Blue Green Algae

Question 1

Division

Answer 1

Cyanophyta or Cyanobacteria

Question 2

Class

Answer 2

Cyanophyceae

Question 3

Pigmentation

Answer 3

*Chlorophyl a
*Phycoblins (blue/red)
B carotene (orange)
Xanthophylls (yellow/brown)

Question 4

Characteristics

Answer 4

No flagella

Ultra structure- prokaryotic

Question 5

Stromatolites

Answer 5

Fossil forms of blue green algae thought to be responsible for the accumulation of oxygen in earths atmosphere

Question 6

Ubiquitous

Answer 6

Grows everywhere

Question 7

Algae blooms

Answer 7

Growth in abundance to the point of water discoloration

Question 8

Nucleiod

Answer 8

Generalized prokaryotic algal cell

Question 9

Pseudovacuoles

Answer 9

Gas filled, keeps algae floating during water blooms

Question 10

Gelatinous matrix

Answer 10

Visible or not

Question 11

Reproduction can form types of spores

Answer 11

1. Favorable conditions (endospores)

2. Unfavorable conditions (exospores or akinetes)

Question 12

Akinete

Answer 12

Developing spore made up of one vegetative cell with food reserves and a hardened outer membrane

Question 13

Heterocyst

Answer 13

Nitrogen fixation (makes atm N2 usable for green plants)

Question 14

Most important N-fixers

Answer 14

Bacteria that reside or live on legume root nodules