Free Printable science 2nd

1.

Which organ controls the bodily actions?

a)

brain

b)

heart

c)

kidneys

d)

lungs

2.

It processes information and sends instructions

a)

blood

b)

muscle

c)

heart

d)

brain

3.

Which of the following protects the brain from injury?

a)

leg

b)

ribs

c)

skull

d)

thigh

4.

Which of the following protects the lungs and heart?

a)

arms

b)

skull

c)

rib cage

d)

spinal column

5.

It is considered as the pumping organ of the body. It is the size of your fist.

a)

brain

b)

heart

c)

kidney

d)

lungs

6.

Which of the following statements describe terrestrial animals?

a)

they live both on lands and in waters.

b)

they live in the forest, grasslands, and deserts.

c)

they live in the oceans, seas, ponds, and rivers.

d)

they live in the soil, streams, and in the farm.

7.

When animals are removed from their natural habitat, they will __________.

a)

die

b)

have another body structure for adaptation.

c)

increase in number

d)

not be affected

8.

Why do birds and fowls differ in beaks and bills?

a)

depending on the food they eat

b)

depending on the kind of their feathers

c)

depending on their size

d)

due to birth

9.

Turtles use their shells when there is danger. Snakes have poison in their fangs. What do these statements suggest?

a)

different animals have body parts for eating

b)

different animals have body parts for movement

c)

different animals have body structure for protection.

d)

different animals have different body parts.

10.

An animal has big hind legs. Which of the following movement can it do?

a)

flying

b)

running

c)

hopping

d)

walking

11.

Which of the following plants have hairs on its stem?

a)

San Francisco

b)

Santol

c)

Cogon

d)

Gumamela

12.

Which of the following plants grow in water?

a)

Lotus

b)

Santol

c)

Sampaguita

d)

Durian

13.

A farmer planted his field with corn and sugarcane. When removing weeds, he wears shirts with long sleeves so that his skin won’t brush against the leaves of the plants. What do these plants have which protect them from enemies?

a)

hair-like structures.

b)

leaves that taste bitter.

c)

bad smell that sticks to the skin.

d)

leaves have thorns.

14.

What is the function of the roots of orchid plants?

a)

Absorb nutrients from the tree.

b)

Absorb water and minerals from the air.

c)

Absorb water and nutrients from the ground.

d)

Absorb oxygen from the air.

15.

Which of the following animals undergo complete metamorphosis?

a)

bird

b)

butterfly

c)

cockroach

d)

grasshopper

16.

Which of the following animals undergo incomplete metamorphosis in their life cycle?

a)

cockroaches and grasshoppers

b)

cats and dogs

c)

flies and mosquitos

d)

butterflies and dragonflies

17.

Which of the following is an egg-laying animal?

a)

dog

b)

frog

c)

monkey

d)

elephant

18.

Cockroaches undergo different stages in their life cycle except one. What is it?

a)

adult

b)

egg

c)

nymph

d)

pupa

19.

Which is the correct order in the stages of Human Life Cycle?

a)

adulthood adolescence childhood birth infancy

b)

birth infancy childhood adolescence adulthood

c)

adolescence childhood adulthood infancy birth

d)

childhood adolescence infancy birth adulthood

20.

What component does air have that is essential for living things to

survive?

a)

carbon dioxide

b)

ammonia

c)

oxygen

d)

nitrogen

21.

In what way air pollution affects the plants?

a)

Protects the plants from being eaten by the animals.

b)

Slow down the growth of the plants.

c)

Makes plant good for animals to eat.

d)

Source of organic fertilizer for the plants

22.

Which of the following makes sunlight important for a housewife?

a)

Source of energy to make food.

b)

Helps dry the palay.

c)

Makes the ground dry.

d)

Dries the newly washed clothes.

23.

Animals like carabaos and goats are examples of______________.

a)

decomposers

b)

primary consumers

c)

tertiary consumers

d)

secondary consumers

24.

What is the study on the interaction of living things with one another and with its environment?

a)

Population

b)

Community

c)

Ecosystem

d)

Ecology

25.

What do you call the type of interaction where both organisms benefit from each other?

a)

Parasitism

b)

Commensalism

c)

Mutualism

d)

Competition

26.

They consist mainly of green plants and grasses which make food

through the process of photosynthesis.

a)

Sun

b)

Consumers

c)

Producers

d)

Decomposers

27.

These are non-living components in an ecosystem such as water, carbon dioxide, and other minerals which plants need in order to produce food and grow.

a)

Sun

b)

Abiotic substance

c)

Secondary

d)

Primary Consumer

28.

Which of the following examples of living things in an ecosystem show mutualism?

a)

Dog and cat

b)

Chicken and corn kernels

c)

Carabao and cow

d)

Ants and aphids

29.

You put twelve big fishes in an aquarium which contains three gallons of water. You fed them with the right amount of food. After five days, some of the fishes died. Why did it happen?

a)

The aquarium did not have enough temperature.

b)

The smelly and cloudy water in the aquarium was not replaced.

c)

There was no enough space for the fishes and they compete for food.

d)

The aquarium was not moved to another place.

30.

What will happen if there are more predators than preys in an ecosystem?

a)

Other animals will also increase in number.

b)

The source of food will decrease.

c)

The source of food will increase.

d)

The source of food will remain the same.

31.

In the relationship between the hawk and the chick, the hawk is n considered as the prey.

a)

true

b)

false

32.

Competition is an ecological relationship wherein two or more organisms compete for common resources such as food, water, shelter, and sunlight in order to live.

a)

true

b)

false

33.

An ecosystem is man-made and cannot be natural.

a)

true

b)

false

34.

The organism which is being eaten is called a prey.

a)

true

b)

false

35.

The relationship where one is harmed and the other is benefited is called parasitism.

a)

true

b)

false

36.

Predator is the animal that eats the prey.

a)

true

b)

false

37.

Mosquitos bite men so they are parasites.

a)

true

b)

false

38.

The prey benefits while the predator is being harmed or killed in the relationship.

a)

true

b)

false

39.

In parasitism, the one that is harmed is called a host.

a)

true

b)

false

40.

Each organism is a competitor in competition.

a)

true

b)

false

science 2nd

Total questions: 40

Worksheet time: 40mins

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