86. Match photosynthetic proteins (List I) with the respective encoding genes (List II)
LIST I                                                                          LIST II
A. D 1                                                                           I. psbB
B. D2                                                                           II. psbD
C. P47                                                                         III. psbC
D. CP43                                                                     IV. psbA
Choose the correct answer from the options given below:
1. A-III, B-IV, C-II and D-I
2. A-IV, B-II, C-I and D-III
3. A-I, B-III, C-IV and D-II
4. A-II, B-I, C-III and D-IV

 

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Photosynthetic Proteins and Their Encoding Genes

In photosynthesis, a series of proteins work together to capture light energy and convert it into chemical energy. Each of these proteins is encoded by specific genes. Here we will match the photosynthetic proteins to their respective encoding genes.

Match List I with List II

• A. D1
  The D1 protein is a core component of the photosystem II (PSII) complex, which is essential for the process of splitting water molecules during photosynthesis. The gene encoding the D1 protein is psbA.

• B. D2
  The D2 protein also forms part of the photosystem II complex, working alongside the D1 protein to facilitate the light-dependent reactions. The gene encoding the D2 protein is psbD.

• C. P47
  The P47 protein is involved in the structure of the photosystem II complex, stabilizing the assembly. The gene encoding the P47 protein is psbC.

• D. CP43
  The CP43 protein is another important protein in the photosystem II complex, contributing to light harvesting. The gene encoding the CP43 protein is psbB.

Correct Answer: Option 2

The correct match is:

• A-IV (D1 → psbA)

• B-II (D2 → psbD)

• C-I (P47 → psbC)

• D-III (CP43 → psbB)

So, the answer is Option 2: A-IV, B-II, C-I and D-III.

Explanation:

Each protein in the photosystem II complex is encoded by a specific gene, and the correct matching ensures proper functioning of the photosynthetic machinery in plants.

Conclusion

The photosynthetic proteins play a crucial role in energy conversion during photosynthesis, and understanding the genes that encode them is essential for studying plant biology. The correct pairing of photosynthetic proteins and their encoding genes helps elucidate the molecular mechanisms behind photosynthesis in plants.