Column – I | Column - II | ||
i. | Jan Ingenhousz | a. | discovery of O2 |
ii. | Joseph Priestley | b. | Plants restore to the air whatever breathing animals and burning candles remove |
iii. | T.W Englemann | c. | showed that only the green part of the plants could release oxygen |
iv. | Julius von Sachs | d. | discovery of production of glucose in plants |
e. | first action spectrum of photosynthesis | ||
f. | Using a prism he split light into its spectral components and then illuminated Cladophora, placed in a suspension of aerobic bacteria. |
Which of the following shows the correct match?
1. | i-c; ii-b; iii-a, e, f; iv-d |
2. | i-a, b; ii-c; iii-d; iv- e, f. |
3. | i-a; ii- b; iii- c, e; iv-f. |
4. | i-c, ii-a,b; iii-e, f; iv-d; |
Assertion(A): | It is only the green part of the plants that release oxygen. |
Reason(R): | Ingenhousz showed that in bright sunlight, small bubbles were formed around the green parts. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
3. | (A) is true, but (R) is false. |
4. | (A) is false, but (R) is true. |
Assertion(A): | Oxygen evolved from green plants actually comes from the water molecule. |
Reason(R): | This was proved using radioisotope techniques. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
3. | (A) is true, but (R) is false. |
4. | (A) is false, but (R) is true. |