Transpiration

How do plants primarily absorb water from the soil?

• Through active transport in the stem.

• By diffusion through the leaves.

• Via osmosis through root hair cells.

• By capillary action in the xylem.

What specialised cells are adapted to increase the rate of water uptake?

• Leaf cells
• Stem cells
• Xylem cells
• Root hair cells

How are root hair cells adapted for their function?

• Root hair cells are found only in the leaves of plants.
• Root hair cells are thick-walled to prevent water loss.
• Root hair cells have a large surface area, thin walls, and are positioned to maximize absorption of water and nutrients.
• Root hair cells are designed to store energy instead of absorbing nutrients.

What is the process called when water is lost from plant leaves as vapor through stomata?

• Photosynthesis

• Osmosis

• Transpiration

• Respiration

Water is lost through which structure in the leaf?

• veins
• chloroplasts
• stomata
• cuticle

What is the function of the stomata?

• To provide structural support to the leaves.
• To facilitate gas exchange in the leaf.

• To absorb sunlight for photosynthesis.
• To store nutrients for the plant.

Which environmental factor, when increased, typically leads to a decrease in the rate of transpiration in plants?

• Light Intensity

• Temperature

• Wind Speed

• Humidity

What factors can affect the transpiration stream?

• Temperature, humidity, wind speed and light intensity.

• Light intensity, root depth, insect activity

• Air pressure, wind speed, water pH

• Soil temperature, rainfall, light intensity, and pH

What is a crucial step when setting up a potometer to ensure accurate measurement of transpiration?

• Exposing the plant to direct sunlight immediately.

• Cutting the plant shoot in the open air to allow for quick drying.

• Assembling the apparatus underwater to prevent air bubbles from entering the xylem.

• Using a fan to increase wind speed around the plant.

What piece of equipment can be used to measure the rate of transpiration?