Question

1. what is the structure called at #1 *

options: stroma, thylakoid, lamellae, cytoplasm, granum

Explanation:

The diagram shows a chloroplast. Structure #1 connects different grana (stacks of thylakoids). Lamellae (or intergranal lamellae) are the structures that connect adjacent grana. Stroma is the fluid - filled space, thylakoid is a single disc, cytoplasm is in the cell (not chloroplast - specific here), and granum is a stack of thylakoids. So the structure at #1 is Lamellae.

Answer:

C. Lamellae