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प्रश्न
Answer the following:
Mention two significant advantages of photosynthesis to the living world as a whole.
उत्तर
Advantage of photosynthesis :
- To produce food for all the organisms on earth .
- Release oxygen which is a life supporting gas .
APPEARS IN
संबंधित प्रश्न
The diagram given below represents an experiment to prove the importance of a factor in photosynthesis. Answer the questions that follow : 
Name the factor studied in this experiment.
Name the following:
The products that are formed as a result of photosynthesis.
Choose the correct answer:
The process of photosynthesis occurs by _________
Mention one difference between the following on the basis of what is given in bracket.
Respiration and photosynthesis (gas released)
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.
Describe step by step, how the candidate proceeded to test the leaf for the presence of starch?
What is the importance of photosynthesis in the life of the following:
Animals
Oxygen given out during photosynthesis comes from water. Explain this statement.
Write an experiment to demonstrate that CO2 is necessary for photosynthesis.
Name the following:
The process by which plants produce their food.
Give technical term:
The part of the chloroplast where the dark reaction of photosynthesis takes place.
Write the functional activity of the following structure:
Thylakoids
Autotrophs use _____,______ and chlorophyll to prepare their own food.
Which one of the following is a primary producer?
The chemical reaction occurs during photosynthesis is ______.
State whether true or false. If false, correct the statement.
Plants lose water when the stomata on leaves are closed.
The bending of shoot towards light is due to the hormone ______.
An organism A which cannot move from one place to another makes a simple food B from the substances C and D available in the environment. This food is made in the presence of green-colored substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. Does this food give a blue-black color with iodine solution?
a. What is
- organism A
- food B?
- food H?
b. What are C and D?
c. Name green-colored substance E and organ F.
d. What is the process G?
Given below are groups of terms. The first pair indicates the relationship between the two terms. Complete the second pair accordingly.
Producers : Autotrophs : : Consumers : ______
Distinguish between the following pairs on the basis of the word indicated in the bracket ( ).
Producers and Consumers (organisms)
