Plants without light | Exit Quiz | Oak National Academy

Some children put a square of black plastic onto a patch of healthy grass and left it for one week. What colour was the grass where the plastic had been?

Answer explanation

Plants without light will lose their green colour and often turn yellow.

A healthy plant is given water and warmth in a dark room for one week. What will happen to it at first?

• The plant will stay healthy and strong.

• The plant will grow taller and turn yellow.

• The plant will stop growing and lose all its leaves.

Answer explanation

Plants without light will often grow taller at first as if 'searching' for some light.

Which statement about plants growing in the dark is not true?

• Growing in the dark can change the colour of leaves.

• Growing in the dark can change the colour of seeds.

• Growing in the dark can change how tall the plant is.

Answer explanation

Plants grown with no light can grow taller at first and also change to a yellow or white colour.

What does a scientist not need to do to describe how a plant is changing?

• Observe the plants

• Compare the plants

• Water the plants

Answer explanation

Observing and comparing help us to be able to describe how the plant is changing

This red chilli plant grows well in the warmest places with lots of light. Where is a good place to grow a chilli plant?

• In the garden where there is lots of light from the Sun.

• Under the tree where there is no light from the Sun.

• Behind the shed where there is some shade from the light of the Sun.

Answer explanation

Red chillies grow best in full sunlight.

What can I do to help an unhealthy plant that has been growing without light?

• Put the plant somewhere light and it could become healthy again.

• Keep the plant where it is and it could become healthy again.

• Throw the plant away as it can't be made healthy again.

Answer explanation

Plants growing in a dark place can be recovered with plenty of light.