Ch. 13 Quiz

Question 1

If you grow plants whose leaves start to turn yellow and become chlorotic, your plants may need to have which element added to the soil?

Answer 1

Magnesium

Question 2

If a plant is deficient in phosphorus, a typical deficiency symptom would be..

Answer 2

Older leaves that are purple

Question 3

If cubic meters of different souls are compared, in which is the total surface area of all particles greatest?

Answer 3

Clay

Question 4

Organisms capable of nitrogen fixation include..

Answer 4

Bacteria and Cyanobacteria

Question 5

From an energy-conservation standpoint, the most favorable form of nitrogen for a plant is..

Answer 5

NH4+

Question 6

Acid precipitation could affect plants adversely by..

Answer 6

Solubilizing aluminum to toxic levels in the soil and

Making cations less available because they are leached out of the soil

Question 7

The conversion of N2 into ammonia is called..

Answer 7

Nitrogen fixation

Question 8

Gardeners often add peat moss to soul so that water is retained within the soil and does not drain away as rapidly. A gardener would be most likely to add peat moss to soil that is..

Answer 8

Coarse sand

Question 9

You are growing a houseplant that begins to develop leaves that have green veins but dead tissue between the veins. This plant is most likely deficient in ___.

Answer 9

Manganese

Question 10

Which is a true statement regarding element essentiality?

Answer 10

The function of boron is unknown, but growth will not occur without it, therefore it is essential