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The Importance of Green Plants

This worksheet will look at the importance of green plants in our environment and the impact that the loss of green plants can have.

'The Importance of Green Plants' worksheet

Key stage:  KS 3

Curriculum topic:  Biology: Material Cycles and Energy

Curriculum subtopic:  Photosynthesis

Difficulty level:  

down

Worksheet Overview

QUESTION 1 of 10

 

Many people may look at the picture above and see a tree, but that's not all it is. This green plant plays a huge role in our lives, without us even realising it. 

Green plants provide us with food. They are at the start of all food chains (see below) and are called producers as they can produce their own energy. Green plants provide us with fruits and vegetables and also feed other animals that we may then go on to eat.

 

 

 
 
Photosynthesis

Green plants play a big role in our lives but play a bigger role in our environment. The equation below represents the process of photosynthesis:

 


From this equation, we can see that green plants provide our atmosphere with oxygen and use up carbon dioxide. The real importance of this is shown when we look at the equation for aerobic respiration.  
 
 
 
Aerobic Respiration

The equation below represents the process of aerobic respiration:

 

 


Respiration is the reverse reaction of photosynthesis which allows for the oxygen/carbon dioxide levels in the atmosphere to be kept constant.   
 

The Big CO2 Issue

The oxygen/carbon dioxide balance is extremely important, as carbon dioxide is a greenhouse gas. The ever increasing world population has led to this balance being disturbed.

An increasing population means an increase in the need for housing, schools, hospitals and factories. For these to be built, areas of green land must be cleared, causing an increase in the amount of CO2 in the atmosphere. The increase in any greenhouse gas causes something known as The Greenhouse Effect and can lead to global warming.

The increasing population also means an increased demand for food and energy, leading to deforestation.

In a food chain, what are green plants classed as?

producers

consumers

primary consumers

secondary consumers

The equation below represents which natural process?

 

aerobic respiration

photosynthesis

Green plants provide our atmosphere with which of the following gases? 

carbon dioxide

oxygen

nitrogen

argon

Which of the following gases is used up in photosynthesis? 

carbon dioxide

oxygen

nitrogen

argon

Which of the following gases is a greenhouse gas? 

carbon dioxide

oxygen

nitrogen

argon

Complete the following sentence by writing the two missing words in the answer box below:

 

The build up of greenhouse gases in our environment causes the greenhouse affect, and can lead to _______   ___________.

Which of the following will cause in increase in atmospheric CO2 levels?

increasing world population

burning fossil fuels

decreasing world population

planting more trees

deforestation

the increased use of solar power

The equation below represents photosynthesis.

 

 

 Where does the energy comes from?

the air

the sun

the ground

  • Question 1

In a food chain, what are green plants classed as?

CORRECT ANSWER
producers
EDDIE SAYS
Green plants are classed as producers, as they produce their own energy.
  • Question 2

The equation below represents which natural process?

 

CORRECT ANSWER
photosynthesis
EDDIE SAYS
The equation below represents the process of photosynthesis within green plants.
  • Question 3

Green plants provide our atmosphere with which of the following gases? 

CORRECT ANSWER
oxygen
EDDIE SAYS
Green plants take in carbon dioxide and produce oxygen. Human beings and other living things need oxygen to survive, so green plants are extremely important.
  • Question 4

Which of the following gases is used up in photosynthesis? 

CORRECT ANSWER
carbon dioxide
EDDIE SAYS
Green plants take in carbon dioxide. They need it in order to carry out photosynthesis.
  • Question 5

Which of the following gases is a greenhouse gas? 

CORRECT ANSWER
carbon dioxide
  • Question 6

Complete the following sentence by writing the two missing words in the answer box below:

 

The build up of greenhouse gases in our environment causes the greenhouse affect, and can lead to _______   ___________.

CORRECT ANSWER
global warming
EDDIE SAYS
The Greenhouse Effect is where the build up of greenhouse gases is preventing the sun's heat and radiation from bouncing back out of the Earth's atmosphere, meaning that the planet is warming up.
  • Question 7

Which of the following will cause in increase in atmospheric CO2 levels?

CORRECT ANSWER
increasing world population
burning fossil fuels
deforestation
EDDIE SAYS
An increasing population means an increase in the need for housing, schools, hospitals and factories. For these to be built, areas of green land must be cleared, causing an increase in the amount of carbon dioxide in the atmosphere. The increasing population also means and increased demand for food and energy leading to deforestation.
  • Question 8

The equation below represents photosynthesis.

 

 

 Where does the energy comes from?

CORRECT ANSWER
the sun
EDDIE SAYS
The Sun provides the energy needed for photosynthesis.
---- OR ----

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