CBSE Class 10 Biology How do Organisms Reproduce MCQs Set A

Question. In humans, gestation is completed in 
(a) 40 weeks
(b) 60 weeks
(c) 120 weeks
(d) 240 days.

Answer : A

Question. Which of the following diseases is transmitted sexually? 
(a) Sleeping sickness
(b) Jaundice
(c) Elephantiasis
(d) Syphilis

Answer : D

Question. Which of the following is the correct sequence regarding sexual reproduction in a flowering plant? 
(a) Pollination, fertilisation, seedling, embryo
(b) Seedling, embryo, fertilisation, pollination
(c) Pollination, fertilisation, embryo, seedling
(d) Embryo, seedling, pollination, fertilisation

Answer : C

Question. Factors responsible for the rapid spread of bread mould on slices of bread are 
(i) large number of spores
(ii) availability of moisture and nutrients in bread
(iii) presence of tubular branched hyphae
(iv) formation of round shaped sporangia.
Which of the above statements are true?
(a) (i) and (iii)
(b) (ii) and (iv)
(c) (i) and (ii)
(d) (iii) and (iv)

Answer : C

Question. Tissue culture technique is used for 
(a) growing disease free plant
(b) rapid multiplication of plant
(c) multiplication of sterile plants
(d) all of these.

Answer : D

Question. IUCD is for 
(a) vegetative propagation
(b) contraception
(c) increasing fertility
(d) avoiding miscarriage.

Answer : B

Question. Which of the following is not a vegetative propagule? 
(a) Root
(b) Stem
(c) Leaf
(d) Seed

Answer : D

Question. An animal which can reproduce by budding is
(a) Bryophyllym
(b) Yeast
(c) Hydra
(d) All of the above

Answer : C

Question. Male reproductive organ in flowering plant is
(a) Carpel
(b) Stamen
(c) Corolla
(d) Ovary

Answer : B

Question. A fertilized ovule develops into a _____ in an angiosperm plant
(a) seed
(b) fruit
(c) flower
(d) cotyledon

Answer : A

Question. Where are sperms formed in the human body?
(a) Vas deferens
(b) Prostate gland
(c) Ovary
(d) Testis

Answer : D

Question. The place where fertilization take place in the human body is
(a) Uterus
(b) Oviduct
(c) Ovary
(d) vagina

Answer : B

Question. Pre- natal sex determination has been prohibited by law due to
(a) High cost charged by doctors
(b) Possible danger of mother’s health
(c) Increasing cases of female foeticide
(d) Increasing cases of male foeticide

Answer : C

Question. Copper T and Loops are
(a) Contraceptive devices
(b) Conventional devices
(c) Conducive devices
(d) Contaminating devices

Answer : A

Question. An unisexual flower
(a) Do not have carpel
(b) Do not have stamen
(c) Has either carpel or stamen
(d) Has either petal or sepal

Answer : C

Question. _______ is a common tube for urine and sperm in human male.
(a) Urethra
(b) Uterus 
(c) Ureter
(d) None of the above

Answer : A

Question. Eggs starts developing in human female
(a) When she attains puberty
(b) Only after her birth
(c) After the first menstruation
(d) When she is in her mother’s womb

Answer : D

Question. External fertilisation takes place in 
(a) fish and frog
(b) frog and monkey
(c) dog and goat
(d) goat and fish.

Answer : A

Question. DNA copying is necessary during reproduction because 
(a) it leads to the transmission of characters from parents to offsprings
(b) it leads to variation
(c) it helps in survival of the species over time
(d) all of these.

Answer : D

Question. Which of the following plants possess unisexual flowers? 
(a) Watermelon
(b) Hibiscus
(c) Mustard
(d) Both (b) and (c)

Answer : A

Question. The given figure shows the male reproductive system in humans. Select the correct statements regarding the given figure.

(i) Part labelled as Q produces the sperms.
(ii) The hormone testosterone is produce in the part labelled as S.
(iii) Parts labelled as R and S produce secretions that regulate the production of sperms.
(iv) The part labelled as T is called vas deferens which carries the sperms from testis to the urethra.
(v) Part labelled as P serves as the common passage for both sperms and urine.
(a) (i), (ii), (iii) and (v)
(b) (iii), (iv) and (v)
(c) (i), (iv) and (v)
(d) (i), (iii) and (iv)

Answer : C

Question. Which of the following layers of uterus breaks off during menstruation? 
(a) Epimetrium
(b) Myometrium
(c) Endometrium
(d) Perimetrium

Answer : C

Question. Which of the following match is correct? 
(a) Cotyledon – Food store
(b) Plumule _ Future shoot
(c) Radicle – Future root
(d) All of these

Answer : D

Question. Match the columns and select the correct option from the given codes. 
     Column I        Column II
A. Parturition  (i) The act of expulsion of fully grown foetus from mother’s uterus
B. Menopause (ii) Release of one ovum from one of the ovaries every month
C. Gestation   (iii) Phase during which menstruation ceases
D. Ovulation   (iv) Complete development of the fetus inside the womb
(a) A - (iv), B - (ii), C - (i), D - (iii)
(b) A - (i), B - (iii), C - (iv), D - (ii)
(c) A - (iv), B - (iii), C - (i), D - (ii)
(d) A - (i), B - (ii), C - (iv), D - (iii)

Answer : B

Question. Identify the parts labeled 1 and 2 in the given figure. 

(a) 1- micropyle, 2- epicotyl
(b) 1- cotyledon, 2- embryo
(c) 1-radicle , 2-plumule
(d) 1-plumule, 2-radicle

Answer : D

Question. Which of the following is celebrated as “World AIDS Day”? 
(a) September 1
(b) October 1
(c) November 1
(d) December 1

Answer : D

Question. Which of the following statements are incorrect about puberty? 
(i) Body shows starting of sexual maturity at this stage.
(ii) The rate of general body growth begins to proceed faster as the reproductive tissues begin to mature.
(iii) Changes taking place in the body parts are different in boys and girls.
(iv) All the changes during puberty takes place very fast.
(a) (iii) and (iv)
(b) (ii) and (iv)
(c) (i), (ii) and (iii)
(d) (i), (ii), (iii) and (iv)

Answer : B

Question. The number of chromosomes in parents and offsprings of a particular species remains constant due to 
(a) doubling of chromosomes before zygote formation
(b) halving of chromosomes during gamete formation
(c) doubling of chromosomes during gamete formation
(d) halving of chromosomes after gamete formation.

Answer : B

Question. Which of the following organisms does not depend on reproduction to exchange genetic material? 
(a) Lion
(b) Papaya
(c) Bacterium
(d) Cockroach

Answer : C

Question. Which of the following is a sexually transmitted viral disease? 
(i) Gonorrhoea
(ii) Syphilis
(iii) Warts
(iv) HIV-AIDS
(a) (i), (iii) and (iv)
(b) (ii) and (iv)
(c) (iii) and (iv)
(d) (i) and (ii)

Answer : C

Short Answer type Questions :

Question. What are sexually transmitted diseases?
Answer: Diseases spread through sex organs are called sexually transmitted disease.( STDs)

Question. Which is the site of fertilization in human body?
Answer: Fallopian tube

Question. What are the parts of a pistil?
Answer: Stigma, style and ovary

Question. How is the waste produced by an embryo eliminated?
Answer: The waste produced by an embryo eliminated through placenta to mothers body

Question. What is parturition?
Answer: Childs birth take place after rhythmic contraction and relaxation of uterus is called parturition

Question. Is reproduction a life process?
Answer: No, because reproduction is not necessary to maintain the life of an individual organism.

Question. Name the structure which cover testis.
Answer: Scrotum

Question. What are the parts of a seed?
Answer: Cotyledon, plumule and radicle

Question. Expand IUCD
Answer: Intra uterine contraceptive device

Question. What does a stamen consist of?
Answer: Filament and anther

Question. Name the hormones secreted by ovaries.
Answer: Oestrogen, progesterone

Question. What is vas deferens?
Answer: Sperm duct which carry sperms from the testis

Question. What is the dark green filamental structure present on the surface of water? How does it reproduce?
Answer: Algae, which reproduces by fragmentation

Question. Give examples of monocot and dicot seeds.
Answer: ♦ Monocot seeds - rice, wheat
 ♦ Dicot seeds - ground nut, peas

Question. Name the types of contraceptive methods.
Answer: Physical barrier, chemical method and surgical method

Question. How many ovum are found in each ovule?
Answer: One ovum is found in each ovule

Question. Why does uterus become thick and spongy?
Answer: To receive embryo and nourish it.

Question. Name the methods of contraception in which physical barrier are used.
Answer: Condom in male and copper T in female

Question. Which part of the flower turns into (i) seed (ii) Fruit?
Answer: Ovule turns into seed and ovary turns into fruit

Question. Name any two bacterial disease spread through sexual act.
Answer: Syphilis, gonorrohea

Question. What will happen to the petals, sepals, stamen, style and stigma of a flower after fertilization?
Answer: All the parts will fall off

Question. What are AIDS and Warts?
Answer: Sexually transmitted viral diseases

Question. What do you mean by corolla?
Answer: Petals are collectively called corolla