Biology Test Plant Biology 3

Question 1

What is the primary pigment responsible for capturing light energy during photosynthesis?

Accepted Answer

Chlorophyll a

Answer

Carotenoid

Answer

Xanthophyll

Answer

Phycobilin

Question 2

During which phase of the cell cycle does DNA replication occur in plants?

Accepted Answer

S phase

Answer

G1 phase

Answer

G2 phase

Answer

M phase

Question 3

What type of root adaptation allows mangrove trees to exchange gases in waterlogged soils?

Accepted Answer

Pneumatophores

Answer

Prop roots

Answer

Haustoria

Answer

Contractile roots

Question 4

Which layer of the leaf is responsible for most photosynthesis and has loosely packed cells to allow gas diffusion?

Accepted Answer

Spongy mesophyll

Answer

Palisade mesophyll

Answer

Upper epidermis

Answer

Lower epidermis

Question 5

What is the role of the Casparian strip in plant roots?

Accepted Answer

Forces water through the symplast into the vascular tissue

Answer

Stores starch

Answer

Prevents backflow of water into the soil

Answer

Absorbs mineral ions by active transport

Question 6

Which plant tissue type provides structural support and is composed of dead cells at maturity?

Accepted Answer

Sclerenchyma

Answer

Collenchyma

Answer

Parenchyma

Answer

Meristematic tissue

Question 7

What is vernalization in plants?

Accepted Answer

Requirement for cold temperature to trigger flowering

Answer

Leaf color change in autumn

Answer

Growth response toward light

Answer

Root elongation in spring