Biology Topic Practice

Plant Mineral Deficiencies

Not all plant "diseases" are caused by pathogens; some are caused by a lack of essential mineral ions from the soil.

Which mineral deficiency causes "chlorosis"?

What is Plant Mineral Deficiencies?

"Mineral deficiency in plants is a condition where the plant lacks sufficient amounts of vital nutrients for healthy growth."

Question 1

What is a likely effect of nitrate ion deficiency in a plant?

Question 2

What is a likely effect of magnesium ion deficiency in a plant?

Question 3

Why can nitrate and magnesium deficiencies be confused at first?

Specific Ion Roles

Nitrate deficiency: Needed for protein synthesis and growth (causes stunted growth).

Magnesium deficiency: Needed for making chlorophyll (causes chlorosis/yellowing).

Chlorosis reduces photosynthesis, weakening the plant.

Exam Tip

Chlorosis is the name for the yellowing of leaves due to lack of chlorophyll.

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