Laboratory work 2. Evolutionary ideas
Answers are for parents and teachers.
1
Which traits would you record to compare two plants in the lab table? Name five.
Leaf shape, leaf length, venation, leaf arrangement, shape of flower or fruit.
2
Leaf lengths (cm): 5, 7, 6, 8, 9. Find the mean. (Number only.)
7
3
Write a conclusion on the relativity of the morphological criterion.
There are differences within a species and different species can look alike; so other criteria are needed.
4
Write one scientist and his contribution for antiquity, medieval Central Asia and the 18th century.
Aristotle – classification of animals; Ibn Sina – the “Canon of Medicine”; Linnaeus – systematics of plants and animals (next lesson).
5
Why did the medieval view that species do not change later change?
New species were discovered, fossils found, classification and the microscope developed; facts demanded an explanation of change in species.