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Science 2 Revision

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

How has your exams been so far?

a)
b)
c)
d)
7.

The hormone secreted by the testis of the male reproductive system is

a)

LSH

b)

Progesterone

c)

Testosterone

d)

Estrogen

12.

Which of the following reproduces through fragmentation?

a)

Spirogyra

b)

Yeast

c)

Rhizobus

d)

Hydra

4.

I am a metamerically segmented, blood-sucking ectoparasite. I have suckers. Who am I and to which phylum do I belong?

a)

Dog fish, Phylum Chordata

b)

Tapeworm, Phylum Platyhelminthes

c)

Leech. Phylum Annelida

d)

Hydra, Phylum Cnidaria

5.

What does this symbol mean in relation to environment conservation?

a)

We should drink water with our hands

b)

Sustainable use of water is necessary for our future

c)

We should drink rainwater

d)

Wash hands before eating

6.

Which phase shows a notch in the cytoplasm in between the central region?

a)

Prophase

b)

Metaphase

c)

Anaphase

d)

Cytokinesis

7.

The hormone secreted by the testis of the male reproductive system is

a)

LSH

b)

Progesterone

c)

Testosterone

d)

Estrogen

8.

Where is the largest hydroelectric power station located in Maharashtra?

a)

Jayakawadi

b)

Koyna Pofali

c)

Lonavla

d)

Bhira

9.

Which of the following addiction is the most harmful for the nervous system?

a)

Alcohol Consumption

b)

Smoking

c)

Chewing Gutkha

d)

Chewing Tobacco

10.

Which phylum includes organisms with jointed appendages?

a)

Annelida

b)

Arthropoda

c)

Cnidaria

d)

Platyhelmithes

11.

What function does microbe pseudomonas perform?

a)

Cleaning the hydrocarbon and oil pollutants from soil and water

b)

Absorb radiations from radioactive debris

c)

Cause formation of yoghurt

d)

Absorb selenium from soil

12.

Which of the following reproduces through fragmentation?

a)

Spirogyra

b)

Yeast

c)

Rhizobus

d)

Hydra

13.

Identify the organisms and mention the phylum or class to which they belong.

a)

Starfish, Planaria

b)

Starfish, Echinodermata

c)

Starfish, Pisces

d)

Starfish, Cnidaria

14.

What is the function of genetically modified India mustard?

a)

Just provide mustard oil

b)

Absorb selenium from soil

c)

Absorb uranium and arsenic

d)

Absorb radioactive materials

15.

Which period is said to be the period of secretion of glands in the endometrium?

a)

Day 5 to Day 13.

b)

Day 13 to Day 16

c)

Day 16 to Day 28.

d)

Day 1 to Day 4

16.

Which of the following genetically modified flowers absorb Uranium and arsenic from the soil?

a)

Genetically Modified Lily

b)

Genetically Modified Sunflower

c)

Genetically Modified Mustard flower

d)

Genetically Modified Roses

17.

What happens when two solar cells are connected in parallel?

a)

Total current I = I1 =I2I\ =\ I_{1\ }=I_2

b)

Total current I=I_1+I_2

18.

What happens when two solar cells are connected in series?

a)

Total current I = I1 =I2I\ =\ I_{1\ }=I_2

b)

Total current I=I_1+I_2

19.

Identify the organisms and mention the phylum or class to which they belong.

a)

Leech, Phylum - Annelida

b)

Leech, Phylum - Platyhelminthes

c)

Tapeworm, Phylum - Platyhelminthes

d)

Tapeworm, Phylum - Annelids

20.

In the menstrual cycle, which reproductive organs undergo change?

a)

Follicles inside the ovary and the endometrium of the uterus

b)

Testis in the scrotum