Quiz about Trout Life Cycle

Question 1

Trout are members of the _____ family

Accepted Answer

Salmonids

Answer

Iteroparous

Answer

Ichthyologist

Answer

Ichthyology

Answer

salmon

Question 2

Trout can spawn more than once in their life - meaning they are ____.

Accepted Answer

Iteroparous

Answer

Salmonids

Answer

Ichthyologist

Answer

Ichthyology

Answer

salmon

Question 3

The study of fish

Accepted Answer

Ichthyology

Answer

Salmonids

Answer

Iteroparous

Answer

Ichthyologist

Answer

salmon

Question 4

A person who studies fish

Accepted Answer

Ichthyologist

Answer

Salmonids

Answer

Iteroparous

Answer

Ichthyology

Answer

salmon

Question 5

_____ means they can't have babies/offpsring; these trout are released for educational purposes and for fishing

Accepted Answer

sterile

Answer

introduced

Answer

outcompete

Answer

Rocky Mountains

Answer

freshwater

Question 6

Trout are in the same family as chars, whitefish, graylings and ____

Accepted Answer

salmon

Answer

Salmonids

Answer

Iteroparous

Answer

Ichthyologist

Answer

Ichthyology

Question 7

Rainbow trout have been _____ to rivers and lakes east of the Rocky Mountains

Accepted Answer

introduced

Answer

sterile

Answer

outcompete

Answer

Rocky Mountains

Answer

freshwater

Question 8

Sterile trout are introduced so they do not ____ native fish populations

Accepted Answer

outcompete

Answer

sterile

Answer

introduced

Answer

Rocky Mountains

Answer

freshwater

Question 9

Rainbow trout are native to rivers and lakes in North America -- west of the _____

Accepted Answer

Rocky Mountains

Answer

sterile

Answer

introduced

Answer

outcompete

Answer

freshwater

Question 10

Trout live in ____ lakes and streams

Accepted Answer

freshwater

Answer

sterile

Answer

introduced

Answer

outcompete

Answer

Rocky Mountains

Question 11

A female rainbow trout deposits 2,000 ____ in a redd.

Accepted Answer

eggs

Answer

alevin

Answer

fry

Answer

fingerling

Answer

parr

Question 12

Newly hatched trout

Accepted Answer

alevin

Answer

eggs

Answer

fry

Answer

fingerling

Answer

parr

Question 13

Trout stage after alevin, they swim close to the water surface

Accepted Answer

fry

Answer

eggs

Answer

alevin

Answer

fingerling

Answer

parr

Question 14

Trout stage folowing fry, when the trout are 2-5 inches in length

Accepted Answer

fingerling

Answer

eggs

Answer

alevin

Answer

fry

Answer

parr

Question 15

Stage when the trout begins to form large dark markings

Accepted Answer

parr

Answer

eggs

Answer

alevin

Answer

fry

Answer

fingerling

Question 16

Trout eggs have ____ eggs and a central line

Accepted Answer

black

Answer

camouflaged

Answer

redd

Answer

oxygen

Answer

birth place

Question 17

Trout eggs are _____ in gravel, so the parents can leave the eggs to develop on their own

Accepted Answer

camouflaged

Answer

black

Answer

redd

Answer

oxygen

Answer

birth place

Question 18

Female trout dig a foot deep nest or a _____ in the gravel to lay eggs

Accepted Answer

redd

Answer

black

Answer

camouflaged

Answer

oxygen

Answer

birth place

Question 19

Trout eggs absorb____ through their shell

Accepted Answer

oxygen

Answer

black

Answer

camouflaged

Answer

redd

Answer

birth place

Question 20

Trout always return to their home stream or _____ to spawn

Accepted Answer

birth place

Answer

black

Answer

camouflaged

Answer

redd

Answer

oxygen

Question 21

Once hatched, the alevins use their ____ is used as a food source. For 1-6 weeks, this food is absorbed into the belly.

Accepted Answer

yolk sac

Answer

buttoning up

Answer

adult

Answer

color

Answer

colder

Question 22

Occurs when the alevin absorb their yolk sac and begins to feed on zooplankton

Accepted Answer

buttoning up

Answer

yolk sac

Answer

adult

Answer

color

Answer

colder

Question 23

A juvenille trout resembles an ____ trout but it is smaller. The ____ trout live in streams and eat insects, crustaceans, and other fish.

Accepted Answer

adult

Answer

yolk sac

Answer

buttoning up

Answer

color

Answer

colder

Question 24

Trout turn vibrant in _____ when they are ready to spawn

Accepted Answer

color

Answer

yolk sac

Answer

buttoning up

Answer

adult

Answer

colder

Question 25

It takes longer for trout eggs to hatch in ____ water.

Accepted Answer

colder

Answer

yolk sac

Answer

buttoning up

Answer

adult

Answer

color

Question 26

Once a juvenile, the trout avoids predators by hiding in underwater ____ and brush

Accepted Answer

roots

Answer

autumn

Answer

gravel

Answer

time

Answer

temperature

Question 27

Adult rainbow trout spawn in _____

Accepted Answer

autumn

Answer

roots

Answer

gravel

Answer

time

Answer

temperature

Question 28

Alevin stay close to the ____ to avoid predators

Accepted Answer

gravel

Answer

roots

Answer

autumn

Answer

time

Answer

temperature

Question 29

Trout know when it is _____ to spawn

Accepted Answer

time

Answer

roots

Answer

autumn

Answer

gravel

Answer

temperature

Question 30

Depending on water ____, trout eggs will hatch in 20-100 days.

Accepted Answer

temperature

Answer

roots

Answer

autumn

Answer

gravel

Answer

time

Question 31

Trout prefer temperatures between _____ and 55 degrees Fahrenheit.

Accepted Answer

fifty

Answer

inches

Answer

percent

Answer

three

Answer

twelve

Question 32

Adult rainbow trout can grow up to 20-30 ____ in length and weigh up to 53 pounds

Accepted Answer

inches

Answer

fifty

Answer

percent

Answer

three

Answer

twelve

Question 33

Only 5-10 ____ of trout live to spawn. Many are eaten, die due to disease or lack of food or lack of oxygen.

Accepted Answer

percent

Answer

fifty

Answer

inches

Answer

three

Answer

twelve

Question 34

Trout make the trip to spawn when they are

____ - 4 years old.

Accepted Answer

three

Answer

fifty

Answer

inches

Answer

percent

Answer

twelve

Question 35

Rainbow trout live an average of 4-6 years but can live up to ___ years.

Accepted Answer

twelve

Answer

fifty

Answer

inches

Answer

percent

Answer

three

Question 36

____ can leave the water levels too low to spawn... sometimes, the water temperature increases when this happens

Accepted Answer

droughts

Answer

food source

Answer

waterfalls

Answer

pollution

Answer

predators

Question 37

Trout are a good ___ for birds of prey, bears, bigger fish, and humans

Accepted Answer

food source

Answer

droughts

Answer

waterfalls

Answer

pollution

Answer

predators

Question 38

Swimming upstream to their spawning grounds, trout must overcome obstacles like ___ and dams

Accepted Answer

waterfalls

Answer

droughts

Answer

food source

Answer

pollution

Answer

predators

Question 39

Trout must overcome human impacts along their journey such as ____

Accepted Answer

pollution

Answer

droughts

Answer

food source

Answer

waterfalls

Answer

predators

Question 40

Trout must also evade ____ while on their journey to their spawning grounds

Accepted Answer

predators

Answer

droughts

Answer

food source

Answer

waterfalls

Answer

pollution

Question 41

During the parr stage, trout eat macroinvertebrates such as ____ and stonefly nymphs

Accepted Answer

mayfly

Answer

rainbow

Answer

swim bladder

Answer

spawn

Answer

milt

Question 42

______trout are torpedo-shaped, blue-green or yellow-green in color, with a pink stripe along their sides, white underbelly, and a small black dots on their backs and fins

Accepted Answer

rainbow

Answer

brook

Answer

brown

Answer

sea trout

Question 43

Structure inside a trout that fills with air so it can float

Accepted Answer

swim bladder

Answer

mayfly

Answer

rainbow

Answer

spawn

Answer

milt

Question 44

Juvenile trout are not old enough or big enough to ____ or have babies

Accepted Answer

spawn

Answer

mayfly

Answer

rainbow

Answer

swim bladder

Answer

milt

Question 45

Male trout release ____ or sperm over the eggs to fertilize them

Accepted Answer

milt

Answer

mayfly

Answer

rainbow

Answer

swim bladder

Answer

spawn

Question 46

One female rainbow trout will deposit approximately ____ eggs in the redd; many of these will not survive.

Accepted Answer

2000

Answer

500

Answer

100

Answer

25

Question 47

Many trout eggs do not survive because ____

Accepted Answer

predators such as other fish, humans, bears, and birds

Accepted Answer

water temperature increases or a drought occurs

Accepted Answer

not all are fertilized

Accepted Answer

human impact - example ATV disturbs the redd, or the grass has been mowed causing the insects to decrease in number

Accepted Answer

oxygen can not get to the eggs because silt has covered the eggs

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