Chapter 10 test

What would happen if the plants lack magnesium?

• Black patches appear on leaves.

• Young leaves become long and thin.

• Leaves become yellow.

• Leaves become dark green.

The diagram shows the transverse section of a dicotyledonous root.

Which of the following is/are the function(s) of cell 4?

• (3) only

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

The diagram shows the transverse section of a dicotyledonous root.

By which of the following processes are minerals absorbed into cell 6?

• transpiration

• diffusion

• osmosis

• active transport

The diagram shows the transverse section of a dicotyledonous root.

Which of the following cells has the lowest water potential when the root is absorbing water from the soil?

• 3

• 4

• 5

• 6

The diagrams show the sections of the root and the leaf of a dicotyledonous plant.

Which of the labelled tissues are xylem?

• I and III

• I and IV

• II and III

• II and IV

By which of the following processes does oxygen move into the cytoplasm of a root hair cell?

• transpiration

• diffusion

• osmosis

• active transport

Which types of cells in the leaf of a terrestrial plant can carry out photosynthesis?

(1) spongy mesophyll cells

(2) guard cells

(3) root hair cells

• (1) only

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

The graph shows the net uptake and net release of carbon dioxide of a dicotyledonous plant in a day.

The plant carried out photosynthesis

• from 0600 to 1800.

• from 0600 to 2000.

• from 0800 to 1800.

• from 0800 to 2000.

The graph shows the net uptake and net release of carbon dioxide of a dicotyledonous plant in a day.

The plant carried out respiration

• from 2400 to 0600 and from 2000 to 2400.

• from 2400 to 0800 and from 1800 to 2400.

• from 1100 to 1300.

• all the time.

The graph shows the net uptake and net release of carbon dioxide of a dicotyledonous plant in a day.

The highest rate of photosynthesis of the plant is

• 2 a.u.

• 4 a.u.

• 6 a.u.

• 8 a.u.