#B3.2.1
describe some of the substances transported into and out of photosynthetic organisms in terms of the requirements of those organisms, including oxygen, carbon dioxide, water and mineral ions
#B3.2.2
a) explain how substances are transported into and out of cells through diffusion, osmosis and active transport
b) describe practical investigations into the processes of diffusion and osmosis
PAG8
Learners are not expected to explain osmosis in terms of water potential
#B3.2.3
explain how the partially-permeable cell membranes of plant cells and prokaryotic cells are related to diffusion, osmosis and active transport
#B3.2.4
explain how water and mineral ions are taken up by plants, relating the structure of the root hair cells to their function
#B3.2.5
a) explain how the structure of the xylem and phloem are adapted to their functions in the plant
b) describe how to use a light microscope to observe the structure of the xylem and phloem
PAG1
#B3.2.6
a) describe the processes of transpiration and translocation, including the structure and function of the stomata
b) describe how to use a light microscope to observe the structure of stomata
PAG1
c) describe how to use a simple potometer
PAG6
Learners are not expected to describe transpiration in terms of tension or pressure, and are not expected to describe translocation in terms of water potential or hydrostatic pressure
#B3.2.7
a) explain the effect of a variety of environmental factors on the rate of water uptake by a plant, to include light intensity, air movement, and temperature
b) describe practical investigations into the effect of environmental factors on the rate of water uptake by a plant
PAG6
#B3.2.8
in the context of water uptake by plants:
a) use simple compound measures such as rate
b) carry out rate calculations
c) plot, draw and interpret appropriate graphs
d) calculate percentage gain and loss of mass