Advertisements
Advertisements
प्रश्न
During photosynthesis, the oxygen in glucose comes from
विकल्प
CO2
water
both CO2 and water
oxygen via air
Advertisements
उत्तर
CO2
संबंधित प्रश्न
The individual flattened stacks of membranous structures inside the chloroplasts are known as :
A. Grana
B. Stroma
C. Thylakoids
D. Cristae
Match the terms of column I with those in column II:
| Column I | Column II |
| (i) Stomata closed | (a) decomposers |
| (ii) Autotrophs | (b) light reaction |
| (iii) By-products of photosynthesis | (c) animals |
| (iv) Photolysis | (d) during night |
| (v) Bacteria and fungi | (e) green plants |
| ( f) oxygen |
Mention one difference between the following on the basis of what is given in bracket.
Grass and grasshopper (mode of nutrition)
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.
Why was the plant kept in the dark before the experiment?
Complete the following food chain by writing the names of appropriate organisms in the blanks:
Grass → __________ → Snake → __________
Write an experiment to demonstrate that CO2 is necessary for photosynthesis.
Write the functional activity of the following structure:
Thylakoids
Gas exchange takes place in plants using _____.
What will happen if you breathe through mouth?
Plants inhale and exhale continuously through the ______.
