How do Organisms Reproduce Test

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How do Organisms Reproduce Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

How many chromosomes are present in a ovum of human being?

A
22

B
29

C
21

D
23

Solution

Explanation:

Ovum is the female sex cell, or female gamete; the male gamete is the sperm. A gamete, ovum or sperm, contains half the number of chromosomes found in the body cells of the parent, i.e., the gamete is haploid. In human there are total 46 chromosomes, so human ovum has only 23 chromosomes.
Question 2
1 / -0

Which vegetative part is used in the propagation of bryophyllum?

A
leaf

B
petal

C
root

D
stem

Solution

Explanation:

In the leaves of Bryophyllum meristamatic marginal notches are present. From these meristamatic tissues new plants can develop after coming in contact of soil
Question 3
1 / -0

Which of the following plant is unisexual?

A
water melon

B
Mustard

C
Hibiscus

D
All of these

Solution

Explanation:

The flowers in which either male or female reproductive organs are present.These flowers are called incomplete flowers
Question 4
1 / -0

The specific scientific term for the release of ovum from ovary into body cavity is

A
ovulation

B
Menopause

C
puberty

D
menstrual cycle

Solution

Explanation:

In humans, this event occurs when the de Graaf's follicles rupture and release the secondary oocyte ovarian cells.
Question 5
1 / -0

How many male gametes are released into the embryo sac?

A
2.0

B
4.0

C
1.0

D
3.0

Solution

Explanation:

Pollen tube release 2 male gametes in the embryo sac. Out of thes 2 gametes 1 gamete gets fused with the egg and the other one gets fused with the polar nuclei.
Question 6
1 / -0

Name the body parts which human beings can regenerate.

A
lung, nails

B
hair and nails

C
liver lungs

D
hair liver

Solution

Explanation:

Hair and nails have a protein called keratin which allows them to grow. The process of growing of nails and hair is known as keratinization.
Question 7
1 / -0

Which of the following is not hermaphrodite?

A
earthworm

B
bee

C
leech

D
starfish

Solution

Explanation:

Bees show haplodiploidy.
Question 8
1 / -0

Which of the following is incorrect about self pollination?

A
New varieties cannot be obtained by self pollination

B
the genetic drifts of the breed can be removed

C
repeated self pollination leads to loss of vigour and vitality of species

D
It helps to preserve the parental characters

Solution

Explanation:

Genetic drift cannot be removed by self pollination.
Question 9
1 / -0

Epididymis is the reproductive organ of

A
female

B
both male and female

C
male

D
female of bull

Solution

Explanation:

Epididymis is a tube like structure in the male reproductive system that connects a testicle to the vas deferens
Question 10
1 / -0

Oospores is

A
triploid

B
tetraploid

C
diploid

D
haploid

Solution

Explanation:

Oospores are diploid as they have 2n number of chromosomes.

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How do Organisms Reproduce Test - 1

Result

How do Organisms Reproduce Test - 1

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SHARING IS CARING

Question 1

22

29

21

23

Solution

Question 2

leaf

petal

root

stem

Solution

Question 3

water melon

Mustard

Hibiscus

All of these

Solution

Question 4

ovulation

Menopause

puberty

menstrual cycle

Solution

Question 5

2.0

4.0

1.0

3.0

Solution

Question 6

lung, nails

hair and nails

liver lungs

hair liver

Solution

Question 7

earthworm

bee

leech

starfish

Solution

Question 8

New varieties cannot be obtained by self pollination

the genetic drifts of the breed can be removed

repeated self pollination leads to loss of vigour and vitality of species

It helps to preserve the parental characters

Solution

Question 9

female

both male and female

male

female of bull

Solution

Question 10

triploid

tetraploid

diploid

haploid

Solution

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