Advertisements
Advertisements
Question
What is photosynthesis and wherein a cell does occur?
Advertisements
Solution
Photosynthesis is a process in which the green plants use sunlight and the green pigment chlorophyll, to synthesize, nutrients from carbon dioxide from air and water. Photosynthesis occurs in green parts of the plant such as leaves, stems, and floral buds.
APPEARS IN
RELATED QUESTIONS
Cochlea, Malleus, Pinna, Stapes, Incus.
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions:

(i) Name the process intended for study.
(ii) Define the above mentioned process.
(iii) When the weight of the test tube (A & B) is taken before and after the experiment, what is observed? Give reasons to justify your observation in A & B.
(iv) What is the purpose of keeping the test tube B in the experimental setup?
Name the following:
The principle site in a green leaf for photosynthesis.
The following statement is about photosynthesis in a green plant. Write whether it is True or False.
Photosynthesis results in a gain in dry weight.
Fill in the blank:
Xanthophyll is ______ coloured pigment.
Fill in the blank:
CO2 enters the leaf through ______.
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
Is there any control in this experiment? If so, state it.
Give technical term:
What does NADP stand for?
Read the following sentences about photosynthesis:
- Sunlight, carbon dioxide, chlorophyll and water are necessary.
- Oxygen is absorbed.
- Leaves carry out photosynthesis.
- Proteins are made during photosynthesis.
Choose the correct pair of sentences that are true to photosynthesis.
