PRACTICE TEST 2 -Class 10 -Science-Biology-Chapter 7: How Do Organisms Reproduce

Welcome to your Ncert - class 10- science - Chapter 7 – How Do Organisms Reproduce 2

Which one of the following methods requires two genetically variable individuals to produce the progeny?

Budding

Cutting

Goatee

Layering

None

A narrow waistline, wide hip and oily skin are the secondary signs of puberty in:

Females

Not gender-based

Males

Both A and B

None

What could be the reasons for adopting contraceptive methods?

To prevent sexually transmitted diseases.

To maintain the population size by preventing unwanted pregnancies.

All of the above

To maintain the distance between two children and to plan the family size.

None

Which of the following methods of preventing pregnancy, act by changing hormonal balance of the body so that eggs are not released and fertilization cannot occur?

Taking oral pills

Sterilization method

Creating a mechanical barrier

Using Copper-T

None

Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.

(i) Ovary ripens to form seed and ovule ripens to form fruit after fertilization.

(ii) Seed dispersed through water usually develop floating ability in the form of spongy or fibrous outer coat as in coconut.

(iii) Pollination occurs before fertilization.

(iv) Cutting, layering, grafting and tissue culture are the natural methods of vegetative propagation .

(i) F (ii) T (iii) T (iv) T

(i) T (ii) T (iii) T (iv) F

(i) F (ii) F (iii) T (iv) F

(i) F (ii) T (iii) T (iv) F

None

Pollination refers to the:

Transfer of female gametes from anther to stigma.

Transfer of pollen from anther to ovary.

Transfer of pollen from anther to ovule.

Transfer of pollen from anther to stigma.

None

During adolescence, the body of boys and girls undergoes certain changes. Given below are a few of those changes. Find which changes occur in boys:

(a) Broad shoulders

(b) Wider chests

(d) Development of muscles

(e) Development of mammary glands

(f) Growth of facial hair

(g) Acne and pimples on the face

(h) Development of sex organs

(i) High-pitched voice

(j) Growth of pubic hair

Development of mammary glands, acne and pimples on face, development of sex organs, growth of pubic hair.

Broad shoulders, wider chests, development of muscles, growth of facial hair, acne and pimples on face, development of sex organs, growth of pubic hair.

Broadening of the hip region, broad shoulders, wider chests, development of muscles, growth of facial hair.

Broadening of the hip region, broad shoulders, wider chests, development of muscles, growth of facial hair, acne and pimples on the face, development of sex organs, growth of pubic hair.

None

Which of the following statements are true for flowers?

(i) Flowers are always bisexual.

(ii) They are the sexual reproductive organs.

(iii) They are produced in all groups of plants.

(iv) After fertilization they give rise to fruits.

(i) and (iv)

(ii) and (iii)

(ii) and (iv)

(i) and (iii)

None

Organisms in population A, have no genetic variations, and organisms of population B, have genetic variations. Based on this information, choose the correct statement.

Stability cannot be determined from the presence or absence of variations

Both population A and population B are stable.

Population A is more stable than population B.

Population B is more stable than population A.

None

10.

Which one of the following is not associated with reproduction?

A seed growing into a plant.

A new leaf coming out of a tree branch.

A dog giving birth to puppy.

Chick hatching from an egg.

None

11.

Name the process in which thousands of plants can be raised within a limited time and space.

Pathernocarpy

Self pollination

Water

Tissue culture

None

12.

In which process is the number of chromosomes is reduced to half?

Fragmentation

Budding

Mitosis

Meiosis

None

13.

Statement 1 : Unisexual flowers are either staminate flowers or pistillate flowers.

Statement

2 : Both monoecious and dioecious plants have unisexual flowers.

Both statement 1 and 2 are incorrect

Statement 1 is correct but statement 2 is incorrect

Statement 1is incorrect but statement 2 is correct

Both statement 1 and 2 are correct

None

14.

Choose the correct statements about reproduction.

a) Reproduction produces progeny with more or less similar features to the parents.

b) Reproduction occurs by involving one parent (asexual) or two parents (sexual).

c) Budding and fragmentation are the types of asexual reproduction.

d) Reproduction is not observed in non-living organisms.

All except IV

All except I

All except III

All of the above

None

15.

The mode of reproduction that depends on the involvement of two individuals to create a new generation is called:

None of the above

Asexual reproduction

Budding

Sexual reproduction

None

16.

Which of the following is a post fertilization event in flowering plants?

Formation of flower

Embryo development

Formation of pollen grains

Transfer of pollen grains

None

17.

Match the pairs of types of asexual reproduction.

Section-A	Section-B
(1) Fission	(i) Spirogyra
(2) Fragmentation	(ii) Paramecium
(3) Regeneration	(iii) Mucor
(4) Spore formation	(iv) Planaria

1 - ii, 2 - i, 3 - iv, 4 - iii

1 - iv, 2 - iii, 3 - ii, 4 - i

1 - ii, 2 - iii, 3 - iv, 4 - i

1 - iii, 2 - iv, 3 - i, 4 - ii

None

18.

Although organisms die, their kind continues to live on Earth. Which characteristic of living organisms makes this possible?

Excretion

Movement

Reproduction

Respiration

None

19.

The body breaks up into several fragments and each fragment starts to live as a new individual. This type of asexual reproduction is called:

Regeneration

Budding

Fragmentation

Binary fission

None

20.

What is the purpose of combining variations from two or more individuals by sexual reproduction?

To ensure no variants are created.

To create new combinations of variants.

To decrease the chances of survival.

To make DNA copying mechanism accurate.

None

Chapter 5 - Life Process

Chapter 6 -Control and Coordination

Chapter 7: How Do Organisms Reproduce

Chapter 8 :Heredity and Evolution

ASSERTION AND REASON

CASE BASED QUESTIONS

Curriculum

Ncert Class 10 - science - Biology

Chapter 5 - Life Process

Chapter 6 -Control and Coordination

Chapter 7: How Do Organisms Reproduce

Chapter 8 :Heredity and Evolution

ASSERTION AND REASON

CASE BASED QUESTIONS

PRACTICE TEST 2 -Class 10 -Science-Biology-Chapter 7: How Do Organisms Reproduce