Protista 2

Question 1

Stramenophiles

Answer 1

A diverse group including the diatoms, brown algae, and water moulds

Question 2

Characteristic of Stramenophiles

Answer 2

	Eukaryotes- unicellular/ multicellular or aggregate cells
	Photoautotroph- chlorophyll
	One or more chloroplast
	Heterotroph
	Aquatic 
	Terrestrial

Question 3

Phaeophyta ( brown algae)

Answer 3

 Multicellular
 Cell wall- Cellulose + alginic acid
 Chlorophyll a + c, xanthophylls

Question 4

Rhodophyta ( red algae)

Answer 4

 Multicellular
 Cell wall- cellulose
 Chlorophyll a & d, phycobiliproteins

Question 5

Chlorophyta ( green algae)

Answer 5

 Unicellular / Multicellular
 Cell wall - cellulose
 Chlorophyll a & b
 Gave rise to plants

Question 6

Bacillariophyta (diatoms)

Answer 6

• Unicellular
• Cell wall- PECTIN AND SILICA
• Chlorophyll a & c, carotene, xanthophylls
• Stores oil =))))

Question 7

Dianoflagellates (a)

Answer 7

 Phylum Pyrrophyta
 Two flagella
- One acts as a rudder (bánh lái), the other provides propulsion ( lực đẩy) by spinning
 Most are autotrophic ( but some are heterotrophs)
- Marine free living and also as coral symbionts (zooxanthellae)

Question 8

Dianoflagellates (b)

Answer 8

 Store excess food as starch
 Have cell walls
- Often also ‘ armour plating” (áo giáp mạ) on living species

Question 9

Dianoflagellata

Answer 9

 Unicellular
 Plasma membrane- cellulose
 Chlorophyll a & c, carotene
 Symbionts in marine animals
E.g : An armour- plated dinoflagellate, Peridinium
- Red tides caused by a dinoflagellate bloom

Question 10

Oomycota ( Water molds)

Answer 10

 Multicellular
 cell wall- cellulose
 CHEMOHETEROTROPHIC
 decomposers

Question 11

Slime moulds (a)

Answer 11

 Start off as amoeboid BUT form plasmodia ( many nuclei but no cell membranes) when they find a rich source of food (bacteria on rotting wood is a favourite)

Question 12

Slime moulds (b)

Answer 12

 Plasmodia can be very large (metres long)

 These form fruiting bodies that look like fungal “ mushrooms” but they actually release amoeboid cysts