Edexcel GCSE Combined Science CB6 Plant structures and their functions overview quiz quiz

glucose + oxygen to carbon dioxide + water

glucose to lactic acid

carbon dioxide + water to glucose + oxygen

water to hydrogen + oxygen

It releases heat to the surroundings

It happens only at night

It produces carbon dioxide

It takes in energy from light

Carbon dioxide concentration

The concentration of oxygen gas

The concentration of nitrogen gas

The concentration of glucose made

Light is now the only factor that is limiting the rate of photosynthesis

A different factor, such as carbon dioxide or temperature, has become limiting

Photosynthesis has completely stopped happening in all of the leaves of the plant

The plant being tested has died and can no longer photosynthesise at all

To transport dissolved sugars from the leaves to the rest of the plant

To carry out photosynthesis and make glucose for the plant to use

To transport water and mineral ions from the roots to the leaves

To absorb light energy for use in photosynthesis in the leaf

Only water taken up by the roots

Only dissolved mineral ions from the soil

Oxygen gas produced during respiration

Dissolved sugars made in the leaves

The loss of water vapour from the leaves

The uptake of carbon dioxide gas by a leaf

The making of glucose inside the cells of the leaf

The transport of dissolved sugars in the phloem

Lower temperature

More wind

Higher humidity

Darkness

Palisade cells

Root hair cells

Guard cells

Xylem cells

The lower epidermis at the underside

The xylem vessels carrying the water

The waxy cuticle on the leaf surface

The palisade layer near the top

It is stored as starch

It is breathed out as a gas

It is turned into water

It is used to make chlorophyll only

To reduce the total surface area that is available for capturing light from the Sun

To give a large surface area for light and a short distance for gases to diffuse

To store as much water as possible inside the cells of the leaf

To prevent photosynthesis from happening too quickly in bright light