixis
In Hibiscus, plants grow from _________.
  • Seeds
  • Flowers
  • Roots
  • Branches
Natural parthenogenesis occurs in  
  • Honeybee
  • Frog
  • Man
  • Rabbit
Fertilization results into the formation of
  • Egg
  • Zygote
  • Sperm
  • None of the above
Bryophyllum plant is vegetatively propagated by
  • Underground stem tuiber
  • Leaf buds
  • Underground root tuber
  • Stolon and rhizome
Fusion between gametes of unequal sizes is called as
  • Isogamy
  • Oogamy
  • Anisogamy
  • None of the above
Plants which has lost their capacity to produce seeds, reproduce by:
  • Spores
  • Vegetative propagation
  • Fission
  • Regeneration
The method of reproduction in Honey bee is
  • Sexual
  • Asexual
  • Parthenogenesis
  • Both A and C
Regeneration occurs in:
  • Planaria
  • Lizards
  • Star fish
  • All of the above
Fission of the egg and the sperm is known as ______ 
  • Fertilization
  • Metamorphosis
  • Doning
  • None of above
Which of the reproductive strategy is most effective in stable environment and abundant resources?
  • Sexual reproduction, with intense parental care and slow development
  • Sexual reproduction, with slight parental care and quick development
  • Parthenogenesis
  • All of the above
  • None of the above
Which of the following statement(s) is/are true for tissue culture?
  • It is a simple and fast process. 
  • Many plants can be grown from one parent plant in disease free condition. 
  • Both A and B
  • None of the above
Define fertilization
  • Fusion of the egg and the sperm
  • Transformation of the larva into adult
  • Fusion of sperm and zygote
  • None of above
In which of the following phenomena the two participating organisms act as gametes?
  • Isogamy
  • Anisogamy
  • Hologamy
  • Conjugation
  • None of the above
.......... is a form of reproduction which does not involve a male gamete.
  • Fragmentation
  • Spores
  • Budding
  • Agamogenesis
Arrange the following steps in proper order

a) Formation of zygote
b) Formation of embryo
c) Fusion of male and female gamete
d) Implantation of embryo into uterus
  • a $$\rightarrow$$ c $$\rightarrow$$ d $$\rightarrow$$ a
  • a $$\rightarrow$$ b $$\rightarrow$$ c $$\rightarrow$$ d
  • c $$\rightarrow$$ a $$\rightarrow$$ b $$\rightarrow$$ d
  • d $$\rightarrow$$ c $$\rightarrow$$ b $$\rightarrow$$ a
Assisted reproductive technology does not include
  • Parthenogenesis
  • Gamete intra fallopian transfer
  • Zygote intra fallopian transfer
  • Artificial insemination
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