Transport in Plants

What is the most abudant solute in phloem sap?

• amino acids

• hormones

• sugar

• minerals

What is the best words to describe sugar source and sugar sink

• Both are plants organ and act as storage

• Sugar sink can be either roots, fruit or mature leaves and sugar source is shoots

• Sugar source act as site for sugar production and sugar sink will store sugar

• Companion tube carry food from a sugar source to a sugar sink

Structure of phloem consists all below, except?

• Sieve tube element

• Tracheids

• Companion cell

• Sieve plate

Which of the following indicates the pathway of water through a plant?

• root hair cell --> xylem --> stomata

• stomata --> root hair cell --> xylem

• xylem --> stomata --> root hair cell

Which statement describes the phloem transport system of plants?

• It transports sugar and is lignified

• It transports sugar and is not lignified

• It transports water and is lignified

Choose the two statements that indicate what would be happening in the plant when stomata are open.

• Guard cells are turgid

• Guard cells are plasmolysed

• Transpiration increase

• Transpiration decrease

Which statement correctly identifies the substance and direction it is transported in the xylem?

• Water, only upwards

• Glucose, only upwards

• Water, up and down the plant

• Glucose, up and down the plant

What is the name of the part of the root that allows water and minerals to enter?

• root hairs
• epidermis
• phloem
• phyla

Which is NOT a function of roots?

• Take in water
• Take in nutrients
• Anchor plant to ground
• Make food

What is the effect of increasing leaf area on transpiration?

• It increases transpiration rate
• It decreases transpiration rate