Question 1

What is transpiration?

Accepted Answer

The evaporation of water from the aerial parts of the plant

Answer

The transport of mineral ions from the roots to the leaves

Answer

The movement of water through the xylem vessels

Answer

The movement of glucose through the plant

Answer

The absorption of water by the roots

Question 2

What is the main function of root hairs?

Accepted Answer

To increase the surface area for water absorption

Answer

To produce sugar during photosynthesis

Answer

To transport water from the roots to the leaves

Answer

To store excess water in the roots

Answer

To regulate the opening and closing of stomata

Question 3

What is the role of xylem vessels?

Accepted Answer

To transport water from the roots to the stem to the leaf

Answer

To regulate the opening and closing of stomata

Answer

To absorb water from the soil

Answer

To store excess water in the roots

Answer

To produce sugar during photosynthesis

Question 4

What is the role of transpiration in water movement?

Accepted Answer

Transpiration creates a suction pressure that pulls water up through the plant

Answer

Transpiration transports mineral ions from the roots to the leaves

Answer

Transpiration regulates the opening and closing of stomata

Answer

Transpiration prevents water loss in the leaves

Answer

Transpiration increases the rate of water absorption by the roots

Question 5

What happens to water molecules as they move through the plant?

Accepted Answer

Water molecules are pulled up through the plant in the transpiration stream

Answer

Water molecules are released through the stomata

Answer

Water molecules are broken down into glucose

Answer

Water molecules are stored in the leaves

Answer

Water molecules are absorbed by the roots

Question 6

What does the transpiration stream transport besides water?

Accepted Answer

Mineral ions that are dissolved in the water

Answer

Glucose produced during photosynthesis

Answer

Carbon dioxide absorbed from the air

Answer

Proteins synthesized by the plant

Answer

Oxygen released during transpiration

Question 7

What environmental factors affect transpiration rate?

Accepted Answer

Temperature, humidity, wind, and light intensity

Answer

Rainfall, cloud cover, and air pollution

Answer

Season, day length, and soil moisture

Answer

Soil type, pH, and nutrient availability

Answer

Altitude, latitude, and atmospheric pressure

Question 8

How do guard cells control the opening and closing of stomata?

Accepted Answer

By becoming turgid or flaccid

Answer

By regulating the transpiration rate

Answer

By producing sugar during photosynthesis

Answer

By absorbing water from the soil

Answer

By storing excess water in the leaves

Question 9

What happens to the guard cells and stomata during the day?

Accepted Answer

The guard cells become turgid, and the stomata open

Answer

The guard cells absorb water, and the stomata reduce in size

Answer

The guard cells become flaccid, and the stomata close

Answer

The guard cells store excess water, and the stomata disappear

Answer

The guard cells produce sugar, and the stomata enlarge

Question 10

How does the plant reduce water loss during the night?

Accepted Answer

The guard cells become flaccid, and the stomata close

Answer

The guard cells absorb more water, and the stomata enlarge

Answer

The guard cells produce more sugar, and the stomata expand

Answer

The guard cells become turgid, and the stomata open

Answer

The guard cells store excess water, and the stomata disappear

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