2 - cells

Question 1

A student used an optical microscope to observe a piece of tissue from the lower surface of an orchid leaf. The piece of leaf tissue observed was very thin.

Explain why this was important.

Answer 1

Single/few layer(s) of (cells/tissue);
So light can pass through

Question 2

Biological drawing

Answer 2

Use single/continuous/joined lines
Do not use shading/hatching;
Show magnification/scale bar
Show labels/ annotations/title