AP BIOLOGY

Detailed explanation-1: -In plants and algae, which developed much later, photosynthesis occurs in a specialized intracellular organelle-the chloroplast. Chloroplasts perform photosynthesis during the daylight hours.

Detailed explanation-2: -Inside the chloroplasts are stacks of discs called thylakoids. They are compared to stacks of coins within the walls of the chloroplast, and they act to trap the energy from sunlight. The stacks of thylakoids are called grana.

Detailed explanation-3: -Photosynthetic cells contain chlorophyll and other light-sensitive pigments that capture solar energy. In the presence of carbon dioxide, such cells are able to convert this solar energy into energy-rich organic molecules, such as glucose.

Detailed explanation-4: -The organelle that captures sunlight for plants is the chloroplast. Chloroplasts are green, membrane-bound organelles inside the cytoplasm of plant cells. They contain the pigment chlorophyll, which both gives plants their green color and allows plants to harvest the energy in sunlight.