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EAMCET Botany Important Questions with Key

1. Study the following lists.
List I List II
(A) Lycopene I. Phaeophyceae
(B) α-Carotene II. Daucus Chillies
(C) β-Carotene III. Tomato
(D) Capsanthin IV. Xanthophyceae V. Daucus
The correct match is
1) I IV II V 2) II III V I

2. The following pigments belong to a group of chemicals called terpenoids.
1) C40H56 2) C40H56O2
3) C55H72O5N4Mg, 4) C40H56O2, C40H56 C55H70O6N4Mg

3. Phytol is attached to the following part of Chlorophyll
1) 4th pyrole ring 2) Porphorin 3) 3rd pyrole ring 4) Mg

4. Lutein is-
1) Blue coloured pigment
2) Yellow coloured pigment
3) Brown coloured pigment
4) Orange coloured pigment

5. Aldehyde, Methyl groups are attached to the following chlorophyll types respectively-
1) 3rd carbon of 2nd pyrole ring of Chl-b, 2nd carbon of 3rd pyrole ring of Chl-a
2) 2nd carbon of 3rd pyrole ring of Chl-b, 2nd carbon of 2nd pyrole ring of Chl-a
3) 3rd carbon of 2nd pyrole ring of Chl-a, 3rd carbon of 2nd pyrole ring of Chl-b
4) 3rd carbon of 2nd pyrole ring of Chl-b, 3rd carbon of 2nd pyrole ring of Chl-a

6. Assertion (A): Carotenoids and Phycobilins constitute Accessory pigments.
Reason (R): These pigments trap the radiant energy and transfer to chlorophyll - a and chlorophyll - b.
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

7. Environment (atmosphere) is cleaned by green plants during-
1) Day and Night 2) Day 3) Night 4) Never

8. Chlorophylls are protected by the following from photo oxidation or photo bleaching
1) Sunlight 2) Accessory pigments 3) Water 4) CO2

9. The equation regarding photosynthesis in Bacteria is-
1) 6CO2 + 12H2S → C6H12O6+6H2O+12S
2) 6CO2 + 12H2O → C6H12O6+6H2O+6O2
3) CO2 + H2S → 2S+CH2O+H2O
4) 6CO2 + 6H2S → C6H12O6+6H2O+6S

10. Photosynthesis is-
1) Anabolic, Reduction, Exergonic reaction
2) Anabolic, Oxdiation, Endergonic reaction
3) Anabolic, Reduction, Endergonic reaction
4) Catabolic, Reduction, Exergonic reaction

11. Photosynthetic bacteria release-
1) Sulphur 2) Oxygen 3) H2O 4) C6H12O6

12. Unit of Photosynthesis is
1) Chlorophyll 2) LHC 3) Photosystem 4) P700

13. In Eukaryotic photosynthetic cells water is formed and used in photosynthesis. In Bacterial photosynthesis water is
1) Neither used not formed
2) Formed but not used
3) Not formed but used
4) Used and formed

14. During photosynthes is
1) CO2 is taken first, O2 is released next
2) O2 is taken first, CO2 is released later
3) O2 is released first, CO2 is taken later
4) Taking CO2 and releasing of O2 occur simultaneously

15. The specific function of light energy in the process of photosynthesis is to
1) Activate chlorophyll
2) Split water
3) Reduce CO2
4) Synthesise Glucose

16. Spectrophotometer is useful to measure
1) The amount of light used to produce one molecule of Glucose
2) The amount of light required to split one H2O molecule
3) The light absorbed by pigments at different wave lengths
4) The amount of Glucose produced per unit time.

17. Maximum photosynthesis occurs in
1) Sun light 2) Infra red light
3) Blue light 4) Red light

KEY : 1-3; 2-4; 3-1; 4-2; 5-4; 6-3; 7-2 8-2; 9-1; 10-3; 11- 1; 12-3; 13-2; 14-3; 15-1; 16-3; 17-4.

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