Biology - Questions and Answers, General Study (GK)

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691.

Monozygotic twins are

(a)Never of the same sex

(b)Sometimes of the same sex

(c)Usually of the same sex

(d)Always of the same sex

Comment

Answer is: D

692.

Agents that cause birth defects are

(a)Pathogens

(b)Abortogens

(c)Teratogens

(d)Mutagens

Comment

Answer is: C

693.

Following fertilisation, implantation usually occurs

(a)Within 1-3 days

(b)After 4 days

(c)Almost immediately

(d)Between 12 and 24 hours

Comment

Answer is: B

694.

When a child is born, its blood

(a)Reverses its flow through the heart

(b)Carries wastes for the first time

(c)Flows for the first time

(d)Ceases to pass from one atrium to the other

Comment

Answer is: D

695.

The possibility of fraternal twins occurs

(a)Subsequent to fertilisation

(b)At the fertilisation stage

(c)At conception

(d)At the zygotic stage

Comment

Answer is: B

696.

The operation to sterilize males is called

(a)Spermctomy

(b)Vasectomy

(c)Gametectomy

(d)Hysterotomy

Comment

Answer is: B

697.

Bull semen for the purpose of artificial insemination is stored in

(a)Ice

(b)Liquid carbon dioxide

(c)Liquid nitrogen

(d)Liquid oxygen

Comment

Answer is: C

698.

Every living individual, born, through sexual reproduction, is single-celled in its earliest life history. This cell is called

(a)Gamate

(b)Azygospore

(c)Zygote

(d)Zygospore

Comment

Answer is: C

699.

Some plants flower only once in their lifetime. They are called

(a)Monogamous

(b)Monogenic

(c)MonomorPhic

(d)Monocarpid

Comment

Answer is: D

700.

Which one of the following plants has the largest flower ?

(a)Rafflesia

(b)Sunflower

(c)Zinnia

(d)Chrysanthemum

Comment

Answer is: A

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Biology - Questions and AnswersPage 70

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