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Question (21)

QN008189

Which layer is shed during menstruation?

(A) Skin layer
(B) Uterine lining
(C) Muscle tissue
(D) Ovary wall

Correct Answer: B

Explanation:

Uterine lining is shed during menstruation.

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Question (22)

QN008190

If menstruation starts on 10th August in a 28-day cycle, the next cycle is expected around

(A) 24th August
(B) 7th September
(C) 10th September
(D) 20th September

Correct Answer: B

Explanation:

28 days after 10th August is approximately 7th September.

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Question (23)

QN008191

During pregnancy, the embryo gets nourishment from the

(A) stomach
(B) uterus lining
(C) kidneys
(D) lungs

Correct Answer: B

Explanation:

Embryo receives nourishment from the uterus lining.

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Question (24)

QN008192

Implantation refers to

(A) release of egg
(B) sperm production
(C) attachment of embryo to uterus wall
(D) shedding of uterus lining

Correct Answer: C

Explanation:

Implantation is attachment of embryo to uterus wall.

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Question (25)

QN008193

Pregnancy in humans usually lasts about

(A) 3 months
(B) 6 months
(C) 9 months
(D) 12 months

Correct Answer: C

Explanation:

Human pregnancy usually lasts about 9 months.

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Question (26)

QN008194

Which stage follows embryo stage in human development?

(A) Zygote
(B) Foetus
(C) Gamete
(D) Ovule

Correct Answer: B

Explanation:

Foetus stage follows embryo stage.

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Question (27)

QN008195

If one sperm fertilises one egg, the chromosome number in zygote becomes

(A) 23
(B) 46
(C) 92
(D) 12

Correct Answer: B

Explanation:

Zygote contains 46 chromosomes after fertilisation.

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Question (28)

QN008196

In humans, the father determines the sex of the baby because

(A) mother contributes Y chromosome
(B) father contributes either X or Y chromosome
(C) mother contributes both chromosomes
(D) ovary determines sex

Correct Answer: B

Explanation:

Father contributes either X or Y chromosome.

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Question (29)

QN008197

A baby receives an X chromosome from father. The baby will most likely be

(A) male
(B) female
(C) sterile
(D) genetically identical to father

Correct Answer: B

Explanation:

XX combination results in a female child.

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Question (30)

QN008198

Which reproductive method provides greater protection to developing embryo?

(A) Failure of implantation
(B) Presence of petals
(C) Pollination
(D) Spore formation Answer:

Correct Answer: B

Explanation:

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Question (21)

Which layer is shed during menstruation?

Explanation:

Link:

Question (22)

If menstruation starts on 10th August in a 28-day cycle, the next cycle is expected around

Explanation:

Link:

Question (23)

During pregnancy, the embryo gets nourishment from the

Explanation:

Link:

Question (24)

Implantation refers to

Explanation:

Link:

Question (25)

Pregnancy in humans usually lasts about

Explanation:

Link:

Question (26)

Which stage follows embryo stage in human development?

Explanation:

Link:

Question (27)

If one sperm fertilises one egg, the chromosome number in zygote becomes

Explanation:

Link:

Question (28)

In humans, the father determines the sex of the baby because

Explanation:

Link:

Question (29)

A baby receives an X chromosome from father. The baby will most likely be

Explanation:

Link:

Question (30)

Which reproductive method provides greater protection to developing embryo?

Explanation:

Link:

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