Mod 2 (2)

Question 1

where did biodiversity come from

Answer 1

bio - life, diversitas - variety of

Question 2

name all levels of organisation (10)

Answer 2

1. molecule
2. cells and organelles
3. tissues
4. organs and organ system
5. organism
6. population
7. community
8. ecosystem
9. landscape
10. biosphere

Question 3

What are the ELEMENTS of biodiversity?

Answer 3

ecosystem, species, genetic

Question 4

how is biodiversity measured?

Answer 4

species richness - number of species

species evenness - abundance of species in communities

Question 5

how did life start?

Answer 5

from a simple organic molecule, started from a catalytic RNA that can self-replicate

Question 6

these are the 2 types of evidence that are used to trace history of life

Answer 6

fossil records and molecular data

Question 7

What happened in the Precambrian time?

Answer 7

1. development of early life
2. start of cyano bacteria (produces oxygen)
3. evolution of photosynthesis
4. unicellular to multicellular

Question 8

What happened in the Paleozoic era?

Answer 8

1. where skeletonized animals appeared in fossil records
2. start of colonization of land
3. diversification of life
4. near the end, the start of the end of Pangea

Question 9

What happened in the Cenozoic Era?

Answer 9

1. The era we live in right now
2. rapid increase of birds and mammals
3. Pleistocene Epoch
   - most living species evolve
   - climate changes
   - land bridges
   - megafaunal extinction (hunted down)

Question 10

What is the lineage that diverged from the chimpanzees?

Humans arose from what group of primates?

Answer 10

Hominins

Catarrhine

Question 11

What happened in the Mesozoic era?

Answer 11

1. age of reptiles
2. rise of angiosperms/flowering plants
3. increase in pollinating species
4. start of mammals