Question

1. in the internal organization of a plant, which is the smallest unit that contains all of the materials needed to conduct photosynthesis?

thylakoid
call
leaf
chloroplast

Explanation:

Chloroplasts are the organelles in plant cells that contain chlorophyll and other necessary components for photosynthesis. A thylakoid is part of a chloroplast (site of light - dependent reactions but not the whole unit for photosynthesis). A leaf is an organ made of many cells. A cell is more complex than a chloroplast in terms of overall plant organization for photosynthesis as the chloroplast is the specific organelle within the cell dedicated to photosynthesis. Chloroplast has all the materials (chlorophyll, enzymes, etc.) needed for the process of photosynthesis (light - dependent and light - independent reactions when considering the stroma and thylakoids together within the chloroplast).

Answer:

Chloroplast