Multicellular diversity: Algae

Question 1

What evolutionary links do algae represents

Answer 1

Protist and plants
-Some classify green algae in plant kingdom, some classify it in the protist

Question 2

What are the 3 main algae phylum and colour

Answer 2

Phylum Phaeophyta (BROWN)
Phylum Rhodophyta (RED)
Phylum Chlorophyta (GREEN)

Question 3

Describe Phylum Phaeophyta

Answer 3

Phylum Phaeophyta (BROWN)
-Is large and diverse
-Is a species of kelp that can grow up to 60m
-Provides food and shelter to many marine organism
-Brown algae DO NOT HAVE TRUE ROOTS OR LEAVES
-They DO HAVE SPECIALIZED TISSUE

Question 4

What is a holdfast and its functions

Answer 4

-Holdfast anchors the algae while a stipe extends from the holdfast
-From the stipe grow flat, leaf-like photosynthetic blades
-If you cut the leafs in a criss cross section it looks like a blade

Question 5

Describe Phylum Rhodophyta

Answer 5

Phylum Rhodophyta (RED)
-One of the first multicellular species on earth
-Live in warm costal waters at shallow and deep depths
-Contain RED and GREEN pigment called PHYCOERYTHRIN
-Red algae can be used in foods (seaweed) and additives (thickener for ice cream)

Question 6

Describe Phylum Chlorophyta

Answer 6

-Live in habitats such as festwater, salt water, sea ice, tree surface and furs of sloths
-UNICELLULAR AND MULTICELLULAR
-Resemble plants with cell wall compromised of cellulose