This candidate identifies all 4 methods of seed dispresal for the seeds shown
Correctly explains why each of the three
environmental conditions are needed for
germination.
This candidate correctly explains how both primary growth and secondary growth
occur in the plant. They also discuss the importance of these two types of growth
to the plants. In doing this they explain the difference between primary and
secondary growth.
This candidate identifies the leaf as variegated and links the starch test to the area where
photosynthesis takes place. This was explained in terms of the starch being produced in the
areas where chlorophyll is found and links this to where in this leaf photosynthesis takes place.
They also correctly identify the other areas not having chlorophyll and therefore not
photosynthesizing so no starch is formed.
Identifies the chloroplast as the organelle
involved in photosynthesis.
Identifies the epidermal layer as responsible for protection.
Identifies the palisade cells contain chloroplasts responsible
for photosynthesis.
The spongy mesophyll cells arrangement allowing for carbon dioxide into the plant and oxygen out. The
stomata are also identified as important for photosynthesis. The upper epidermis is transparent to allow
sunlight to reach the chloroplasts. The shape of the stomata linked to the guard cells and the control of
carbon dioxide into the leaf is explained.