Unit 1 Exam

Question 1

Abiotic factors

Answer 1

An abiotic factor is a non-living part of an ecosystem that shapes its environment.

Question 2

Biome

Answer 2

A biome is a large community of vegetation and wildlife adapted to a specific climate.

Question 3

Biosphere

Answer 3

worldwide sum of all ecosystems

Question 4

Consumer

Answer 4

A consumer in a food chain is a living creature that eats organisms from a different population. A consumer is a heterotroph and a producer is an autotroph.

Question 5

Detritivore

Answer 5

an organism (such as an earthworm or a fungus) that feeds on dead and decomposing organic matter.

Question 6

Ecological niche

Answer 6

position of a species within an ecosystem, describing both the range of conditions necessary for persistence of the species, and its ecological role in the ecosystem.

Question 7

Ecology

Answer 7

Ecology is the study of the relationships among living organisms, including humans, and their physical environment.

Question 8

Ecosystem

Answer 8

An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.

Question 9

Environment

Answer 9

the circumstances, objects, or conditions by which one is surrounded. : the complex of physical, chemical, and biotic factors (such as climate, soil, and living things) that act upon an organism or an ecological community and ultimately determine its form and survival.

Question 10

Food chain

Answer 10

the order of events in an ecosystem, where one living organism eats another organism, and later that organism is consumed by another larger organism. The flow of nutrients and energy from one organism to another at different trophic levels forms a food chain.

Question 11

Food web

Answer 11

A food web consists of all the food chains in a single ecosystem.

Question 12

Habitat

Answer 12

A habitat is a place where an organism makes its home. A habitat meets all the environmental conditions an organism needs to survive

Question 13

Interspecific

Answer 13

Competition existing or occurring between different species.

Question 14

Intraspecific

Answer 14

Competition between the same species

Question 15

Microhabitat

Answer 15

a habitat which is of small or limited extent and which differs in character from some surrounding more extensive habitat. An example of a microhabitat would be the cool, dark and moist conditions provided underground for ants, worms, and moles. A single tree contains multiple microhabitats

Question 16

Mutualism

Answer 16

Mutualism is a type of symbiotic relationship where all species involved benefit from their interactions.

Question 17

Parasitism

Answer 17

A symbiotic relationship where one organism benefits while the other organism is harmed.

Question 18

Photosynthesis

Answer 18

The process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Question 19

Population

Answer 19

A population is defined as a group of individuals of the same species living and interbreeding within a given area.

Question 20

Producer

Answer 20

A producer is a plant or algae that can produce food for itself using the energy from the sun or chemicals found in the ocean

Question 21

Realized niche

Answer 21

A realized niche can be defined as the environmental position that a species occupies and lives in

Question 22

Respiration

Answer 22

the process of breathing in oxygen and breathing out carbon dioxide

Question 23

Saprotroph

Answer 23

organism that feeds on nonliving organic matter

Question 24

Species

Answer 24

a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding

Question 25

Trophic level

Answer 25

the position of an organism in the food chain.

Question 26

What are the five trophic levels

Answer 26

First Trophic Level: Autotrophs.
Second Trophic Level: Primary Consumers. .
Third Trophic Level: Secondary Consumers.
Fourth Trophic Level: Tertiary Consumers.
Fifth Trophic Level: Quaternary Consumers.