CLASS: X NCERT (CBSE)

BIOLOGY

How do Organisms Reproduce

Question 1: The male hormone testesterone is produced by _________.

1. Leydig cells

2. Seminiferous tubules

3. Epididymis

4. Vas deferens

Answer: 1

Question 2: Male gonads are called _______________.

1. testes

2. ovaries

3. scrotal sacs

4. sperm duct

Answer: 1

Question 3: The fertilized egg is called ______________.

1. ovum

2. blastocyst

3. diploid cell

4. zygote

Answer: 4

Question 4: The ultimate stoppage of menstrual cycle is called _______.

1. puberty

2. menarche

3. menopause

4. old age

Answer: 3

Question 5: The process by which the sperms are produced is known as ____________.

1. ovulation

2. spermatogenesis

3. oogenesis

4. gestation

Answer: 2

Question 6: The tube that carries the sperms out of the testes is the __________________.

1. vasa efferentia

2. vas deferens

3. oviduct

4. epididymis

Answer: 2

Question 7: The process by which the sperms are released is called __________________.

1. spermatogenesis

2. oogenesis

3. ovulation

4. ejaculation

Answer: 4

Question 8: The external genitalia in females is called ____________.

1. pubis

2. vagina

3. vulva

4. clitoris

Answer: 3

Question 9: Sterilisation in males is called as _____________.

1. tubectomy

2. vasectomy

3. IVF

4. GIFT

Answer: 2

Question 10: Binary fission is seen in __________________.

1. plasmodium

2. hydra

3. amoeba

4. mucor

Answer: 3

Question 11: The endosperm nucleus is _______________.

1. haploid

2. diploid

3. triploid

4. tetraploid

Answer: 3

Question 12: The fertilization of human egg by the sperms takes place in __________________.

1. ovary

2. oviduct

3. vagina

4. uterus

Answer: 2

Question 13: Pollen tube contains _____________.

1. one male nucleus

2. two male nuclei

3. three male nuclei

4. four male nuclei

Answer: 2

Question 14: If the pollen is transferred to the stigma of the same flower, it is called __________.

1. allogamy

2. autogamy

3. cross pollination

4. double fertilization

Answer: 2

Question 15: Pollen grains are produced by ________________.

1. ovary

2. filament

3. stigma

4. anther

Answer: 4

Question 16: The collective name for sepals is _______________.

1. androecium

2. gynoecium

3. corolla

4. calyx

Answer: 4

Question 17: The individual units of corolla are called __________.

1. petals

2. sepals

3. stamens

4. pistils

Answer: 1

Question 18: The attachment of the embryo to the uterus is called ____________________.

1. gestation

2. fertilisation

3. implantation

4. menstruation

Answer: 3

Question 19: The onset of the reproductive age is called _____________.

1. menstruation

2. menarche

3. menopause

4. puberty

Answer: 4

Question 20: The first time that the monthly bleeding occurs is called __________________.

1. maturity

2. menarche

3. menopause

4. puberty

Answer: 2

Question 21: The most important part of the plant for continuation of the life of the species is _____.

1. stem

2. root

3. flower

4. leaf

Answer: 3

Question 22: The type of vegetative propagation seen in chrysanthemum is ________________.

1. runner

2. sucker

3. stolon

4. offset

Answer: 2

Question 23: Successfully grafted plants bear the flowers and fruits characteristic of the _______.

1. scion

2. stock

3. either scion or stock

4. a mixture of scion and stock

Answer: 1

Question 24: Sugarcane is normally grown by ______________.

1. cutting

2. grafting

3. layering

4. seeds

Answer: 1

Question 25: Unequal daughter cells are produced in _______________.

1. fragmentation

2. sporulation

3. fission

4. budding

Answer: 4

Question 26: Vegetative propogation in sweet potato is by ___________.

1. stem

2. root

3. leaf

4. none of the above

Answer: 2

Question 27: Vegetative propogation in Bryophyllum is by ___________.

1. stem

2. root

3. leaf

4. none of the above

Answer: 3

Question 28: An example of a hermaphrodite is ___________.

1. frog

2. fish

3. earthworm

4. hydra

Answer: 3

Question 29: Multiple fission is seen in ___________.

1. yeast

2. paramoecium

3. plasmodium

4. rhizopus

Answer: 3

Question 30: Progesterone is secreted by ________________.

1. ovarian follicle

2. Graffian follicle

3. Corpus luteum

4. Corpus albicans

Answer: 3

Question 31: The hormone secreted by the pituitary to start the ovulation process is ___________.

1. FSH

2. Luteinizing hormone

3. Oestrogen

4. Progesterone

Answer: 2

Question 32: Sperms are produced at a temperature that is ________the body temperature.

1. same as

2. lower than

3. higher than

4. immaterial to

Answer: 2

Question 33: The part of the sperm that contains the lytic enzymes is ____________________.

1. acrosome

2. nucleus

3. mid-piece

4. tail

Answer: 1

Question 34: The life span of the sperm is ______________.

1. 2 days

2. 1-3 days

3. 1-3 weeks

4. 7 days

Answer: 2

Question 35: The sperms are temporarily stored in ___________.

1. vas deferens

2. vas efferens

3. epididymis

4. bladder

Answer: 3