Main directions of evolution
Answers are for parents and teachers.
1
Write four examples of aromorphosis in historical order (plants and animals).
Photosynthesis, the eukaryotic cell, seed and flower, the four-chambered heart (or warm-bloodedness).
2
To which direction does the variety of insect mouthparts belong and why?
Idioadaptation: adapted to different foods without raising the level of structure.
3
Which causes put species into regress? Write two.
Loss of habitats and pollution; overhunting and overcollection (or climate change).
4
A population doubled every year for 5 years. If it started with 20, how many are there? (Number only.)
640
5
What is the simplification of dodder’s structure linked to?
Parasitic life: food is absorbed from the host plant, so leaves and roots are not needed.