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What does xylem transport?

• Water and minerals

• Water only

• Sugar

• Food

Is mature xylem alive or dead?

• Alive

• Dead

Water and minerals move in which direction within the plant

• Upward

• Down

Are phloem cells alive or dead?

• Alive

• Dead

The evaporation of water from the stomata (openings in the leaves) is the process of ...

• Transpiration

• Translocation

• Diffusion

• Perspiration

Tags

NGSS.MS-LS2-3

Without the process of transpiration, a plant would be unable to...

• Move sucrose from the leaves to the roots.

• Create new proteins for the plant.

• Pull up new water and mineral ions from the roots to the leaves.

• Grow towards the light.

Tags

NGSS.MS-LS2-3

Why is water able to flow up a plant?

• Gravity

• Water pressure

• Leaves have a higher water potential

• Leaves have a lower water potential

Where is lignin found?

• Phloem cell walls

• Leaves

• Stomata

• Xylem cell walls

Which of the following statement is true about sieve tube cells?

• Sieve tube cells are nucleated but devoid of mitochondria and ER

• Companion cells are non-nucleated and regulated by nucleated sieve cell

• Sieve tube cells are present in all plants

• Companion cells are nucleated and regulates activity of non-nucleated sieve tube

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

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3