Lab 2: Diversity of Protists

Question 1

What are the Supergroups under the Domain: Eukarya?

Answer 1

Excavata, Chromalveolata, Unikonts, Rhizaria, Archaeplastida

Question 2

Excavates modes of nutrition:

Answer 2

heterotrophic, parasitic, or photoautotrophic

Question 3

Excavata subgroups:

Answer 3

Excavates (lack a mitochondria) and Discicristates (have modified disk-shaped mitochondrial cristae)

Question 4

What organisms could be viewed in methyl cellulose?

Answer 4

Euglena, Paramecium (NOT AMOEBAS)

Question 5

The environment of clade Euglenozoa:

Answer 5

freshwater, marine and moist terrestrial environments

Question 6

Characteristics of Euglenozoa:

Answer 6

ultrastructure of their flagella and mitochondria

Question 7

Clade Kinetoplastida notable for being:

Answer 7

Parasitic, endo-communal, free living protists

Question 8

All ciliates have these traits:

Answer 8

• Use cilia for locomotion and feeding
• Have 2 kinds of nucleus: a large macronucleus and a tiny micronucleus
• Reproduce asexually by binary fission
• Reproduce sexually by conjugation where individuals exchange haploid nuclei

Question 9

What are the most diverse, advanced and complex of the protozoans?

Answer 9

Ciliates

Question 10

Most common freshwater ciliates are:

Answer 10

Paramecia (singular Paramecium)

Question 11

What do increasing populations of Plasmodium in red-blood cells cause?

Answer 11

Red blood cells rupture

Question 12

What is diatomaceous earth and what is it used for?

Answer 12

Swimming pools, tooth paste, silver polish and insulation.

Question 13

What shapes can diatoms be?

Answer 13

Elongated, boat-shaped, pennate, bilaterally symmetrical or radially symmetrical.

Question 14

What supergroup is believed to have given rise to land plants?

Answer 14

Archaeplastida

Question 15

Where are Volvox found?

Answer 15

Ditches, puddles, shallow ponds and bogs

Question 16

What does that naked multinucleated protoplasm mean?

Answer 16

The nuclei is not seperated by a cell wall.