Unit 1 exam 'Plants' grade 7

What chemical pigment absorbs sunlight for photosynthesis?

• chlorophyll

• chloroplast

• oxygen

• carbon dioxide

• upper epidermis

What are the products of photosynthesis?

• water and carbon dioxide

• oxygen and glucose

• oxygen and carbon dioxide

• oxygen and water

The water needed for photosynthesis comes into the leaves through the

• upper epidermis

• stomata

• xylem cells

• phloem cells

The important gases, carbon dioxide and oxygen, enter and leave the leaf through the

• upper epidermis

• stomata

• waxy layer

• spongy layer

Which structure helps prevent water loss and protects the leaf?

• Palisades mesophyll

• Spongy mesophyll

• Waxy layer (Cuticle)

• Lower epidermis

Which is not a function of roots

• Roots absorb water and minerals

• Roots anchor the plant firmly in the ground

• Some plants store food in their roots

• The roots conduct gas exchange

Which of the following is the correct equation for PHOTOSYNTHESIS?

• light + carbon dioxide + water --> glucose + oxygen

• carbon dioxide + sugar + water --> oxygen + light

• oxygen + light + water --> carbon dioxide + sugar

• carbon dioxide + oxygen + water --> Light+ Sugar

#3 - layer of tall, columnar cells that contain many chloroplast for photosynthesis

• Epidermal cells

• Pallisade mesophyll

• Spongy mesophyll

• Stomata

The ___________ of the plant that is charge of making food for the plant.

• flower

• roots

• leaves

• stem

What is the function of the root cell?

• To carry oxygen

• Photosynthesis

• To carry messages

• To absorb water