4.2.3 - Importance Of Water & Inorganic Ions To Plants

Question 1

How Are Water & Inorganic Ions (Minerals) Taken Into The Plant?

Answer 1

Absorbed through the root hairs and then travel up the stem in xylem vessels.

Question 2

What Are The Symptoms Shown By The Plant When There Is A Deficiency In Any One Of These Substances; Water, Magnesium Ions, Nitrate Ions & Calcium Ions?
(2 Points)

Answer 2

~ Yellow leaves.

~ Stunted growth.

Question 3

Describe Water
(4 Points)

Answer 3

~ Required for photosynthesis.

~ Provides a transport medium for minerals.

~ Maintains turgidity through pressure in cell vacuoles.

~ Regulates temperature for enzyme activity.

Question 4

Describe Magnesium Ions
(2 Points)

Answer 4

~ Required for the production of chlorophyll.

~ Provides the green colour of stems and leaves is essential for photosynthesis.

Question 5

Describe Nitrate Ions

Answer 5

Supplies nitrogen to make DNA, RNA, proteins and chlorophyll.

Question 6

Describe Calcium Ions
(2 Points)

Answer 6

~ Form important cell wall components like calcium pectate.

~ Essential for plant growth.