Photosynthesis Test

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(NB!!! Click on the down arrow to see the other options).

1.) Which element is needed for the plant to make chlorophyll although is not part of the chlorophyll molecule?

Nitrogen Calcium Iron Fluorine Sulphur

2) Which of the following occurs as a result of photosynthesis?

Energy is released Energy is stored Energy is made Carbohydrates are oxidised Energy is produced from nutrients

3)Chlorophyll absorbs most energy from which of these regions of the light spectrum?

Red Blue Green Red and Blue Red and Green

4) Which of these statements is NOT true about Photosynthesis?

A process which has very many steps Needs chlorophyll before it can take place Uses up carbon dioxide Gives out oxygen Requires light for each step to take place

5)When a plant makes a glucose molecule by photosynthesis, from which of these sources does it get its hydrogen?

The air Ammonium in the water Water Acids in the leaf None of the above

6)Which combinations of the following products is/are made during photosynthsis?

NADP-H2 NADP-H2 and ATP NADP-H2 and Carbon dioxide ATP and Carbon dioxide NADP-H2, ATP and Carbon dioxide

7)Which of these is NOT needed for photosynthesis but is a by-product of it?

Oxygen Water Proteins Lipids Carbon dioxide

8) A green plant might suffer from chlorosis if which one of the following had happened? It had

been overwatered not been watered enough been given bright light not been given enough light not been given enough sodium salts

9) In the light phase of photosynthesis, ADP?

Accepts energy Accepts carbon dioxide Accepts hydrogen Traps light energy Splits water molecules

10) Which of these characteristics of a starch molecule make it especially suitable for use as a storage product in plant organs?

Made in photosynthesis A white powder Osmotically inactive Easily digested Forms a colloid with water

11) Radiant energy is essential for the process of photosynthesis to provide sufficient

light energy to split the carbon dioxide molecule light energy to split the water molecule heat energy to combine carbon dioxide and water heat energy to combine chlorophyll and carbon dioxide heat energy to build up glucose

The following two questions refer to this diagram

12)During which of the following stages in this cycle is carbon dioxide taken up?

1 2 3 4 5

13) At which stage are co-enzymes involved ?

1and 3 2 and 4 3 and 5 4 and 5 1 and 2

14) Which of the following is responsible for the conversion of radiant energy to chemical energy?

ATP Ribosomes Lysomes Mitochondria Chlorophyll

15)Which one of the following best describes the graph below ?

Photosynthesis does not take place in the dark As the wavelength of light increases there is a corresponding increase in the rate of photosynthesis. The rate of photosynthesis is greatest in some wavelengths of light No photosynthesis takes place in green, yellow or orange light Photosynthesis only occurs in blue and red light

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