Chapter 8, Problem 15A

Summary Introduction

To write:

Correct vocabulary term for the given definition.

Introduction:

Photosynthesis is an anabolic pathway in which light energy from the Sun is converted to chemical energy for use by the cell. Light energy is trapped by pigments called chlorophyll. Photosynthesis occurs in two phases; light dependent reaction and light independent reaction.

Answer to Problem 15A

Grana

Explanation of Solution

Chloroplasts are the organelles which capture light energy. They are found in all leaves. Chloroplasts have two compartments;

1. Flat sac like structures called thylakoids. The thylakoids are arranged in stacks called grana. Light dependent reactions occur in thylakoids. The thylakoid membranes contain light absorbing pigments.
2. A fluid filled space called stroma present outside the grana.