CBSE Class 12 Biology Reproduction in Organisms MCQs Set B

Question: Offsets are produced by
a) meiotic divisions
b) mitotic divisions
c) parthenocarpy
d) parthenogenesis.

Answer : B

Question: In oogamy, fertilisation involves
a) a small non-motile female gamete and a large motile male gamete
b) a large non-motile female gamete and a small motile male gamete
c) a large non-motile female gamete and a small non-motile male gamete
d) large motile female gamete and a small nonmotile male gamete

Answer : B

Question: The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because
a) offspring do not possess exact copies of parental DNA
b) DNA of only one parent is copied and passed on to the offspring
c) offspring are formed at different times
d) DNA of parent and offspring are completely different

Answer : A

Question: Development of new individual from female gamete without fertilisation is termed as
a) syngamy
b) embryogenesis
c) oogamy
d) parthenogenesis.

Answer : D

Question: Cultivation of floral plants is known as
a) Horticulture
b) Floriculture
c) Sericulture
d) Vermiculture

Answer : B

Question: Parthenogenesis is
a) development of embryo without fertilisation
b) development of fruit without fertilisation
c) development of fruit without hormones
d) development of embryo from egg without fertilisation.

Answer : D

Question: Which reproductive adaptation is characteristic of most terrestrial vertebrates but not of most aquatic vertebrates?
a) External fertilization
b) Internal fertilization
c) Motile gametes
d) External development

Answer : B

Question: Match the column-A with column-B
Column-A Column-B
(i) Budding a) Cockroach
(ii) Binary fission b) Hydra
(iii) Gemmule c) Amoeba
(iv) Gamete formation d) Sponge
a) (i)-b, (ii)-c, (iii)-a, (iv)-d
b) (i)-b, (ii)-c, (iii)-d, (iv)-a
c) (i)-d, (ii)-a, (iii)-c, (iv)-b
d) (i)-d, (ii)-b, (iii)-c, (iv)-a

Answer : B

Question: Which of the following event is post fertilisation event?
a) Gametogenesis
b) Gamete transfer
c) Fertilisation
d) Embryogenesis

Answer : D

Question: Which of the following organism has longest life span?
a) Elephant
b) Horse
c) Crocodile
d) Parrot

Answer : D

Question: An example of rhizome is
a) Garlic
b) Colocassia
c) Ginger
d) Onion

Answer : C

Question: Which of the following is not a distinct stage of sexual reproduction :
a) Pre gametogenesis stage
b) Pre fertilisation stage
c) Fertilisation stage
d) Post fertilisation stage

Answer : A

Question: Which one of the following pair is correctly matched?
A) Onion – Bulb
B) Ginger – Sucker
C) Chlamydomonas – Conidia
D) Yeast – Zoospores

Answer : A

Question: Anemophily takes place by:
a) By Bird
b) By Bat
c) By Snail
d) By Wind

Answer : D

Question: Find out incorrect statement :
a) Period from birth to natural death called life span
b) Life span of organisms are necessarily correlated with their size
c) Except single celled organisms, all others are mortal
d) Reproduction enables the continuity of species, generation after generation

Answer : B

Question: Where does syngamy occur in algae?
a) In archegonium
b) In water or oogonium
c) In Ovary
d) In the soil

Answer : B

Question: The reproduction takes place by gemma :
a) In higher plants
b) In lower animals
c) In some bryophytes
d) In mammals

Answer : C

Question: Write down the name of fleshy bud that produces new plant in Agave
a) Bulbil
b) Bulb
c) Rhizome
d) Offset

Answer : A

Question: Cell division is itself a mode of reproduction in :-
a) Protista & all fungi
b) Protista only
c) Monera fungi & higher plants
d) Protista & Monera

Answer : D

Question: Meiocytes are
a) Spermatids
b) Gamete mother cells
c) Bone marrow cells
d) Oocytes

Answer : B

Question: Find out the incorrect statement :-
a) Period from birth to natural death is called life span
b) Life span of an organism are necessarily correlated with their size
c) Except single celled organism all other are mortal
d) Reproduction enable the species generation after generation.

Answer : B

Question: Reproducing new plants by cells instead of seeds is known as:
A) Biofertiliser
B) Mutation
C) Tissue culture
D) Antibiotics

Answer : C

Question: Offsprings of oviparous animals are at greater risk of survival as compared to those of viviparous animals because
a) proper embryonic care and protection is absent
b) embryo does not develop completely
c) progenies are of smaller size
d) genetic variations do not occur.

Answer : A

Question: In ginger, vegetative propagation occurs through
a) bulbils
b) runners
c) rhizome
d) offsets

Answer : C

Question: Vegetative reproduction takes place in Agave:
a) By bulbils
b) By hybrid
c) By stolon
d) By rhizome

Answer : A

Question: What is the duration of juvenile phase in bamboo and interflowering period of Strobilanthus kunthiana respectively :
a) 50-100 years and 21 years
b) 50-100 years and 12 years
c) 25-300 years and 12 years
d) 25-30 years and 21 years

Answer : B

Question: Flowers are unisexual in
a) China rose
b) onion
c) pea
d) cucumber.

Answer : D

Question: Meiosis does not occur in
a) asexually reproducing diploid individuals
b) sexually reproducing haploid individuals
c) sexually reproducing diploid individuals
d) all of these.

Answer : A

Question: Bryophyllum daigremontianum reproduces by
a) Vegetative propagation
b) Budding
c) Fission
d) Fragmentation

Answer : A

Question: The process refers to development of embryo is known as
a) Gametogenesis
b) Embryogenesis
c) Parthenogenesis
d) Oogenesis

Answer : B

Question: Select the incorrect match :-
a) Asexual reproduction – Somatogenic reproduction
b) Sexual reproduction – Fusion of gametes
c) Vegetative propagation – Rhizome
d) Clone – Morphologically similar, genetically dissimilar

Answer : D

Question: External fertilisation occurs in
a) Mammals
b) Birds
c) Reptiles
d) Bony fishes

Answer : D

Question: Which of the following animal is bisexual ?
a) Cockroach
b) Leech
c) Monkey
d) Honey bee

Answer : B

Question: Based on cellular mechanisms there are two major types of regeneration found in the animals.Which one of the following is the correct example of the type mentioned?
a) Morphallaxis – Regeneration of two transversely cut equal pieces of a Hydra into two small Hydras.
b) Epimorphosis – Replacement of old and dead erythrocytes by the new ones.
c) Morphallaxis – Healing up of a wound in the skin.
d) Epimorphosis – Regeneration of crushed and filtered out pieces of a Planaria into as many new Planarians. from chapter

Answer : A

Question: Modified stem present in Gladiolus is:
A) Bulb
B) Rhizome
C) Corm
D) Bulbil

Answer : C

Question: During regeneration, modification of an organ to other organ is known as
a) morphogenesis
b) epimorphosis
c) morphallaxis
d) accretionary growth.

Answer : B

Question: Rhizome reproduction is observed in:
A) Solarium tuberosum
B) Ginger
C) Achyranthes
D) All of the above

Answer : B

Question: cycle is reported in
a) cows and sheep
b) humans and monkeys
c) chimpanzees and gorillas
d) none of these.

Answer : A

Question: Vegetative propagation in Pistia occurs by
a) stolon
b) offset
c) runner
d) sucker.

Answer : B

Question: Select the odd one out with respect to life span
a) Life span of organism are not correlated with their size
b) Crows and parrots show wide difference in their life span
c) Life span of rice is 3-4 weeks
d) It is the period between birth and natural death of an organism.

Answer : C

Question: The fleshy bud which produces new plants in hydrophytes is known as
a) Bulbil
b) Sucker
c) Turion
d) Runner

Answer : C

Question: Estrus cycle is found in
a) Gibbon
b) Gorilla
c) Cow
d) Monkey

Answer : C

Question: Which of the following is viviparous?
a) Cockroach
b) Scorpion
c) Bee
d) Butterfly

Answer : B

Question: Viviparity is found in
a) Sharks
b) lizards
c) frogs
d) birds
Answer:
a) Sharks

Answer : A

Question: First cell of sporophytic generation is :
a) Gamete
b) Spore
c) Zygote
d) Embryo

Answer : C

Question: Planaria’s most remarkable characteristics are its ability to
A) Hibernation
B) Survive without air
C) Generate bioluminescence
D) Regenerate

Answer : D

Question: Which of the following flowers only once in its lifetime?
a) Bamboo species
b) Jackfruit
c) Mango
d) Papaya

Answer : A

Question: Which one of the following plants is monoecious?
a) Pinus
b) Cycas
c) Papaya
d) Marchantia

Answer : A

Question: Which of the following statements is incorrect ?
(i) Bamboo species flower only once in their life time, generally after 50-100 years and produce large number of fruits and die.
(ii) In animals, the juvenile phase is followed by morphological and physiological changes prior to active reproductive behaviour.
(iii) The reproductive phase is of same duration in all organisms.
(iv) Juvenile phase is the period of growth between the birth of an individual till it reaches reproductive maturity.
a) Only (i)
b) Only (ii)
c) Only (iii)
d) Only (iv)

Answer : C

Question: The process of series of changes from larva to adult after embryonic development is called
a) regeneration
b) growth
c) metamorphosis
d) ageing.

Answer : C

Question: _______ is a life process that is not essential for an individual’s survival but for survival of the species.
a) Growth
b) Reproduction
c) Respiration
d) Nutrition

Answer : B

Question: Which one of the following is correctly matched?
a) Onion–Bulb
b) Ginger–Sucker
c) Chlamydomonas–Conidia
d) Yeast–Zoospores

Answer : A

Question: Which of the following options shows two plants in which new plantlets arise from the same organ?
a) Dahlia and ginger
b) Potato and sweet potato
c) Dahlia and rose
d) Potato and sugarcane

Answer : D

Question: The property of an undifferentiated cell that has the potential to develop into an entire plant is called
a) Budding
b) Cloning
c) Subpotency
d) Totipotency

Answer : D

Question: Water hyacinth or Eichhornia is one of the problematic weed of static water in India. Which of the following statement is incorrect about it :-
a) It also known as ‘Terror of Bengal’
b) It is native plant of India
c) It increases biological oxygen demand of water body
d) It spread rapidly through vegetative reproduction.

Answer : B

Question: Which of the following statement incorrect ?
a) Asexual reproduction is a rapid mode of repro- duction.
b) Embryogenesis involves cell division and cell differentiation.
c) The life spans of organisms correlated with their sizes.
d) Animals are either unisexual or bisexual.

Answer : C

Question: The continuity of life is maintained by the process of
a) Respiration
b) Reproduction
c) Photosynthesis
d) Adaptation

Answer : B

Question: Regarding the reproduction which of the following statement is correct :-
a) Asexual reproduction is common among multicellular plants & animals
b) In monerans cell division itself a mode of reproduction
c) Yeast undergo equal type cell division to produce bud
d) In fungi fission is most common method of asexual reproduction

Answer : B

Question: Most common special asexual reproductive structure seen in member of algae is :-
a) Zoospore
b) Conidia
c) Sporangia spore
d) Gemmule

Answer : A

Question: Arrange these animals in the increasing order of their life span :
Crow, Horse, Parrot, Elephant
a) Horse, Parrot, Crow, Elephant
b) Crow, Parrot, Horse, Elephant
c) Crow, Parrot, Elephant, Horse
d) Crow, Horse, Elephant, Parrot

Answer : D

Question: Which of the following animals are seasonal breeder?
a) Monkey
b) Human
c) Bird
d) Apes

Answer : C