DIFFUSION
(3 points)

What happens as an organism gets bigger?

Features of the perfect exchange surface
-------------

LARGE SURFACE AREA

Features of the perfect exchange surface
-------------

THIN

Features of the perfect exchange surface
-------------

DIFFUSION GRADIENT

MAMMALIAN LUNGS
-------------

LARGE SURFACE AREA
(1 point)

MAMMALIAN LUNGS
-------------

THIN
(1 point)

MAMMALIAN LUNGS
-------------

DIFFUSION GRADIENT
(2 points)

MAMMALIAN LUNGS
-------------

PROTECTION FROM DRYING OUT
(3 points)

PLANT LEAVES
-------------

LARGE SURFACE AREA
(2 points)

PLANT LEAVES
-------------

THIN
(3 points)

PLANT LEAVES
-------------

CONCENTRATION GRADIENT
(2 points)

PLANT LEAVES
-------------

PROTECTION FROM DRYING OUT
(2 points)

What is the role of macrophages in the lungs?
(2 points)

CARTILAGE
-------------

DISTRIBUTION
(2 points)

CARTILAGE
-------------

FUNCTION
(1 point)

SMOOTH MUSCLE
-------------

DISTRIBUTION
(3 points)

SMOOTH MUSCLE
-------------

FUNCTION
(1 points)

ELASTIC FIBRES
--------------

DISTRIBUTION
(4 points)

ELASTIC FIBRES
--------------

FUNCTION
(1 point)

GLOBLET CELLS
-------------

DISTRIBUTION
(3 points)

GLOBLET CELLS
-------------

FUNCTION
(1 point)

CILIATED EPILTHELIUM
--------------

DISTRIBUTION
(4 points)

CILIATED EPITHELIUM
--------------

FUNCTION
(1 point)