What gave rise to O2?

Microscopic organism no longer extant

How was the ozone layer created?

It occurred in a spontaneous manner

Quiz

James Hernandez 10 questions

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1Around when did early life arise on Earth?
1. ABetween 3.5 and 2.5 bya
2. B4 bya
3. C3.5 bya
4. D2 bya
5. Ebetween 2 and 2.5 bya
2Was the ancient earths atmosphere highly reducing and very hot?
1. ATrue
2. BFalse
3Early life was anaerobic and most likely thermophilic
1. ATrue
2. BFalse
4What gave rise to O2?
1. Acyanobacteria
2. BOxidation of iron
3. CMicroscopic organism no longer extant
4. DThermo vents
5How was the ozone layer created?
1. AOxygen reacted with UV
2. BIt occurred in a spontaneous manner
3. COxygen reacted with ozone
4. DDecomposition of cyanobacteria
6What are the components of phylogenetic trees?
1. ARoots
2. Bstems
3. Cleaves
4. Dnodes
5. Ebrances
7Branch length represents the number of changes that have occurred along that branch?
1. ATrue
2. BFalse
8The terms monophyletic and polyphyletic can only apply at the genus and species levels
1. ATrue
2. BFalse
9Monophyletic groups will always possess the similar phenotypes
1. ATrue
2. BFalse
10Early branches indicate that the organism is primitive
1. ATrue
2. BFalse

Description: Quiz on Microbial evolution and systematics , created by James Hernandez on 10/04/2021.
Author: James Hernandez
Language: English
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