Q.Match the columns and identify the correct option:
Column-I:

Step 1. Match (a) Thylakoids. Thylakoids are the flat, interconnected membranous sacs found inside a chloroplast's stroma, where they stack into grana; this matches Column-II item (iii), 'Flat membranous sacs in stroma'.

Step 2. Match (b) Cristae. Cristae are the folds of a mitochondrion's inner membrane projecting into its matrix, increasing the surface area available for the electron transport chain; this matches Column-II item (iv), 'Infoldings in mitochondria'.

Step 3. Match (c) Cisternae. Cisternae, in this context, are the flattened, disc-shaped membrane sacs stacked up to form the Golgi apparatus (the same term also describes the flat sacs of the endoplasmic reticulum, but the Golgi-apparatus description is the one given in Column-II); this matches item (i), 'Disc-shaped sacs in Golgi apparatus'. …

Recall the defining structural description of each of the four named parts (thylakoid, cristae, cisternae, chromatin) and match each to its correct Colu …

• Confusing cristae (mitochondrial inner-membrane infoldings) with cisternae (Golgi/ER flattened sacs) purely because the two words look and sound similar. …