Photosynthesis

Photosynthesis

Open Ended

A Gr. 4 learner wanted to grow some beans and carefully planted them in a yoghurt tub and watered them. He was scared that his little brother would knock his tub over, so he hid the tub in his cupboard.

Explain what he would have noticed a few days after planting the beans. [2 marks]

Answer scheme

He might have noticed a root and first leaves forming.

Open Ended

Predict what would have happened after another few days with the beans hidden in his cupboard. [2 marks]

Answer scheme

• The young bean plants would have formed small leaves//photosynthesis would have started

• the plants would slowly start to die.

Open Ended

Explain why you predicted this outcome for his beans. [2 marks]

Answer scheme

• The bean plants would die as the leaves would not have enough light energy to allow them to photosynthesise

• produce glucose for the plants to use to grow and develop.

Open Ended

What should he have done to make his bean plants grow tall and strong? [2 marks]

Answer scheme

• He should have put the plants in a place where they would get enough radiant energy (sunlight)

• to allow them to photosynthesise.

Multiple Choice

What is photosynthesis?

• The process in which humans eat their food

• When a photographer takes a photo.

• The process in which plants make their food.

• To get your pictures from the photo lab.

Multiple Choice

Which gas is removed from the atmosphere during photosynthesis?

• Argon

• Oxygen

• Methane

• Carbon Dioxide

Multiple Choice

Which part of the plant transports nutrients from the leaves to the rest of the plant?

• Stoma

• Phloem

• Chloroplast

• Chlorophyll

Multiple Choice

__________ energy from the sun is changed into __________ energy during photosynthesis

• Electrical, Light

• Chemical, Light

• Physical, Chemical

• Light, Chemical

Multiple Choice

What are the products of photosynthesis?

• carbon dioxide and glucose

• oxygen and glucose

• water and carbon dioxide

• oxygen and carbon dioxide

Multiple Choice

Photosynthesis happens both during the day and night in plants.

• True

• False

Multiple Choice

Glucose is a type of _______________.

• Dairy Product

• Protein

• Salt

• Sugar

Multiple Choice

Which of the following is not a product (right side)of photosynthesis?

• Carbon Dioxide

• Oxygen

• Glucose

Multiple Choice

The stoma on the underside of the leaf allows ___________ to move in and out of the leaf.

• Gases

• Water

• Nutrients

• Soil

Multiple Choice

What part of the leaf is responsible for absorbing the sun’s energy?

• Cell Wall

• Veins

• Chlorophyll

• Nucleus

Multiple Choice

Which is not a reactant (left side) needed for producing food in a green plant.

• Carbon Dioxide

• Water

• Oxygen

• Sunlight