Match Column I with Column - II and select the correct answer using the codes given below :
Column - I: Column - II
A. Nucleolus - (i) Lipid Storage
B. Spherosome - (ii) Glycolate metabolism
C. Plasmodesmata - (iii) rRNA synthesis
D. Peroxisome - (iv) Transport of macromolecules

Question

Match Column I with Column - II and select the correct answer using the codes given below :
Column - I: Column - II  
A. Nucleolus - (i) Lipid Storage
B. Spherosome - (ii) Glycolate metabolism
C. Plasmodesmata - (iii) rRNA synthesis 
D. Peroxisome - (iv) Transport of macromolecules

Accepted Answer

The correct option is 1: A (iii), B (i), C (iv), D (ii).

This option correctly pairs each cellular component in Column I with its established biological function in Column II. The **Nucleolus (A)** is the non-membrane-bound sub-organelle within the nucleus where the genes for ribosomal RNA (**rRNA**) are transcribed, processed, and where ribosomal subunits are first assembled; hence, it matches with (iii) rRNA synthesis. **Spherosomes (B)** are specialized microbodies in plant cells, often originating from the endoplasmic reticulum, which are primarily tasked with the synthesis and storage of neutral fats and **lipids**; hence, they match with (i) Lipid Storage. **Plasmodesmata (C)** are minute cytoplasmic bridges that pass through the cell walls, directly connecting the cytoplasm of adjacent plant cells, which facilitates the passive and active flow, including the regulated **transport of macromolecules** (like specific proteins and RNA), across cells; hence, they match with (iv) Transport of macromolecules. Finally, **Peroxisomes (D)** are single membrane-bound organelles that, in plant leaves, play a vital role in **glycolate metabolism**, which is the process of photorespiration where the toxic byproduct glycolate is converted, collaborating with chloroplasts and mitochondria; hence, they match with (ii) Glycolate metabolism.

The incorrect option is 2: A (iv), B (i), C (ii), D (iii).
This option contains two critical misalignments. It incorrectly associates the Nucleolus (A) with (iv) Transport of macromolecules and the Peroxisome (D) with (iii) rRNA synthesis. The core function of the Nucleolus is ribosome biogenesis (rRNA synthesis), not cell-to-cell transport; that role belongs to the Plasmodesmata. Conversely, the Peroxisome is a metabolic organelle involved in processes like detoxification and glycolate metabolism, not the synthesis of ribosomal RNA, which occurs exclusively in the Nucleolus. While it correctly pairs Spherosome with Lipid Storage, the fundamental errors in the pairings for A and D invalidate this choice.

The incorrect option is 3: A (iii), B (ii), C (iv), D (i).
This option incorrectly swaps the primary functions of two key organelles, the Spherosome (B) and the Peroxisome (D). It matches **Spherosome (B)** with (ii) Glycolate metabolism and **Peroxisome (D)** with (i) Lipid Storage. As we established, Spherosomes are the principal storage site for lipids and fats in plant cells, making (i) the correct match for B. Peroxisomes are the metabolic centers that handle glycolate in photorespiration, making (ii) the correct match for D. Because it swaps the functions of these two organelles, despite correctly pairing the Nucleolus (A) and Plasmodesmata (C), this option is incorrect.

The incorrect option is 4: A (ii), B (iii), C (i), D (iv).
This option completely misrepresents the functions of all four cellular structures, showing a major misunderstanding of cell biology. It pairs the Nucleolus (A) with (ii) Glycolate metabolism, which is a peroxisomal function. It pairs the Spherosome (B) with (iii) rRNA synthesis, which is the nucleolus's role. It incorrectly assigns the Plasmodesmata's function to Lipid Storage (i) and the Peroxisome's function to Transport of macromolecules (iv). Because none of the pairings reflect the established, core biological roles of these organelles, this option is factually wrong in every respect.