SE2 G10BB

During a biology class, Yuni is studying a diagram that shows a transverse section (TS) of a herbaceous dicot stem. She is trying to identify which area is xylem.

Agung is studying how trees transport water from their roots to their leaves. Which feature best explains the role of xylem in this water transport process?

• Pits for lateral water movement

• Lignified walls for support

• No cytoplasm to reduce resistance

• Sieve plates for sugar transport

Which nutrient is primarily absorbed by plants through the xylem along with water?

• Glucose

• Phosphate ions

• Fatty acids

• Cellulose

Rani is observing water movement through a plant's root in her biology class. Which pathway involves movement through cell walls and intercellular spaces?

• Apoplast

• Symplast

• Vacuolar

• Transmembrane

What environmental factor would most likely decrease the rate of transpiration?

• High temperature, low wind

• Low temperature, high humidity

• High humidity, low light

• Low humidity, high wind

Agus is studying how plants transport nutrients. Which statement describes phloem transport?

• Moves water from roots to leaves

• Transports sucrose from leaves to roots

• Relies on root pressure

• Occurs in dead cells

Which process creates the hydrostatic pressure gradient needed for mass flow in the phloem?

• Diffusion of water into the xylem

• Evaporation from stomata

• Active transport of sucrose into the sieve tube

• Osmosis in the sink tissue

What is the main vessel that returns deoxygenated blood to the heart from the body?

• Superior vena cava

• Aorta

• Pulmonary vein

• Left atrium

Which vessel carries deoxygenated blood away from the heart?

• Coronary artery

• Pulmonary vein

• Aorta

• Pulmonary artery

A diagram illustrates a blood vessel. What characteristic distinguishes it as a vein?

• Thick wall, small lumen

• Valves present

• High elastic tissue content

• Thin muscular layer