Maintaining a Balance in plants

Question 1

The purpose of lignin in the xylem is to

Accepted Answer

Stiffen walls

Question 2

The ability of water to stick to itself and other things is described as:

Accepted Answer

Adhesion/cohestion

Question 3

The cells that provide energy for the phloem are called

Accepted Answer

Companion cells

Question 4

Sugars enter the phloem from...

Accepted Answer

Sugar source

Question 5

The vascular tissue that has one-way movement in a plant is called the

Accepted Answer

xylem

Question 6

Which plant vascular tissue has mainly passive transport?

Accepted Answer

Xylem

Question 7

Identify the vascular tissue labelled 3 in this diagram (cross section of root)

Accepted Answer

Xylem

Question 8

Water exiting the leaves helps bring more water up the stem in the xylem. This is called:

Accepted Answer

Transpiration pull

Question 9

This diagram is a cross section of a plant stem. Which vascular bundle is closest to the edge?

Accepted Answer

Phloem

Question 10

The transport of sugars such as starch and glucose occurs in the

Accepted Answer

Phloem

Question 11

The theory of movement in the phloem is called:

Accepted Answer

Pressure-flow mechanism

Questions 11