Topic 2 The World of Plants
Standard Grade Biology
World of Plants is divided into:
A- Introducing plants
B- Growing plants (Pollination, Fertilisation, Asexual reproduction)
C- Making food
There are 7 stages in the life cycle of a plant.
seed / fruit Formation
Forms a tough protective layer
Provides the embryo plant with food.
Embryo – grows into plant
Using a scalpel, carefully dissect your seed in half lengthways.
Draw a diagram of what you can see.
Identify the parts,
and label your drawing
This is an Exam Board Investigation that makes up part of your Practical Abilities grade (20% of finals)
Planning may be done in small groups but after this you must work on your own
Write in your Investigation booklet.
3Bio2 Brainstorm 16/03/07
Spacing / number of seeds
Humidity / water volume
Type of seeds
Size of seeds
Type of soil / mass
Depth of planting
Gases / oxygen levels
Measure by % germination after set time
Example of results table. Also draw a graph.
What conclusions can you draw from your experiment?
How could you have improved it?
Seeds need certain conditions to germinate:
to activate enzymes which digest stored food
Needed for the production of energy for germination
Needed for the enzymes to work effectively.
Germination is the development of a new plant from the embryo in a seed.