PrepBharat

1. Which of the following is incorrect about the experiment performed by T. W. Engelmann?
a) Cladophora (a green algae) is used.
b) Suspension of aerobic bacteria is used.
c) Bacteria accumulated mainly in the region of orange and green part of the light spectrum.
d) Prism was used to split light into its spectral component.

View Answer

2. A first action spectrum of photosynthesis was described on the basis of experiment performed by T. W. Engelmann on _________ algae.
a) Green
b) Red
c) Brown
d) All of theses

View Answer

3.Which of the following pigments resemble the action spectrum produced on the basis of Engelmann experiment?
A. Chlorophyll a
B. Chlorophyll b
C. Xanthophyll
D. Carotenoids
a) A and C only
b) A and B only
c) Only A
d) C and D only

View Answer

4. Who demostrated that photosynthesis is essentially a light-dependent reaction in which hydrogen from a suitable oxidizable compound reduces \[CO_{2}\] to carbohydrates?
a) Engelmann
b) Von Sachs
c) C. B. Van Niel
d) Jan Ingenhousz

View Answer

5. Van Neil performed the experiment \[O_{2}\] on
a) Purple and Green bacteria
b) Green algae
c) Green plants
d) Fungus

View Answer

6. Van Neil was a
a) Physicist
b) Microbiologist
c) Biochemist
d) Chemist

View Answer

7. Which of the following reaction expresses Van Niel reaction for photosynthesis?


View Answer

Answer: b
Explanation:

8. What are the probable oxidation production of \[H_{2}S\]   in purple and green sulphur bacteria?
a) Sulphur
b) Sulphate
c) Both (a) and (b)
d) None of theses

View Answer

9. The correct equation of photosynthesis is


View Answer

Answer: c
Explanation:

10. By using a _________ isotope it can be proved that O₂ is released from water during photosynthesis
a) Radioactive
b) Heavy
c) Both (a) and (b)
d) None of theses

View Answer