Communication & Humans

Question 0

What are some examples of social behaviour?

Answer 0

Defending a larger territory
Some individuals watching for danger while others feed
Fighting off predators as a group
Working as a group to hunt for food

Question 1

Animals communicate to transit information to other animals using different types of signal. Name three ways in which animals can communicate.

Answer 1

Sound
Chemical (pheromones)
Visual

Question 2

What is co-evolution?

Answer 2

A change in characteristics that is caused in one species by a change in another species.

Question 3

Give two examples where plants communicate using chemicals.

Answer 3

Communicate with pollinating animals using scent

Communicate with other plants by chemicals in the ground or in the air

Question 4

What where the 5 fossil species of human evolution?

Answer 4

Ardi - 4.4million - tree climber, walked upright

Lucy - 3.2million - walked upright face ape-like

Homo habilis - 2.4-1.4million flat - face, first tool users

Homo erectus - 1.8-0.5million - long distance walker, strongly built

Question 5

How has climate change affected human migration?

Answer 5

Ice age - walk over seas Africa to Asia
Low sea levels - walk across Asia to North America
After ice age - humans migrated north as the land became habitable

Question 6

What is Mitochondrial DNA?

Answer 6

The DNA found inside mitochondria in cells. It has several features that make it more useful than the DNA in a nucleus for tracking human migration and human evolution