Photosynthesis

The video explains how plants are producers, making their own food through photosynthesis, a process that converts sunlight into energy. It details the structure of plant cells, the role of chlorophyll, and the two stages of photosynthesis: light and dark reactions. The video also covers plant transport systems, including xylem and phloem, and the functions of stems in support and water storage, highlighting adaptations like those in cacti.

What is the primary role of plants in the ecosystem?

• They are predators.

• They are producers.

• They are decomposers.

• They are consumers.

Why do plants appear green?

• They produce green pigments.

• They reflect green light.

• They lack chlorophyll.

• They absorb green light.

What are the two main stages of photosynthesis?

• Light and dark reactions

• Day and night reactions

• Hot and cold reactions

• Wet and dry reactions

What is the role of ATP in photosynthesis?

• It stores energy for the plant.

• It absorbs sunlight.

• It transports water.

• It reflects light.

What is the function of xylem in plants?

• Providing energy

• Transporting water and minerals

• Transporting sugars

• Storing food

How do cacti adapt to desert conditions?

• By growing taller

• By having deep roots

• By storing water in their leaves

• By storing water in their stems

What is the main structural function of a plant stem?

• To produce food

• To absorb sunlight

• To provide support

• To store minerals