A bivalent consist of four chromatids and two centromeres. Bivalent is a pair of homologous chromosome lying together in the zygotene stage of prophase I of first meiotic division.
So, the correct option is (C): four chromatids and two centromeres.
A bivalent denotes a pair of two homologous chromosomes. Although each chromosome consists of two chromatids, there are a total of four chromatids and two centromeres, with each centromere positioned at the center.

So, the correct option is (C): four chromatids and two centromeres.
| Column I | Column II | |
|---|---|---|
| A. | Thylakoids | (i) Disc-shaped sacs in Golgi apparatus |
| B | Cristate | (ii) Condensed structure of DNA |
| C | Cisternae | (iii) Flat membranous sacs in stroma |
| D | Chomatin | (iv) Infolding in mitochondria |
| A | B | C | D | |
|---|---|---|---|---|
| (1) | (v) | (iv) | (viii) | (iii) |
| (2) | (i) | (iv) | (viii) | (vi) |
| (3) | (vi) | (v) | (iv) | (vii) |
| (4) | (v) | (i) | (iii) | (ii) |
Read More: Fundamental Unit of Life: Cell
The different parts of a cell and their functions are as follows:
