Question

Give a brief description of the process of synthesis of food in green plants.
NCERT Solutions for Class 7th Science Chapter 1 Nutrition in Plants Page 9 Exercise Question 4

Answer 1

Question 4: Give a brief description of the process of synthesis of food in green plants.
Answer: Photosynthesis is defined as the process in which the chlorophyll-containing plant cells synthesise food in the form of carbohydrates, using carbon dioxide and water in the presence of solar energy.

Photosynthesis
Sources of raw materials required for photosynthesis:
(a) Water is taken in from the roots of the plant and is transported to the leaves.
(b) Carbon dioxide from the air enters the leaves through the tiny pores called stomata and diffuses to the cells containing chlorophyll.
(c) Solar energy is used to break water into hydrogen and oxygen. This hydrogen is combined with carbon dioxide to form food for the plants, which is ultimately used by the animals as well.


Thus, photosynthesis can be represented by the following equation.
in image..

Answer 2

Step-by-step explanation:

Definition-The symthesis of food occurs in the process of sunlight ,it is called photosynthesis.

Explanation- Photo:light ; Synthesis:to combine

the leves have green pigment called chlorophyll which is necessary for photosynthesis.There is tiny pores called stomata on the surface of leaves. Stomata takes carbondioxide and gives oxygen. the water and minerals are taken from the soil by roots to leaves by vessels. The leaves then prepare the food with the help of carbondioxide chlorophyll water and sunlight which are very important for photosynthesis and distribute among other parts of the plant by vessels the left over food is store by the plants in the form of starch. This whole process is photosynthesis