2.5 ultrastructure of plant cells

Question 1

Chloroplasts def/function and structure

Answer 1

Organelles found in plants and algae that are the site of photosynthesis.

structure: double membrane bound. encloses a fluyid called stroma. Thylakoid sacs form granum/grana wich contain the chlorophyl pigments

Question 2

Cell wall

Answer 2

freely permeable, made up of cellulose, provides rigid support and defence

Question 3

Large and permanent Vacuole

Answer 3

cell sap storage. Large and permanent. Bound by a membrane :tonoplast, selectively permeable

Question 4

plasmodesmata

Answer 4

gaps between cell walls which allow. communication and flow of substances such as minerals between the cells.