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

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

Statement

2 : Both monoecious and dioecious plants have unisexual flowers.

Statement 1 is correct but statement 2 is incorrect

Statement 1is incorrect but statement 2 is correct

Both statement 1 and 2 are correct

Both statement 1 and 2 are incorrect

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

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

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

None

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 III

All except I

All of the above

None

Pollination refers to the:

Transfer of pollen from anther to stigma.

Transfer of pollen from anther to ovule.

Transfer of pollen from anther to ovary.

Transfer of female gametes from anther to stigma.

None

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

Not gender-based

Females

Males

Both A and B

None

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 - iii, 3 - iv, 4 - i

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

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

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

None

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

Budding

Asexual reproduction

Sexual reproduction

None of the above

None

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

Budding

Cutting

Goatee

Layering

None

What could be the reasons for adopting contraceptive methods?

To prevent sexually transmitted diseases.

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

To maintain the population size by preventing unwanted pregnancies.

All of the above

None

10.

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

Formation of flower

Formation of pollen grains

Transfer of pollen grains

Embryo development

None

11.

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

Reproduction

Movement

Respiration

Excretion

None

12.

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

To ensure no variants are created.

To make DNA copying mechanism accurate.

To decrease the chances of survival.

To create new combinations of variants.

None

13.

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

Tissue culture

Self pollination

Water

Pathernocarpy

None

14.

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

Population B is more stable than population A.

Both population A and population B are stable.

Population A is more stable than population B.

None

15.

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

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.

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.

None

16.

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

Fragmentation

Binary fission

Regeneration

Budding

None

17.

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 (iii)

(i) and (iv)

(ii) and (iii)

(ii) and (iv)

None

18.

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

19.

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

Mitosis

Fragmentation

Meiosis

Budding

None

20.

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?

Using Copper-T

Sterilization method

Creating a mechanical barrier

Taking oral pills

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