Please refer to Chapter 8 How do the Organisms Reproduce MCQ Class 10 Science with answers below. These multiple-choice questions have been prepared based on the latest NCERT book for Class 10 Science. Students should refer to MCQ Questions for Class 10 Science with Answers to score more marks in Grade 10 Science exams. Students should read the chapter How do the Organisms Reproduce and then attempt the following objective questions.

MCQ Questions Class 10 Science Chapter 8 How do the Organisms Reproduce

The How do the Organisms Reproduce MCQ Class 10 Science provided below covers all important topics given in this chapter. These MCQs will help you to properly prepare for exams.

Question. The ability to reproduce is lost in a female after   
(a) fertilisation
(b) menstruation
(c) gamete formation
(d) menopause

Question. The ability of an organism to develop whole body from a broken piece or fragment is called  (a) binary fission
(b) budding
(c) multiple fission
(d) regeneration

Question. The flower of the Hibiscus plant is   
(a) bisexual
(b) unisexual
(c) neuter
(d) very small

Question. The seed that contains the future plant is called the   
(a) cotyledons
(b) seed coat
(c) germ cells
(d) embryo

Question. A common feature of reproduction in Amoeba, spirogyra and yeast is that:   
(a) Asexual reproduction occurs after sexual reproduction
(b) Asexual reproduction occurs before sexual reproduction
(c) Asexual reproduction does not involve gametes
(d) Asexual reproduction involves only one parent

Question. In vegetative reproduction, the new individuals are genetically –   
(a) Similar
(b) Dissimilar
(c) Abnormal
(d) None of these

Question. There is a greater possibility for the evolution of a new species in organisms which reproduce by   
(a) binary fission
(b) budding
(c) fertilisation
(d) regeneration

Question. The ability of a cell to divide into several cells during reproduction in Plasmodium is called   
(a) budding
(b) multiple fission
(c) binary fission
(d) reduction division

Question. Spirogyra reproduce by   
(a) budding
(b) fragmentation
(c) regeneration
(d) fission

Question. The anther contains   
(a) Sepals
(b) Ovules
(c) Carpel
(d) Pollen grains.

Question. What marks the beginning of the reproductive life of a woman?   
(a) Menopause
(b) Menarche
(c) Fertilisation
(d) Ovulation

Question. Where does fertilisation take place?     
(a) Uterus
(b) Vagina
(c) Fallopian tube
(d) Cervix

Question. In human males, the testes lie in the scrotum, because it helps in the   
(a) process of mating
(b) formation of sperms
(c) easy transfer of gametes
(d) secretion of estrogen

Question. Fertilization in plants occurs in the:   
(a) Embryo sac
(b) Style
(c) Pollen tube
(d) Stigma

Question. The embryo in humans gets nutrition from the mother’s blood with the help of a special tissue called   
(a) Placenta
(b) Villi
(c) Uterus
(d) Womb

Question. Which of the following method of contraception protects from acquiring sexually transmitted diseases?   
(a) Surgery
(b) Condoms
(c) Copper-T
(d) Oral-pills

Question. Cleistogamous condition is present in
(a) Brassica oleracea
(b) Solanum tuberosum
(c) Arachis hypogea
(d) Allium cepa

Question. Pollination between different flowers of same plant is called
(a) autogamy
(b) geitonogamy
(c) allogamy
(d) xenogamy

Question. Double fertilization is
(a) fusion of two male gametes with egg
(b) fusion of one male gamete with egg and the other male gamete with the polar bodies
(c) both are correct
(d) both are incorrect

Question. The structure meant for the nourishment of developing embryo in case of plant is
(a) pollen tube
(b) endosperm
(c) both A & B are correct
(d) none of these

Question. Acrosome aids the sperm to
(a) penetrate vitelline membrane of ovum
(b) find ovum
(c) swim
(d) higher activity

Question. The genetic information is stored in –
(a) DNA
(b) RNA
(c) Ribosome
(d) ER

Question. Each female flower consist of
(a) ovary
(b) stigma
(c) ovary, style and stigma
(d) thalamus

Question. In mammals, the testes lies in scrotal sacs due to
(a) presence of urinary bladder
(b) presence of rectum
(c) long vas-deference
(d) requirement of low temperate for spermatogenesis

Question. Graffian follicles are found in
(a) testis of mammas
(b) ovary of frog
(c) ovary of cockroach
(d) ovary of mammals

Question. Acrosome is made up of
(a) mitochondria
(b) centrioles
(c) golgi bodies
(d) ribosomes

Question. The normal duration of menstrual cycle is   
(a) 7 – 8 days
(b) 13 – 15 days
(c) 3 – 4 days
(d) 28 days

Question. Assertion: Amoeba reproduced by fission       
Reason: All unicellular organisms reproduced by asexual method.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.

Question. Which of the following is not an artificial method of vegetative propagation?   
(a) Cutting
(b) Layering
(c) Budding
(d) Grafting

Question. Pollen grains are produced by   
(a) ovary
(b) ovule
(c) anther
(d) corolla

Question. Plants like banana, rose, jasmine, orange have lost the capacity to produce   
(a) seeds
(b) buds
(c) flower
(d) roots

Question. During grafting, the portion of plant that is grafted is called –   
(a) Stock
(b) Scion
(c) stalk
(d) stem

Question. Which among the following diseases is not sexually transmitted?   
(a) Syphyllis
(b) Hepatitis
(c) HIV-AIDS
(d) Gonorrhea

Assertion and Reason Based MCQs :

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as:
(A) Both A and R are true and R is the correct explanation of A.
(B) Both A and R are true but R is NOT the correct explanation of A.
(C) A is true but R is false.
(D) A is false and R is true.

Question. Assertion (A): Surgical methods are most effective methods of contraception.
Reason (R): Surgical method blocks gametes transport and hence prevent fertilisation.

Question. Assertion (A): Double fertilisation is unique to angiosperms.
Reason (R): Triple fusion occurs in asexual reproduction.

Question. Assertion (A): An embryo is formed from fertilized egg.
Reason (R): A monocot embryo comprises embryonal axis with two cotyledons.

Question. Assertion (A): Characteristics of parental plants can be preserved through asexual reproduction.
Reason (R): Vegetative reproduction involves only mitosis.

Question. Assertion (A): Sexual reproduction increases genetic diversities and plays a role in origin of new species.
Reason (R): Sexual reproduction involves formation of gametes and fusion of gametes.

Question. Assertion (A): Plasmodium reproduces by multiple fission.
Reason (R): Multiple fission is a type of asexual reproduction.

Question. Assertion (A): Unisexual flowers have separate male and female flowers whereas a typical monocot embryo comprises an embryonal axis with single cotyledon.
Reason (R): Cucumber, pumpkin and water melon are example of unisexual flowers.

Question. Assertion (A): Amoeba reproduces by binary fission.
Reason (R): All unicellular organisms reproduce asexually.

Question. Assertion (A): In human male, testes are extraabdominal organs which are present inside scrotum.
Reason (R): Scrotum has a relatively lower temperature needed for the production and storage of sperms.

Question. Assertion (A): DNA copying is necessary during reproduction.
Reason (R): DNA copying leads to the transmission of characters from parents to offspring.

Question. Assertion (A): Plants are vegetatively propagated even though they bear or not bear seeds.
Reason (R): Potatoes reproduces through tubers, apples by cutting etc.

Question. Assertion (A): At puberty, in boys, voice begins to crack and thick hair grows on face.
Reason (R): At puberty, there is decreased secretion of testosterone in boys.

Question. Assertion: Fertilization results in formation of zygote.
Reason: Zygote divides several times to form an embryo.

Case-based MCQs :

Read the following passage and answer the questions given below:

The growing size of the human population is a cause of concern for all people. The rate of birth and death in a given population will determine its size. Reproduction is the process by which organisms increase their population. The process of sexual maturation for reproduction is gradual and takes place while general body growth is still going on. Some degree of sexual maturation does not necessarily mean that the mind or body is ready for sexual acts or for having and bringing up children. Various contraceptive devices are being used by human beings to control the size of population.

Question. Common sign of sexual maturation in girls is:
(A) Low pitch voice
(B) Appearance moustache and beard
(C) Development of mammary gland
(D) Broadening of shoulders

Question. Which contraceptive method changes the hormonal balance of the body?
(A) Condoms
(B) Diaphragms
(C) Oral pills
(D) Both (A) and (B)

Question. What are common signs of sexual maturation in boys ?
(A) Broadening of shoulders
(B) Development of mammary glands
(C) Broadening of waist
(D) High pitch of voice

Question. Which of these factor determines the size of a population?
(A) Birth rate
(B) Death rate
(C) Both (A) and (B)
(D) None of these

Study the diagram given below and answer the questions given below:

Question. An organism capable of reproducing by two asexual reproduction methods one similar to the reproduction in yeast and the other similar to the reproduction in Planaria is:
(A) Spirogyra
(B) Hydra
(C) Bryophyllum
(D) Paramecium

Question. Identify the above process.
(A) Binary fission
(B) Budding
(C) Fragmentation
(D) Regeneration

Question. Which organism uses the above method for reproduction?
(A) Yeast
(B) Amoeba
(C) Spirogyra
(D) Leishmania

Study the process depicted in the picture given below and answer the questions given below:

Question. In multiple fission :
(A) Two daughter cells are produced.
(B) Many daughter cells are formed simultaneously.
(C) Two types of gametes fuse together
(D) None of these

Question. Which of the following statement is correct about the above type of reproduction?
(A) It involves two individuals.
(B) It involves a mature parent cell.
(C) It involves union of two types of gametes.
(D) All of these

Question. Which of these organisms divides by the above process?
(A) Amoeba
(B) Spirogyra
(C) Leishmania
(D) Yeast

Question. Which of these statement is correct about the fission in Leishmania?
(A) Splitting into two cells during division can take place in any plane.
(B) Binary fission occurs in a definite orientation in relation to the whip like structure.
(C) Both of these
(D) None of these

Study the given diagram and answer the questions given below:

Question. The above diagram depicts:
(A) Spore formation in Rhizopus
(B) Fragmentation in Spirogyra
(C) Binary fission in Amoeba
(D) Spore formation in Yeast

Question. On maturation sporangia of given organism bursts and releases :
(A) Pollens
(B) Spores
(C) Seeds
(D) None of these

Question. ‘Blobs’ that develop at the tips of the nonreproductive thread is known as :
(A) Hyphae
(B) Sporangia
(C) Spores
(D) Pollens

Question. The thread like non-reproductive structures is :
(A) Hyphae
(B) Rhizoids
(C) Sporangium
(D) Sporangiophores

The given diagram represent the structure of a flower. Study the structure and answer the questions given below :

Question. Which of these is the function of part labelled as C?
(A) Contains ovules which develop into seeds.
(B) Attracts pollinators.
(C) Protect rising buds.
(D) Receive pollens

Question. When an insect sits on the flower of a plant then some particles from the little stalks in the flowers sticks to its body and when this insect sits on the flower of another plant, the particles get deposited in that flower. What are these particles?
(A) Dust
(B) Pollens
(C) Grains
(D) Seeds

Question. The labels A, B and C are
(A) Anther, Style and Ovary respectively.
(B) Stamen, Stigma and Ovule respectively.
(C) Anther, Style and Stigma respectively.
(D) Stamen, Fragment and Ovary respectively.

Question. A student decides to study the impact of removing certain flower parts on fruit formation in plant species X. He chooses three separate plants that are growing in the same plot under uniform conditions. The data is given in the table below.

Which of the following can be inferred from the above data?
(A) Anthers and stigmas are crucial in sexual reproduction in species X.
(B) Pollen grains are probably unable to germinate if they land on other parts of the carpel besides the stigma.
(C) Species X is likely to be wind-pollinated.
(D) Species X relies completely on crosspollination.

Study the diagram and answer the questions given below:

Question. The importance of the part “C” is :
(A) It carries female gametes.
(B) It carries male gametes.
(C) It carries food for the seeds.
(D) None of these

Question. What happens to the part marked ‘D’ after fertilization is over?
(A) Converted into seed.
(B) Converted into fruit
(C) Converted into embryo
(D) Converted into flower.

Question. The part labelled as A in the diagram is:
(A) Dust
(B) Germs
(C) Pollen
(D) Pollinators

Question. Which of the following statement is incorrect about pollination?
(A) It precedes fertilization.
(B) It follows fertilization.
(C) It brings male and female gametes closer.
(D) It introduces variations in plants.

Study the diagram given below and answer the questions that follow:

Question. The role of part labelled as B is:
(A) Transport of male gametes to the ovary.
(B) Transport of female gametes to the ovary
(C) Contains ovules which develop into seeds.
(D) All of these

Question. What happens to the label A which falls on a suitable stigma?
(A) Pollen grain gradually disintegrates.
(B) Pollen grain directly reaches the embryo sac.
(C) Pollen grain starts germinating and forms a pollen tube.
(D) Pollen grain changes into ovules and then to fruit.

Question. How many male gametes are produced by each pollen grain?
(A) One
(B) Two
(C) Three
(D) Four

Question. In the given diagram showing the carpel of an insect pollinated flower, the most likely reason for the non-germination of pollen grain Z is :

(A) Pollen grains X and Y were brought to the stigma earlier, therefore, their germination inhibited the germination of pollen grain Z.
(B) Pollen grain Z was brought to the flower by wind, while pollen grains X and Y were brought to the flower by insects.
(C) Pollen grain Z lacks protrusions that allow it to adhere properly onto the stigma surface.
(D) Pollen grain Z comes from a flower of an incompatible species.

Short Answer type Questions :

Question. What is sporangium? What is its function?

Question. What is the function of testosterone?

Question. Name the method of reproduction in which a new plant grows from the leaf or stem or root.

Question. Why is sex determination prohibited?

Question. How do malarial parasites reproduce?

Question. How can we raise plants which have lost the capacity to produce seeds?

Question. Why are two cells similar but not identical?

Question. How can we prevent release of egg from the ovaries?

Question. What is meant by calyx?

Question. What is variation?

Question. Why male – female sex ratio is is irregular?

Question. Name a unicellular and a multicellular organism which reproduces by budding.

Question. What are bisexual flowers?

Question. What is the opening of uterus called?

Question. Name the large non-motile germ cell which stores food.

Question. What is the role of testis?

Question. Which food component in a cell is responsible for altered body design?

Question. What is the importance of variation?

Question. A bud develops as an outgrowth at one specific site due to repeated cell division. The same develop into tiny individual. Name the process and the organism where it takes place.

Question. Why is it using of copper T not advisable?

True / False :

Question. The ovulation takes place 10-12 days after the start of menstruation.  

Question. In Spirogyra, asexual reproduction takes place by fragmentation.  

Question. In human-beings, male can produce sperms upto the age of 45-50 years. 

Question. Before cell division copying of DNA is not essential.  

Question. The ovary of a flower grows into a fruit.  

Question. Basic event in reproduction is creation of DNA copy.  

Question. In fission, many bacteria and protozoa simply divide into two or more daughter cells.  

Question. The male germ-cell produced by pollen grain contains half the amount of DNA as compared to the other body cells of the plant.   

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