S2 Plants Cells and Photosynthesis

Which substances are used for photosynthesis?

• carbon dioxide and glucose

• carbon dioxide and water

• glucose and oxygen

• glucose and water

The graph shows the concentration of oxygen in the air spaces of a green leaf of a plant during a 12-hour period.

Which statement about carbon dioxide in the air spaces during time X is correct?

• Carbon dioxide is being produced because the rate of photosynthesis is greater than the rate of respiration.

• Carbon dioxide is being produced because the rate of respiration is greater than the rate of photosynthesis.

• Carbon dioxide is being used because the rate of photosynthesis is greater than the rate of respiration.

• Carbon dioxide is being used because the rate of respiration is greater than the rate of photosynthesis.

Which pair of statements about a plant cell is correct?

• outer surface of the cell - cell membrane

  position of vacuole - outside the cytoplasm

• outer surface of the cell - cell membrane

  position of vacuole - surrounded by the cytoplasm

• outer surface of the cell - cell wall

  position of vacuole - outside the cytoplasm

• outer surface of the cell - cell wall

  position of vacuole - surrounded by the cytoplasm

The diagram shows a type of plant cell.

In which tissue is this cell found?

• leaf epidermis

• palisade mesophyll

• root epidermis

• xylem

Which structure is found only in plant cells?

• cell membrane

• chloroplast

• cytoplasm

• nucleus

The diagram shows a palisade cell from a leaf.

Which labelled structure produces oxygen?

• A

• B

• C

• D

What does photosynthesis form in a leaf first?

• cellulose

• protein

• starch

• sugar

Which of these is the correct pair of test and substance it tests for.

• Benedict’s test - starch

• Benedict’s test - protein

• Iodine - starch

• Iodine - protein

Iodine turns ............ in the presence of starch

• orange

• lilac

• blue-black

• cloudy

The diagram shows the apparatus used in an investigation to measure the rate of oxygen production during photosynthesis. The investigation was repeated several times and the average amount of gas collected was calculated.

Which two factors must be kept constant during this investigation?

• the amount of water in the beaker and the height of the measuring cylinder

• the size of aquatic plant and the amount of gas in the measuring cylinder

• the size of aquatic plant and the duration of exposure to light

• the size of the beaker and the funnel