Living Things and Environment Practice Questions
K-12 (Philippines) · K-12 Science · 148 free MCQs with instant results and detailed explanations.
148
Total
44
Easy
74
Medium
30
Hard
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Sample Questions from Living Things and Environment
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
Which of the following is NOT a characteristic of living things?
A.
Growth
B.
Respiration
C.
Ability to move
D.
Reproduction
Show Answer & Explanation
Correct Answer: C
While many living things can move, not all can, such as plants. Growth, respiration, and reproduction are universal characteristics of all living organisms.
Q2
Easy
What type of habitat would be best suited for a cactus?
A.
Tropical rainforest
B.
Desert
C.
Wetland
D.
Temperate forest
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Correct Answer: B
Cacti are adapted to arid environments with low water availability, making deserts the ideal habitat for them.
Q3
Easy
Which of the following is NOT a characteristic of living things?
A.
Reproduction
B.
Growth
C.
Photosynthesis
D.
Response to stimuli
Show Answer & Explanation
Correct Answer: C
Photosynthesis is a process carried out by some living things (like plants) to convert light energy into chemical energy, but it is not a necessary characteristic of all living things. The other options are fundamental characteristics shared by all living organisms.
Q4
Medium
Which of the following is NOT a characteristic of living things?
A.
Growth and development
B.
Response to stimuli
C.
Ability to move independently
D.
Reproduction
Show Answer & Explanation
Correct Answer: C
Living things do not need to move independently. Some organisms, like plants, may not move at all but still exhibit growth, response to stimuli, and reproduction.
Q5
Medium
What process do plants primarily use to convert sunlight into food?
A.
Respiration
B.
Photosynthesis
C.
Transpiration
D.
Fermentation
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Correct Answer: B
Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen, thus creating their own food.
Q6
Medium
Which of the following ecosystems is characterized by the highest biodiversity?
A.
Desert
B.
Tropical rainforest
C.
Grassland
D.
Tundra
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Correct Answer: B
Tropical rainforests have the highest biodiversity due to their warm climate, abundant rainfall, and a wide variety of plant and animal species.
Q7
Medium
If an organism is classified as a decomposer, what role does it play in the ecosystem?
A.
Producing food for consumers
B.
Breaking down dead organisms
C.
Competing for resources with plants
D.
Providing energy to herbivores
Show Answer & Explanation
Correct Answer: B
Decomposers break down dead organic material, returning nutrients to the soil and helping to recycle matter within the ecosystem.
Q8
Hard
Which of the following statements best explains the role of decomposers in an ecosystem?
A.
Decomposers recycle nutrients by breaking down dead organic matter.
B.
Decomposers compete with producers for sunlight.
C.
Decomposers primarily feed on living plants and animals.
D.
Decomposers are responsible for photosynthesis in ecosystems.
Show Answer & Explanation
Correct Answer: A
Decomposers, such as fungi and bacteria, play a crucial role in ecosystems by breaking down dead organic matter, recycling nutrients back into the soil. This process supports plant growth and maintains the balance of the ecosystem.
Q9
Hard
In an experiment, a student observes that plants grow taller when given a specific type of fertilizer compared to those that receive no fertilizer. Which scientific principle is primarily demonstrated by this observation?
A.
Photosynthesis rate
B.
Plant growth factors
C.
Ecosystem balance
D.
Predation impact
Show Answer & Explanation
Correct Answer: B
This observation demonstrates the principle of plant growth factors, specifically that fertilizer provides essential nutrients that promote growth. The increase in height compared to the control group indicates the fertilizer's effectiveness as a growth factor.
Q10
Hard
Which of the following processes is primarily responsible for the conversion of light energy into chemical energy in plants?
A.
Respiration
B.
Photosynthesis
C.
Transpiration
D.
Fermentation
Show Answer & Explanation
Correct Answer: B
Photosynthesis is the process through which plants convert light energy from the sun into chemical energy stored in glucose. This process occurs in the chloroplasts of plant cells and is essential for plant growth and energy production.
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Living Things and Environment — K-12 (Philippines) K-12 Science Practice Questions Online
This page contains 148 practice MCQs for the chapter Living Things and Environment in K-12 (Philippines) K-12 Science. The questions are organized by difficulty — 44 easy, 74 medium, 30 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.