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10- How do organisms reproduce -1

Total questions: 15

Worksheet time: 9mins

Name
Class
Date
1.

What is Variation?

a)

Noticeable change in 2 different species

b)

It is the copying during reproduction is important for maintaining the body designs of different organisms to survive in the existing environment.

c)

It refers to the visible difference between two individuals or among a group of individuals or species.

2.

The number of chromosomes in parents and offsprings of a particular species remains constant due to:

a)

(a) Doubling of chromosomes after zygote formation

b)

(b) Halving of chromosomes during gamete formation

c)

(c) Doubling of chromosomes after gamete formation

d)

(d) Halving of chromosomes after gamete formation

3.

An organism capable of reproducing by two asexual reproduction methods one similar to the reproduction in yeast and the other similar to the reproduction in Planaria is:

a)

(a) Spirogyra

b)

(b) Hydra

c)

(c) Bryophyllum

d)

(d) Paramecium

4.

Which out of the following processes does not lead to the formation of clones:

a)

(a) Fertilisation

b)

(b) Fission

c)

(c) Tissue culture

d)

(d) Fragmentation

5.

What process happens when a small root and a plant begin to grows out of a seed?

a)

Cone

b)

Cycle

c)

Flower

d)

Germination

6.

What process happens when pollen falls on a flower's pistil?

a)

Pollination

b)

Pollen

c)

Maturity

d)

Fertilization

7.

Which letter points to the petals?

a)

A

b)

B

c)

C

d)

D

8.

The part of a flower that contains the ovary and the ovule.

a)

Anther

b)

Stamen

c)

Petals

d)

Pistil

9.

The seeds of a flower are produced in the ____________.

a)

Pistil

b)

Ovule

c)

Stamen

d)

Sepal

10.

The _________ cover and protect the flower bud.

a)

Petals

b)

Stamen

c)

Sepals

d)

Anther

11.

1. In a flower, the parts that produce male and female gametes are-

a)

Stamen and anther

b)

Filament and style

c)

Anther and ovary

d)

Stamen and style

12.

1. A feature of reproduction common to amoeba, spirogyra and yeast is

a)

They reproduce asexually

b)

They are unicellular

c)

They reproduce sexually

d)

They are multicellular

13.

1. Vegetative propagation refers to formation of new plants from-

a)

Stem, root, flower

b)

Stem, root, leaves

c)

Stem, fruits, flower

d)

Stem, leaves, flower

14.

1. In Figure, the parts A, B and C are sequentially

a)

cotyledon, plumule and radicle

b)

plumule, radicle and cotyledon

c)

plumule, cotyledon and radicle

d)

radicle, cotyledon and plumule

15.

Offsprings produced by asexual reproduction have greater similarity among themselves because

i. Asexual reproduction involves only one parent

ii. Asexual reproduction does not involve gametes

iii. Asexual reproduction occurs before sexual reproduction

iv. Asexual reproduction occurs after sexual reproduction

a)

i and ii

b)

i and iii

c)

ii and iv

d)

iii and iv