Chapter 7: Nutrition in Plants

Define Photosynthesis.

It is the "metabolic reaction" occurring in plants in which "light energy converts raw materials; carbon dioxide & water into glucose & oxygen".

What is the equation for Photosynthesis?

What is the importance of Photosynthesis?

It provide "food for animals" + helps "purify air".

What conditions are required for photosynthesis?

Conditions required are; "Temperature, Light, CO2 and water".

How does CO2 enter the leaf?

It enters via "stomata" .

How does water enter the plant?

It "enters the root" of plant through 'Active Transport'. Then through "xylem vessels" it is transported to all the plant.

What are the important mineral ions required in the plant?

Mineral ions required are "Magnesium and Nitrate ions".

What is the role of Magnesium ion in plant?

It is the essential "constituent of chlorophyll" which gives plant its "green color".

What is the role of Nitrate ion in plant?

It is essential for "plants growth" and "synthesis of protoplasm".

In which structure of plant cell photosynthesis occur?

In "mesophyll".

What is the role of cuticle?

It "prevents excessive evaporation of water".

In which structure of plant cell is Chloroplast present?

"palisade tissue" in mesophyll cell has chloroplast.