CLS Plant transport Knowledge Quiz

What is the role of phloem in plants?

• Transporting sucrose and amino acids

• Transporting water and mineral ions

• Absorbing water by root hair cells

• Evaporating water from the surface

How is water absorbed by plants?

• Through the leaves

• Via the stem

• By root hair cells

• Through the flowers

What is transpiration in plants?

• Absorption of nutrients

• Loss of water vapour from leaves via the stomata

• Absorption of oxygen via stomata

• Absorption of carbon dioxide via the stomata

Which factors affect the rate of transpiration?

• Soil type and pH level

• Humidity, wind speed, temperature, and light intensity

• Leaf size and color

• Root depth and width

What are the waste products of metabolism in plants?

• Carbon dioxide and oxygen

• Water and glucose

• Nitrogen and sulfur

• Phosphorus and potassium

What is required for a co-ordinated response in organisms?

• A cell, a tissue, and an organ

• A hormone, a neuron, and a muscle

• A signal, a transmitter, and a receiver

• A stimulus, a receptor, coordinator and an effector

What is the role of auxin in plants?

• Transporting water

• Phototropic response of stems

• Absorbing nutrients

• Protecting from pests

What is a selectively permeable membrane?

• A membrane that allows all substances to pass through

• A membrane that allows only water to pass through

• A membrane that allows certain molecules to pass through while blocking others

• A membrane that blocks all substances

What happens to water potential when more solute is added to a solution?

• Water potential increases

• Water potential decreases

• Water potential remains the same

• Water potential becomes zero

Define the term osmosis.

• The movement of water molecules through a selectively permeable membrane down a water potential gradient

• The movement of solute molecules from a region of higher concentration to a region of lower concentration.

• The movement of water molecules through a selectively permeable membrane from a region of higher solute concentration to a region of lower solute concentration.

• The movement of solute molecules through a selectively permeable membrane from a region of lower concentration to a region of higher concentration.