Question

photosynthesis
before you read
after you read this section, you should be able to answer
these questions:

• how do plants make food?
• how do plants get energy from food?
• how do plants exchange gases with the environment?

what is photosynthesis?
many organisms, including humans, have to eat to get
energy. plants, however, are able to make their own food.
plants make their food by a process called photosynthesis.
during photosynthesis, plants use carbon dioxide, water,
and energy from sunlight to make sugars.
how do plants get energy from sunlight?
plant cells have organelles called chloroplasts.
chloroplasts capture the energy from sunlight. inside
a chloroplast, membranes called grana contain chloro-
phyll. chlorophyll is a green pigment that absorbs light
energy. many plants look green because chlorophyll
reflects the green wavelengths of light.
the grana in chloroplasts contain
chlorophyll. chlorophyll is a pigment
that absorbs sunlight.

1. define what is

chlorophyll?

take a look

1. identify where is

chlorophyll found in a
plant cell?

Explanation:

For the first question, the text clearly states that chlorophyll is a green pigment that absorbs light energy. For the second question, the text mentions that plant cells have organelles called chloroplasts and inside a chloroplast, membranes called grana contain chlorophyll.

Answer:

1. Chlorophyll is a green pigment that absorbs light energy.
2. Chlorophyll is found in the grana of chloroplasts (which are organelles in plant cells).