Reproduction in Organisms Test

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Reproduction in Organisms Test - 1

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Question 1
1 / -0

Chromosome number in the daughter cells after meiosis is

A
1/2

B
1/3

C
1/4

D
1/5

Solution

Meiosis is the reductional division in which the number of chromosomes in the daughter cells is reduced to half. Meiosis occurs in germ cells.
Question 2
1 / -0

Identify the wrong pair from the following:

A
Euglena - Binary fission

B
Yeast - Budding

C
Spirogyra -Fragmentation

D
Hydra -Multiple fission

Solution

Hydra reproduces asexually by budding and not by multiple fission.
Question 3
1 / -0

Read the following statements and select the correct option.

A. Wind-pollinated flowers need to produce more quantity of pollen grains.
B. Seeds from cross-pollinated flowers produce weaker and less healthy plants.

A
'A' is false and 'B' is true.

B
'A' is true and 'B' is false.

C
Both 'A' and 'B' are true.

D
Neither 'A' nor 'B' is true.

Solution

Wind-pollinated plants do not invest in resources that attract pollinating organisms, such as showy flowers, nectar, and scent. Instead, they produce larger quantities of light, dry pollen that can be carried by the wind. Seeds from cross-pollinated flowers show greater vigor and genetic variability as compared to self-pollinated flowers.
Question 4
1 / -0

Which of the following statements are correct?

A. Tapeworms are hermaphrodites and undergo self fertilisation.
B. Earthworms are hermaphrodites and undergo self fertilisation.
C. Tapeworms are hermaphrodites but undergo cross-fertilisation.
D. Earthworms are hermaphrodites but undergo cross fertilisation.

A
'A' and 'B' only

B
'A' and 'D' only

C
'B' and 'C' only

D
'C' and 'D' only

Solution

Earthworms are hermaphrodites, i.e. they have both male and female sexual organs. Their sex organs grow at opposite ends of their bodies, making it impossible for one worm to fertilise its own eggs. Similarly, tapeworms are hermaphrodites and mostly undergo cross fertilisation. It is only in a few species, that self-fertilisation may occur between two proglottids of the same worm, or within the same proglottid.
Question 5
1 / -0

What kind of sex-chromosomes are found in male human?

A
only X

B
only Y

C
XX

D
X and Y both

Solution

The sex chromosome of male is XY and that of female is XX.
Question 6
1 / -0

Which one of the following is involved in the formation of endosperm?

A
Antipodal cell

B
Polar nucleus

C
Synergids

D
Eggcell

Solution

Double fertilisation is a complex fertilisation mechanism of flowering plants (angiosperms). Of the two sperm cells, one sperm fertilises the egg cell, forming a diploid zygote; the other sperm fuses with the two polar nuclei, forming a triploid cell that develops into the endosperm.
Question 7
1 / -0

Semen is frozen in

A
liquid nitrogen

B
refrigerator

C
ice

D
All of these

Solution

Semen is frozen in liquid nitrogen. The temperature of liquid nitrogen is -196^oC. The semen is collected and analysed for concentration and total numbers, morphology (normal structure), and motility of sperms.
Question 8
1 / -0

Which of the following statements are correct for MTPs?

(i) MTPs are generally advised during the first trimester.
(ii) MTPs are used as a contraceptive method.
(iii) MTPs are always surgical.
(iv) MTPs require the assistance of qualified medical personnel.

A
(i) and (iii)

B
(ii) and (iii)

C
(i) and (iv)

D
(i) and (ii)

Solution

Medical termination of pregnancy is legally allowed till 20^th week of gestation and it should be carried out under medical supervision.
Question 9
1 / -0

Test tube baby means

A
that fertilisation is external and the subsequent development of zygote is external

B
that fertilisation is internal and the subsequent development of zygote is external

C
that fertilisation is external and the subsequent development of zygote is internal

D
that fertilisation is internal and the subsequent development of zygote is internal

Solution

Test tube baby or in vitro fertilisation is the most effective type of assisted reproductive technology. In this, the egg is fertilised outside the body of the female and then the fertilised egg is implanted in the uterus.
Question 10
1 / -0

The ovum passes down the oviduct by the

A
ciliary movements of the oviduct

B
flagellar movements of the oviduct

C
peristaltic movements of the oviduct muscles

D
Both (1) and (3)

Solution

The ovum is pushed through the oviduct by peristaltic contractions of oviduct muscles and action of cilia.

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Reproduction in Organisms Test - 1

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Reproduction in Organisms Test - 1

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SHARING IS CARING

Question 1

1/2

1/3

1/4

1/5

Solution

Question 2

Euglena - Binary fission

Yeast - Budding

Spirogyra -Fragmentation

Hydra -Multiple fission

Solution

Question 3

'A' is false and 'B' is true.

'A' is true and 'B' is false.

Both 'A' and 'B' are true.

Neither 'A' nor 'B' is true.

Solution

Question 4

'A' and 'B' only

'A' and 'D' only

'B' and 'C' only

'C' and 'D' only

Solution

Question 5

only X

only Y

XX

X and Y both

Solution

Question 6

Antipodal cell

Polar nucleus

Synergids

Eggcell

Solution

Question 7

liquid nitrogen

refrigerator

ice

All of these

Solution

Question 8

(i) and (iii)

(ii) and (iii)

(i) and (iv)

(i) and (ii)

Solution

Question 9

that fertilisation is external and the subsequent development of zygote is external

that fertilisation is internal and the subsequent development of zygote is external

that fertilisation is external and the subsequent development of zygote is internal

that fertilisation is internal and the subsequent development of zygote is internal

Solution

Question 10

ciliary movements of the oviduct

flagellar movements of the oviduct

peristaltic movements of the oviduct muscles

Both (1) and (3)

Solution

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