G9 Plant Biology quiz: L1-L8 (Feb 2025)

What is the main function of the phloem?

• The phloem is responsible for photosynthesis in leaves.
• The main function of the phloem is to provide structural support to the plant.
• The phloem primarily absorbs water from the soil.
• The main function of the phloem is to transport nutrients and sugars throughout the plant.

Which part of the plant is responsible for absorbing water and minerals from the soil?

• Roots
• Leaves
• Flowers
• Stems

The xylem primarily transports:

• carbon dioxide
• glucose
• water and dissolved minerals
• oxygen

What is the main product of photosynthesis (useful for the plant)?

• Glucose
• Carbon Dioxide
• Oxygen
• Water

Transpiration is the process of:

• Transporting sugars from leaves to other parts of the plant

• Water loss through stomata in leaves

• Photosynthesis in leaves

• Breaking down glucose for energy

In the celery transpiration experiment, food dye is used to:

• enhance leaf color
• visualize water uptake and transpiration in plants
• reduce soil moisture
• increase plant growth

What is the main function of the stomata?

• Gas exchange

• Transport of sugars

• Photosynthesis

• Water absorption

Which environmental factor does NOT affect transpiration rate?

• Humidity levels
• Temperature fluctuations
• Wind speed
• Soil type

Which organelle is responsible for photosynthesis?

• Mitochondria
• Nucleus
• Chloroplasts
• Ribosomes

Aerobic respiration requires which gas?

• Carbon Dioxide
• Nitrogen
• Hydrogen
• Oxygen