Photosynthesis Test review

Which pigment in plant cells captures light energy for photosynthesis?

• Xantophyll

• Carotenoid

• Chlorophyll

• All of the above

Which of the following correctly matches the type of nutrition to its definition?

• Heterotrophic nutrition - Nutrition where organisms make their own food

• Autotrophic Nutrition - Nutrition where organisms depend on others for food

• Saprophytic Nutrition - Nutrition where organisms feed on dead organic material

• Holozoic Nutrition - Nutrition where organisms can make their own food and eat other organisms

In photosynthesis, what gas is taken in by plants and used in the production of glucose?

• Oxygen

• Carbon dioxide

• Hydrogen

• Nitrogen

What is the primary process by which green plants convert sunlight into chemical energy?

• Cellular respiration

• Transpiration

• Germination

• Photosynthesis

Which of the following pairs of items does not correctly match parts of the leaf to their functions?

• Stomata - Loses and gains water to control opening and closing of stomata

• Phloem sieve tubes - Brings water to leaf for photosynthesis

• Spongy mesophyll - Has many air spaces to aid gaseous exchange

• Palisade mesophyll - Contains many chloroplasts for photosynthesis

A small hibiscus plant in a pot was placed in darkness for four days. It was then removed, placed in a large air-tight bell jar containing a beaker of sodium hydroxide and exposed to strong sunlight. After 3 hours the plant would have.

• Formed starch because the strong sunlight provided the energy for photosynthesis

• Not formed any starch because 3 hours was too short for photosynthesis to occur

• Formed starch because chlorophyll, light and other conditions for photosynthesis were present

• Not formed any starch because carbon dioxide in the bell jar was absorbed by the sodium hydroxide

Which tissue contains the most chloroplasts?

• Tissue I

• Tissue II

• Tissue III

• Tissue IV

The function of tissue IV is to:

• To trap sunlight for photosynthesis

• Bring water to the leaf and take food away

• Allow water vapor to escape

• Allow for gaseous exchange

Before the experiment was set up, the plants were placed in a dark cupboard for about 24 hrs. This step was necessary to:

• Reduce the quantity of sugar produced during photosynthesis

• Allow the plant to get its store of carbon dioxide

• Ensure that any starch produced was removed from the leaves i.e. to de-starch the plant

• To stop further reduction of carbon dioxide to carbohydrate

The following pairs of statements relate to testing a leaf for starch. Which pair is NOT correctly matched?

• Boil leaf in ethanol - Removes chlorophyll

• Wash in water - Removes starch

• Boil leaf in water - Kills the leaf

• Test with iodine solution - Tests for starch