Question

Study the following table and identify the correct combination

• A. I, II
• B. II, III
• C. III, IV
• D. IV, I

Hint:

For organelle characteristics:
- Match organelle functions (e.g., stroma for Calvin cycle, chromoplasts for pigments).
- Know substructures (e.g., grana, stroma lamellae in chloroplasts).
- Differentiate microbodies (glyoxysomes vs. peroxisomes).

Answer 1

The Correct Option is C

Step 1: Analyze each item in List-I and match with List-II and List-III.
I. Stroma of the chloroplast
The stroma contains chloroplast DNA (circular, double stranded) and protein synthesis machinery. The “80 S ribosomes” may be a typo (chloroplasts have 70 S ribosomes), but we match based on the options.
Match: I $\rightarrow$ Circular, double stranded DNA, 80 S ribosomes.
II. Chromoplasts
Chromoplasts store carotenoid pigments (yellow/orange colors). Carotenoids are lipid-soluble, not water-soluble, but we match based on the given options.
Match: II $\rightarrow$ Carotenoid pigments, Water soluble.
III. Chloroplast
Chloroplasts have grana thylakoids (site of light reactions) and stroma lamellae (connecting grana).
Match: III $\rightarrow$ Grana thylakoids, Stroma lamellae.
IV. Microbodies
Microbodies include glyoxysomes (e.g., in seeds for fat-to-sugar conversion) and peroxisomes (e.g., in photorespiration).
Match: IV $\rightarrow$ Glyoxysomes, Peroxisomes.
Step 2: Compile the matches.
I: Circular, double stranded DNA, 80 S ribosomes.
II: Carotenoid pigments, Water soluble.
III: Grana thylakoids, Stroma lamellae.
IV: Glyoxysomes, Peroxisomes.
Step 3: Check the options.
Option (3) III, IV matches:
III: Grana thylakoids, Stroma lamellae (chloroplast).
IV: Glyoxysomes, Peroxisomes (microbodies).
Step 4: Verify option (4) as requested.
Option (4) is IV, I:
IV (Glyoxysomes, Peroxisomes): Correct.
I (Circular DNA, 80 S ribosomes): Stroma has circular DNA, but 80 S ribosomes are incorrect (chloroplasts have 70 S).
Option (4) is less accurate due to the ribosome mismatch.
Final Answer: (3) III, IV.