Marine Ecosystems and Biodiversity

Question 1

What percent of the globe is covered in ocean?

Answer 1

70%

Question 2

What is an Ocean?

Answer 2

a continuous mass of seawater on earths surface

Question 3

What is the Sea?

Answer 3

A continuous mass of seawater that is enclosed by land

Question 4

What is an Estuary?

Answer 4

A partially enclosed tidal coastal body of water where fresh water from a river meets the salt water of the ocean

Question 5

What is an Ecosystem?

Answer 5

The living organisms and the environment with which they interact

Question 6

Biotic

Answer 6

the living parts of an ecosystem which includes the organisms and their effects on each other

Question 7

Abiotic

Answer 7

the environments geological, physical and chemical features, the non-living part of an ecosystem

Question 8

Habitat

Answer 8

the natural environment where an organism lives

Question 9

Species

Answer 9

a group of similar organisms that can interbreed naturally to produce fertile offspring

Question 10

Population

Answer 10

all the individuals of the same species that live at the same place and time

Question 11

Community

Answer 11

all the different populations occupying a habitat at the same time

Question 12

Biodiversity

Answer 12

a measure of the numbers of different species present

Question 13

Ecological niche

Answer 13

the role of a species within an ecosystem

Question 14

Mutualism

Answer 14

a relationship between two different organisms where both organisms benefit

Question 15

Parasitism

Answer 15

a relationship between two organisms where the parasite obtains benefit at the expense of the host

Question 16

Competition

Answer 16

a relationship between two organisms where both species are negatively affected by trying to fill the same ecological niche

Question 17

Predatation

Answer 17

a relationship between two organisms where a predator hunts, kills and eats a prey animal.

Question 18

Producer

Answer 18

an organism that can produce its own food energy

Question 19

Photoautotroph

Answer 19

a producer that uses light energy produce its own food energy

Question 20

Chemoautotroph

Answer 20

a producer that uses chemical energy to produce its won food energy

Question 21

Consumer

Answer 21

an animal that feeds on other organism to gain its food energy

Question 22

Food Chain

Answer 22

A way of describing the feeding relationships between organisms

Question 23

Food Web

Answer 23

a way of describing how food chains are interrelated in an ecosystem

Question 24

Trophic Level

Answer 24

a position in a food chain or web

Question 25

Predator

Answer 25

an animal that kills and eats animals for food

Question 26

Prey

Answer 26

an animal that is eaten by predators

Question 27

Shellfish

Answer 27

aquatic invertebrates that are used as food

Question 28

Keystone Species

Answer 28

a consumer that affects biodiversity to a greater extent than would be expected from its population numbers

Question 29

Shoaling

Answer 29

when fish swim together in a group

Question 30

Succession

Answer 30

the change in community structure over time

Question 31

Hydrothermal Vents

Answer 31

a gap in the earths surface that releases geothermally heated water

Question 32

Whale Fall

Answer 32

A whale that has died and sinks to the ocean floor and attracts a large variety in species for feeding