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Salmon: Facts

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

What kind of fish are salmon?

a)

Anadromous

b)

Catadromous

c)

Diadromous

d)

Triadromous

2.

Salmon's closest relatives are which kind of fish?

a)

Bluegill

b)

Electric Eel

c)

Steelhead

d)

Tuna

3.

What is the name of the salmon part that allows it to sense vibration, motion, and sound?

a)

Gills

b)

Lateral line

c)

Opercula

d)

Olfactory receptors

4.

The youngest salmon just hatched from an egg is called a(n)...

a)

alevin

b)

fry

c)

smolt

d)

zooplankton

5.

The change that smolts go through to transition from fresh to salt water is called...

a)

homing

b)

migration

c)

puberty

d)

smoltification

6.

What is the purpose of parr marks?

a)

Camouflage

b)

Eating

c)

Mating

d)

Migrating

7.

Who makes the depression for the eggs?

a)

The female salmon

b)

The male salmon

8.

How have humans attempted to help the salmon migration?

a)

By building dams

b)

By building fish ladders

c)

By building turbines

9.

How many years will salmon swim in the open oceans before returning to spawn?

a)

6 months - 1 year

b)

2 - 5 years

c)

10 - 15 years

d)

20 - 25 years

10.

Salmon is found most abundantly and in more species in this ocean.

a)

Atlantic

b)

Pacific

11.

What part did the salmon have that we humans don't?

a)

liver

b)

stomach

c)

swim bladder

d)

heart

12.

What structure in the salmon was the largest?

a)

liver

b)

stomach

c)

swim bladder

d)

heart

13.

What structure inflates and deflates to regulate the buoyancy of the fish?

a)

liver

b)

heart

c)

intestines

d)

swim bladder

14.

What was the gender of the fish you virtually dissected?

a)

male

b)

female

15.

What structure did the salmon NOT have in common with a Monarch butterfly?

a)

heart

b)

liver

c)

eyes

d)

eggs