Fish Biology and Marine Ecosystems Quiz Questions

Jawless fish example

Lamprey

Jawed fish example

Ray

Primary function of gills

Gas exchange

Gill covering

Operculum

Feature of bony fish

Swim bladder

Lateral line function

the detection of water movement, vibration, and pressure in the water surrounding an animal

Function of mucus on fish

Protection from parasites

Type of scale on bony fish

Cycloid

Body shape of fast swimmers

Fusiform

Countershading definition

Dark top, light bottom; open ocean

Purpose of disruptive coloration

To confuse predators by breaking up the outline making it difficult for predators to identify and target them

Aposematic coloration purpose

Signaling danger to predators

Cryptic coloration purpose

Blending into the environment

False eye spot purpose

To mislead predators

Chromatophores definition

Color-changing cells

Iridophore definition

A reflective cell for coloration

Symmetrical tail type

Homocercal

what is it called when the egg is hatch inside the body

Ovoviviparous

Anadromous fish example

Salmon fish like this anadromous, in which adult fish live in the sea and migrate into fresh water to spawn

Directional term toward the head

Cranial

Caudal

Referring to the tail end of an organism.

Ventral

Referring to the belly or underside of an organism.

Cranial

Referring to the head end of an organism.

Dorsal

Referring to the back side of an organism.

Dorsal fin

The fin located on the back of a fish.

Caudal fin

The tail fin of a fish.

where the Pectoral fin

The fin located on the sides of a fish.

Anal fin

The fin located on the underside of a fish near the tail.

Oceans recognized

five commonly recognized oceans

Bay vs Gulf

A gulf is generally larger than a bay.

Smallest ocean

The Arctic Ocean is the smallest.

what does Arctic mean

The term 'Arctic' derives from the word for 'bear'.

Difference between Arctic and Antarctic

The Arctic is an ocean, while the Antarctic is a continent.

why are Southern Ocean nutrient richness

The process of upwelling makes it nutrient-rich.

Large groups of krill

Large groups of krill are called swarms.

Krill meaning in Norwegian

In Norwegian, 'krill' means tiny fry of fish.

Hope for polar bears

Increased krill gives hope that polar bears might survive warming.

how are Plankton classification

Plankton are primarily classified by size, type, and time spent drifting.

what are Phytoplankton

Phytoplankton are microscopic marine algae.

Zooplankton

Zooplankton are animal-like drifters.

how do Plankton move

Plankton can control movement both horizontally and vertically.

what are Nekton

Nekton are active swimmers in the ocean that can swim against the current and include a variety of organisms such as fish, squid, and marine mammals.

Holoplankton

Holoplankton are organisms that are planktic (they live in the water column and cannot swim against a current) for their entire life cycle

What is a plankton floating adaptation?

Spines and oil droplets help plankton float.

Most abundant zooplankton in temperate waters.

Copepods are the most abundant zooplankton in temperate waters.

Marine snow

Marine snow refers to sinking organic matter.

why are Penguins’ flightlessness reason

Penguins might be flightless to swim better.

Narwhal habitat

The narwhal is found in the Arctic.

IUCN

IUCN stands for International Union for Conservation of Nature.

Purpose of CITES

CITES aims to regulate trade in endangered species.