P6 Science · Chapter 13brightbit.net/worksheets
Plants & the Environment
Name: ______________________Class: ________Date: ____________Score: ____ / 10
- 1.
Plants help the environment by releasing which gas during photosynthesis?
(a) Carbon dioxide(b) Nitrogen(c) Oxygen(d) Hydrogen
- 2.
How do the roots of plants help prevent soil erosion?
(a) They make the soil wetter(b) They hold the soil together and prevent it from being washed away(c) They push rocks deeper into the ground(d) They attract earthworms to the surface
- 3.
Trees provide shade, which helps to —
(a) Increase air pollution(b) Cool the surrounding area by blocking direct sunlight(c) Make the soil drier(d) Reduce oxygen in the air
- 4.
When trees are cut down on a hillside, what is MOST LIKELY to happen when it rains heavily?
(a) The hill becomes stronger(b) Soil is washed away easily, causing landslides(c) More plants will grow immediately(d) The rain will stop falling on that hill
- 5.
Plants absorb carbon dioxide from the air. Why is this important for the environment?
(a) It makes the air smell better(b) It helps reduce the amount of greenhouse gas in the atmosphere(c) It produces more carbon dioxide(d) It has no effect on the environment
- 6.
Name one way plants help to reduce flooding.
- 7.
Mangrove trees growing along coastlines help protect the land by —
(a) Making the sea warmer(b) Acting as a barrier against strong waves and storms(c) Removing sand from the beach(d) Attracting more rain
- 8.
Why are forests sometimes called the 'lungs of the Earth'?
(a) Because forests look like lungs from above(b) Because forests produce large amounts of oxygen and absorb carbon dioxide(c) Because forests are warm and moist like lungs(d) Because forests make breathing sounds in the wind
- 9.
In a city, planting more trees along streets can help reduce —
(a) The number of buildings(b) Air pollution and temperature(c) The amount of sunlight reaching Earth(d) The strength of gravity
- 10.
A student plants grass on a bare patch of soil on a slope. After several months, less soil is washed away during rain. This shows that —
(a) The rain became lighter over time(b) The grass roots helped to hold the soil in place, reducing erosion(c) The soil became harder on its own(d) The slope became less steep
Answer key — P6 Science: Plants & the Environment
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- 1.(c) Oxygen
- 2.(b) They hold the soil together and prevent it from being washed away
- 3.(b) Cool the surrounding area by blocking direct sunlight
- 4.(b) Soil is washed away easily, causing landslides
- 5.(b) It helps reduce the amount of greenhouse gas in the atmosphere
- 6.roots absorb water from the soil
- 7.(b) Acting as a barrier against strong waves and storms
- 8.(b) Because forests produce large amounts of oxygen and absorb carbon dioxide
- 9.(b) Air pollution and temperature
- 10.(b) The grass roots helped to hold the soil in place, reducing erosion
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