he major groups of microorganisms—namely bacteria, archaea, fungi (yeasts and molds), algae, protozoa, and viruses—are summarized below. Links to the more detailed articles on each of the major groups are provided.

1. 1. The protist that reproduces both
by binary fission and conjugation is
A. Amoeba
B. Euglena
C. Paramecium
D. Monocystis

2. 2. A few protists possess structures
to regulate their water content.
They are
(a) membranes
(b) Chromatophores
(c) Nuclei
(d) Contractile vacuoles

3. 4. Pick the wrong statement
(a) Diatoms are primarily produced in the
oceans
(b) Diatoms are microscopic and float
passively in the water
(c) Walls of diatoms are destructible easily
(d) Diatomaceous earth is formed by the cell
walls of diatoms

4. Whorling whips are named so because
of
(a) Type of nucleus
(b) Mode of movement
(c) Mode of reproduction
(d) Mode of nutrition

5. 5.

6. 6.

7. What is the primary role of a mushroom’s
underground mycelium?
A. ABSORBING NUTRIENTS
B. ANCHORING
C. SEXUAL REPRODUCTION
D.ASEXUAL REPRODUCTION