Biology 2.3

starch

polysaccharide in plant cells that consists entirely of glucose monomers

Photosynthesis

process by which plants use the sun's energy to convert water and carbon dioxide into sugars

sucrose

a disaccharide, table sugar, molecule of glucose and fructose minus a water

Glucose

A simple sugar produced as the initial product of photosynthesis

Why would you expect to find a great deal of parenchyma tissue in the roots of plants such as the carrot, beet, and radish?

Because they have storage roots planted in the soil underground

Why is photosynthesis so important to life on earth?

Because this is one of the most important chemical manufacturing processes on earth, for it produces a tremendous amount of food.

Explain how the action of the guard cells can affect the rate of photosynthesis.

Because when water is short on supply guard cells close the stomata in order to conserve water causing the plant's supply of carbon to be cut off

In what form do plants store excess glucose?

It changes simple sugar molecules into a long chain of molecules called starch

In what form is glucose usually transported throughout the plant?

Sucrose; a table sugar

What factor that affects the rate of photosynthesis is most important?

Sunlight because of the intensity of the sunlight striking the leaf

Cellular Respiration

The oxidation of various foods, such as glucose, within living cells of both plants and animals for the purpose of releasing energy

Where do the carbon, oxygen, and hydrogen in a glucose molecule produced by photosynthesis come from?

The oxygen comes from the water in soil, the carbon is obtained from the air, and the plant uses the energy of the sun to split the water into hydrogen

What are the factors which affect the rate of photosynthesis?

Water, carbon dioxide, heat, and sunlight