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Plants and Water 1

In this worksheet, the students will find out about the importance of water for the health of a plant.

'Plants and Water 1' worksheet

Key stage:  KS 2

Curriculum topic:  Plants

Curriculum subtopic:  Requirements for Life and Growth

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

Water is something that all living things need if they are to stay healthy.

 

You might think that the more water you give a plant the better it will grow, but this is not true. Like you, a plant needs to have just enough, but not too much. Some plants, such as those that live on the edges of ponds and rivers, do well in wet conditions. But for other plants, too much water can be as bad for their health as too little water.

 

In this worksheet you can test how much you know about the importance of water for the health of a plant.

 

Watering a plant

What happens if you water a plant that is wilting?

The plant begins to recover in an hour or so

Nothing happens

The plant dies

The plant recovers, but not for several days

If you tie a clear plastic bag over the leaves of a plant what will you see happening after about a day?

Water droplets form on the outside of the bag

Water droplets form on the inside of the bag

Nothing happens

Take a fresh stick of celery and put the cut end into a pot of water to which you have added a few drops of food colouring.  Look at the celery every hour or so.

 

What can you see happening?

The celery makes the water in the pot change colour

The colour slowly moves up the celery stalk

Nothing appears to happen

Cress seeds are planted in two trays. One tray is watered regularly. The other tray isn't given any water at all. What happens?

Tray of cress plants

Most of the seeds in both trays sprout

Most of the seeds in the tray that is watered sprout

Most of the seeds in the tray that is dry sprout

True or false: the more water a plant gets the better it will grow.

true

false

Why do some trees lose their leaves in winter?

 

Bare tree, no leaves

It helps to prevent the tree from drying out

It helps the tree to save energy

It helps to stop the tree blowing over in high winds

It helps to stop snow from settling in the tree

  • Question 1

What happens if you water a plant that is wilting?

CORRECT ANSWER
The plant begins to recover in an hour or so
EDDIE SAYS
Provided it hasn't been kept dry for too long, a plant can recover quite quickly from a shortage of water.
  • Question 2

If you tie a clear plastic bag over the leaves of a plant what will you see happening after about a day?

CORRECT ANSWER
Water droplets form on the inside of the bag
EDDIE SAYS
A plant takes up water through its roots and loses water from its leaves. This water cannot escape from the plastic bag and so condenses into droplets on the inside of the bag. Don't believe me? Well, go and try it for yourself!
  • Question 3

Take a fresh stick of celery and put the cut end into a pot of water to which you have added a few drops of food colouring.  Look at the celery every hour or so.

 

What can you see happening?

CORRECT ANSWER
The colour slowly moves up the celery stalk
EDDIE SAYS
Colouring the water in the pot allows you to see how it moves up the celery stalk. Isn't that amazing? There are tiny tubes running up the stem of the celery. These carry water between the roots and the rest of the plant and this technique can help you to actually see them.
  • Question 4

Cress seeds are planted in two trays. One tray is watered regularly. The other tray isn't given any water at all. What happens?

Tray of cress plants

CORRECT ANSWER
Most of the seeds in the tray that is watered sprout
EDDIE SAYS
The seeds that are watered are much more likely to sprout. Seeds need water to grow. A few of the seeds in the tray that isn't watered might sprout because there is just enough moisture in the soil used.
  • Question 5

True or false: the more water a plant gets the better it will grow.

CORRECT ANSWER
false
EDDIE SAYS
The roots of many plants won't work properly if they get waterlogged. Just like you, too much water and the plant basically 'drowns', so too much water is a bad thing.
  • Question 6

Why do some trees lose their leaves in winter?

 

Bare tree, no leaves

CORRECT ANSWER
It helps to prevent the tree from drying out
It helps the tree to save energy
EDDIE SAYS
As trees lose water through their leaves, losing them will help them to save water. This is useful because in winter the ground may be icy, making it hard to get water. Making leaves takes up a lot of energy so in the winter the trees don't bother - there isn't much sunlight anyway so trees can't photosynthesise much so they don't really miss them!
---- OR ----

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