9D Quick Quiz
1 Choose from the following list the correct products of photosynthesis.
A water and carbon dioxide
B glucose and carbon dioxide
C glucose and oxygen
D water and carbon dioxide
2 In plants starch is used:
A to make flowers colourful.
B as a store of energy.
C to absorb water from the soil.
D to make leaves green.
3 In human food chains, plants are important because:
A they are primary consumers.
B they are secondary consumers.
C they are herbivores.
D they are producers.
4 Starch is part of a balanced diet because:
A it is needed for strong bones and teeth.
B it helps the digestive system remain healthy.
C it is a source of energy.
D it is needed for growth and repair of cells.
1 Which of the following is a mineral salt contained in fertilisers?
2 Farmers add fertilisers to soil because crop plants need mineral salts:
A to help absorb water.
B for healthy growth.
C to germinate their seeds.
D to produce nectar.
3 Weeds are:
A plants that compete with crops.
B plants that are grown to produce fruit.
C extremely rare plants.
D plants that help crops to grow.
4 Farmers can control the growth of weeds by spraying them with:
1 A pest is:
A an insect that pollinates flowers.
B an animal that provides manure for farmers.
C an important crop plant.
D an organism that damages crops.
2 Which of the following is an example of a pest in action?
A a ladybird eating an aphid
B an owl eating a dormouse
C an aphid feeding off a rosebush
D a woodmouse feeding off bramble
3 Farmers use pesticides to:
A help crop plants absorb more water.
B reduce the number of pests.
C provide mineral salts for crop plants.
D increase the number of pests.
4 Which of the following could be a problem caused by using pesticides?
A They can affect more organisms than the farmer intends.
B They cause plants to grow too slowly.
C They can cause plants to grow too quickly.
D They can cause soil erosion.
1 Which of the following environmental conditions will not increase the rate of photosynthesis in a crop plant?
A well-watered soil
B warm weather
C bright sunshine
D windy weather
2 Photosynthesis is important for plant growth because the more food that is produced:
A the more energy that can be used for growth.
B the greener the plant becomes.
C the more that can be stored in the roots.
D the more colourful flowers that can be produced.
3 Which of these will not change the temperature inside a greenhouse?
A opening ventilation flaps
B using a paraffin heater
C pumping in extra carbon dioxide
D using blinds
4 Which of the following is not an advantage of growing crops in greenhouses?
A Heaters can be used in winter to increase the temperature for photosynthesis.
B Extra carbon dioxide can easily be added to the crop plants.
C The crop plants need to be provided with less fertiliser.
D Artificial lighting can be used in the winter to provide more light for photosynthesis.