Question

photosynthesis

• is the process by which green plants and algae convert sunlight to plant tissue from carbon dioxide and water
• requires the presence of __________, or green pigments, in plants which absorb light
• provides an important by-product, oxygen, which helps maintain the oxygen cycle
• all living things, including plants, respire; organisms require oxygen to break down __________ in order to create energy
• process results in carbon dioxide and water by-products

Explanation:

For the first blank, in photosynthesis, the green pigment that absorbs light is chlorophyll. For the second blank, organisms (including plants during respiration) break down glucose (or food, like carbohydrates) to create energy through cellular respiration, where oxygen is used to break down glucose and produce energy (ATP), with carbon dioxide and water as by - products.

Answer:

First blank: chlorophyll; Second blank: glucose (or food/carbohydrates)