OISC Indiana Aquatic Pest Management
Exam 2026 Practice Guide
1. Algae simple without roots,
leaves, or flowers; repro-
duce by cell division, frag-
mentation, or spores; free
floating or attached to
other things
2. 3 major types of algae Microscopic, Mat forming,
chara
3. Macrophytes (algae) Chara and mat forming al-
gae
4. Chara ID Needlike leaves arranged
in whorls along a stem.
5. Describe appearance of microscopic algae blue/green or red scum
6. Microscopic algae problems water discoloration leads
to -> oxygen depletion ->
fish kills
7. Describe matforming algae mats of green hair like
strands
, OISC Indiana Aquatic Pest Management
Exam 2026 Practice Guide
8. Describe matforming algae problems smelly and slimy
9. Describe growth habits of submersed aquatic flower- live beneath the sur-
ing plants face and rooted in bot-
tom sediment, thin narrow
segmented leaves, most
of plant underwater but
most flowers above sur-
face
10. Describe the growth habits of free-floating aquatic Live unattached on or
flowering plants just below the surface,
short stems, clusters of
flat/broad leaves (duck-
weeds)
11. Describe the growth habits of rooted floating aquatic live in shallow water root-
flowering plants ed in bottom sediment,
floating/erect leaves that
extend from underground
ribosomes, showy flowers,
heavy growth can attect
recreational uses. (Water
, lotus, water lily, spatter-
dock)
12. Describe the growth habits of emergent aquatic flow- Rooted in shallow sedi-
ering plants ment, extend above water
(ex: cattails, sedges, reed
canary grass, or broad leaf
like purple loosestrife)
13. How do most aquatic flowering plants in Indiana re- Sexually by seed and
produce flower
14. What's the function of rhizomes Underground horizontal
stems for overwintering
and spreading plant; on
perennial aquatic plants
15. What's the function of stolons
Exam 2026 Practice Guide
1. Algae simple without roots,
leaves, or flowers; repro-
duce by cell division, frag-
mentation, or spores; free
floating or attached to
other things
2. 3 major types of algae Microscopic, Mat forming,
chara
3. Macrophytes (algae) Chara and mat forming al-
gae
4. Chara ID Needlike leaves arranged
in whorls along a stem.
5. Describe appearance of microscopic algae blue/green or red scum
6. Microscopic algae problems water discoloration leads
to -> oxygen depletion ->
fish kills
7. Describe matforming algae mats of green hair like
strands
, OISC Indiana Aquatic Pest Management
Exam 2026 Practice Guide
8. Describe matforming algae problems smelly and slimy
9. Describe growth habits of submersed aquatic flower- live beneath the sur-
ing plants face and rooted in bot-
tom sediment, thin narrow
segmented leaves, most
of plant underwater but
most flowers above sur-
face
10. Describe the growth habits of free-floating aquatic Live unattached on or
flowering plants just below the surface,
short stems, clusters of
flat/broad leaves (duck-
weeds)
11. Describe the growth habits of rooted floating aquatic live in shallow water root-
flowering plants ed in bottom sediment,
floating/erect leaves that
extend from underground
ribosomes, showy flowers,
heavy growth can attect
recreational uses. (Water
, lotus, water lily, spatter-
dock)
12. Describe the growth habits of emergent aquatic flow- Rooted in shallow sedi-
ering plants ment, extend above water
(ex: cattails, sedges, reed
canary grass, or broad leaf
like purple loosestrife)
13. How do most aquatic flowering plants in Indiana re- Sexually by seed and
produce flower
14. What's the function of rhizomes Underground horizontal
stems for overwintering
and spreading plant; on
perennial aquatic plants
15. What's the function of stolons
