Reproduction in Organisms Class 12 Biology Exam Questions

Please refer to Biology For Reproduction in Organisms Class 12 Biology Exam Questions provided below. These questions and answers for Class 12 Biology have been designed based on the past trend of questions and important topics in your class 12 Biology books. You should go through all Class 12 Biology Important Questions provided by our teachers which will help you to get more marks in upcoming exams.

Class 12 Biology Exam Questions Reproduction in Organisms

Objective Type Questions

Question. In flowering plants, unisexual male flower is known as
(a) Pistillate
(b) Staminate
(c) Ovulate
(d) None of theses

Question. Which of the following is unisexual?
(a) Pea
(b) Coconut
(c) Cucurbita
(d) None of these

Question. Select the incorrect statement :
(a) Gametes in all heterogametic species are of two types
(b) Gametes are haploid
(c) Parent plant body from which a new organism arises is always haploid
(d) Isogametes are gametes that are morphologically similar

Question. Bryophytes are
(a) Diploid
(b) Haploid
(c) Polyploid
(d) None of these

Question. In diploid organisms gametes are
(a) Haploid
(b) Diploid
(c) Triploid
(d) Polyploid

Question. In diploid organisms the gamete mother cell is known as
(a) Mitocyte
(b) Meiocyte
(c) Ovum
(d) Antherozoid

Question. The male sex organ of chara is called
(a) Sperm
(b) Pistil
(c) Oogonium
(d) Antheridium

Question. Marchantia in a
(a) Monoecious plant
(b) Dipeciais plant
(c) Homothallic plant
(d) Both (b) and (c)

Question. If in human beings meiocyte contains 46 chromosomes, sperm will contain hromosomes
(a) 46
(b) 23
(c) 69
(d) None of these

Question. In majority of organisms which gamete is motile
(a) Male
(b) Female
(c) Both
(d) None is motile

Question. Juvenile phase in plants is also known as
(a) Growth phase
(b) Vegetative phase
(c) Post fertilization phase
(d) None of these

Question. Statement
A. Annual plants show clear cut vegetative reproductive and senescent phase
B. Biennial and perennial plant show clear cut vegetative, reproductive and senescent phases
Options –
(a) Both A and B are true
(b) A is true and B is false
(c) B is true and A is false
(d) Both A and B are false

Question. The flowering period for Neelakuranji in
(a) 12 weeks
(b) 12 days
(c) 12 years
(d) 12 months

Question. In 2006 flowering of which plant in South Indian hills made them a rich tourist site?
(a) Hibiscus rosasinesis
(b) Bamboo
(c) Cuscuta reflexa
(d) None of these

Question. Select the correct statement
(a) Many mammals, especially those living in natural, wild condition exhibit menstrual cycles only during favourable seasons in their reproductive phase and are therefore called continuous breeders
(b) Many other mammals are reproductively active throughout their reproductive phase and hence are called seasonal breeders.
(c) In non–primate mammals the cyclical changes in the activities of ovaries and accessory ducts as well as hormones during the reproductive phase is known as menstrual cycle
(d) Menstrual cycle takes place in apes

Question. Gametogenesis refers to
(a) Male gamete formation
(b) Female gamete formation
(c) Gamete transfer
(d) Both a and b

Question. Two gametes similar in appearance are called
(a) Heterogametes
(b) Homogametes
(c) Isogametes
(d) Both (b) and (c)

Question. Isogametes are formed in
(a) Homo sapiens
(b) Strobilanthus kunthiana
(c) Fucus
(d) Cladophora

Question. Male gavets of heterogametic orgasms is known as
(a) Antherozoid
(b) Egg
(c) Ovum
(d) Acrosome

Question. In several fung and plants bisexual condition is also known as
(a) Homothallic and dioecious
(b) Homothallie and monoecious
(c) Heterothallic and dioecious
(d) None of these

Question. State the correct statement/s
A. Life span of an organism is necessarily corelated to their size
B. Death of every individual is a certainty
C. No individual is immortal except single celled organism
D. Reproduction is the process due to which vast number of plant and animal have existed on earth for several thousands of years
Options –
(a) All are true
(b) A, B and C are true
(c) B, C and D are true
(d) A, B and D are true

Question. Biological process in which an organism gives rise to young ones similar to itself is known as
(a) Reproduction
(b) Growth
(c) Cloning
(d) None of these

Question. Asexual reproduction is common in
(a) Unicellular organism
(b) Plants with simple organization
(c) Animals with simple organization
(d) All of these

Question. In sexual reproduction
A. One parent is involved
B. Two parents are involved
C. Formation of gametes takes place
D. Fusion of gametes takes place
Options –
(a) A, C and D are true
(b) B, C and D are true
(c) B and d are true
(d) None of these

Question. Which of the following pair is wrong?

A. Binary fission	I. Paramoecium
B. Yeast	ii. Budding
C. Chlamydomonas	iii. Zoospores
D. Penicillium	iv. Sponge

Options –
(a) All of these
(b) A, B and D are true
(c) A, C and D are true
(d) None of these

Question. In yeast sexual reproductive division is
(a) Equal
(b) Unequal
(c) May be (a) or (b)
(d) None of these.

Question. Match the following

A. Eyes	I. Agave
B. Rhizome	II. Potato
C. Bulbil	III. Water hyacinth
D. Offset	IV. Ginger

Options –
(a) A–II, B–IV, C–III, D–I
(b) A–II, B–I, C–IV, D–III
(c) A–II, B–III, C–I, D–IV
(d) A–II, B–IV, C–I, D–III

Question. Which of the following is also known as Terror of Bengal?
(a) Agave
(b) Bryophyllum
(c) Water hyacinth
(d) None of these

Question. In potato a new plant emerges from
(a) Eyes on rhizome
(b) Eyes on tuber
(c) Eyes on leaf
(d) None of these

Question. Select the incorrect statement
(a) Sexual reproduction involves formation of the male and female gametes only by different individuals of opposite sex
(b) In sexual reproduction gametes fuse to form the zygote which in turn develops to form the new organism compared to asexual reproduction
(c) Sexual reproduction is an elaborate, complex and slow process as
(d) Sexual reproduction produces offspring that are non–identical to parents