Assessment
Directions: Read and understand the statements below and choose the letter of the
best answer. Write the answer in your science activity notebook.
1. In an/a __________, living organisms work along with physical component of a
habitat to maintain life.
A. atmosphere
B. biosphere
C. ecosystem
D. environment
2. It is a component of the environment that includes living organisms.
A. Abiotic
B. Biotic
C. Consumer
D. Producer
3. Which of the following is a biotic component of an ecosystem?
A. Soil
B. Warm sun
C. Water
D. Worm
4. It is a non-living component of an ecosystem.
A. Abiotic
B. Biotic
C. Consumer
D. Decomposer
5. Which of the following is an abiotic component of an ecosystem?
A. Ant
B. Bacteria
C. Oxygen gas
D. Snail
6. It is an abiotic component that is needed by plants and trees to make their own
food.
A. Carbon dioxide
B. Soil
C. Oxygen
D. Temperature
7. It is an abiotic component that is produced by plants through the process of
photosynthesis
A. Oxygen gas
B. Soil
C. Sunlight
D. Water
8. A cow is grazing on the grass under the heat of the sun. From this statement,
which is the producer?
A. Cow
B. Grass
C. Heat
D. Sun
9. It is the biotic component that breaks down chemicals from producers and
consumers into simpler form.
A. Consumer
B. Decomposer
C. Producer
D. Transducer
10.It is an organism that feeds on other organisms because it cannot make its own
food.
A. Consumer
B. Decomposer
C. Producer
D. Transducer
11.The following are abiotic components, EXCEPT __________.
A. heat
B. oxygen
C. water
D. water lily
12.Which of the following best describes the kinds of things that make up an
ecosystem?
A. All living things and non-living things
B. Humans and animals
C. Only living things
D. Plants only
13.Which are examples of abiotic components?
A. chair, desk, window, dog
C. Dinosaur, paper, pencil
B. dog, cat, frog, tree, wood
D. plastic, cup, window, rock
14.The biosphere is the part of the Earth that contains life. Which of the following
is a component of the biosphere?
I. atmosphere
III. water covering most of the planet
II. Earth’s surface
IV. all of the above
A. I only
B. I and II
C. II and III
D. I, II and III
15.Organisms grow in number because of __________.
A. biotic components
C. only abiotic component
B. abiotic components
D. both abiotic and biotic components
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Answer:
1.B
2.C
3.D
4.D
5.A
6.C
7.B
8.D
9.C
10.B
11.A
12.B
13.D
14.C
15.C
Explanation:
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