Photosynthesis and Plant Structures

The video tutorial covers the characteristics of seed plants, including their vascular tissue, role as a food source, and reproduction through seeds. It distinguishes between gymnosperms and angiosperms. The structure and function of leaves are explained, focusing on photosynthesis, chlorophyll, and the role of stomata and epidermis in gas exchange and water conservation.

What is one of the main functions of vascular tissue in seed plants?

• To perform photosynthesis

• To protect the plant from pests

• To transport water and nutrients

• To produce seeds

Which of the following is a characteristic of gymnosperms?

• They are flowering plants

• They have seeds enclosed in fruits

• They are non-flowering plants

• They perform photosynthesis at night

What is the primary role of leaves in plants?

• To transport nutrients

• To perform photosynthesis

• To absorb water from the soil

• To protect the plant from herbivores

What is the main product of photosynthesis?

• Carbon dioxide

• Glucose

• Chlorophyll

• Nitrogen

What is the function of stomata in leaves?

• To protect the leaf from sunlight

• To store water

• To capture and release gases

• To produce chlorophyll

Why do stomata close at night?

• To release oxygen

• To capture more carbon dioxide

• To prevent water loss

• To absorb more sunlight

What is the purpose of the waxy cuticle on leaves?

• To aid in photosynthesis

• To conserve water

• To attract pollinators

• To store nutrients

Where does photosynthesis primarily occur within the leaf?

• In the stomata

• In the chloroplasts

• In the cuticle

• In the epidermis

What pigment is responsible for the green color of leaves?

• Chlorophyll

• Anthocyanin

• Carotene

• Xanthophyll

What is the role of chlorophyll in photosynthesis?

• To store glucose

• To absorb sunlight

• To release oxygen

• To transport water