Chapter 4 -Flashcards

(17 cards)

1
Q

What is a resource?

A

A supply of something useful for survival

Resources can include food, water, shelter, and other essentials needed by organisms.

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2
Q

What does competition refer to in ecology?

A

A struggle between two or more organisms for the same resource

Competition can occur within a species (intraspecific) or between different species (interspecific).

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3
Q

What is symbiosis?

A

A close relationship in which two or more organisms from different species live together

Symbiosis can involve mutualism, commensalism, or parasitism.

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4
Q

Define host.

A

An organism that has a parasite living in or on it

Hosts provide resources and habitat for parasites.

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5
Q

What does the term ‘niche’ refer to?

A

The role of an organism in a habitat

A niche includes how an organism interacts with the biotic and abiotic factors in its environment.

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6
Q

Define ‘food web’.

A

A system of several overlapping food chains

Food webs illustrate the complex feeding relationships in an ecosystem.

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7
Q

What is the primary function of a food web?

A

To show the interconnected feeding relationships among organisms in an ecosystem

It highlights the diversity of diets and energy flow in ecological systems.

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8
Q

Fill in the blank: A _______ is a system of several overlapping food chains.

A

food web

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9
Q

True or False: A niche can be defined as the geographic location of a species.

A

False

A niche encompasses more than just location; it includes the role and interactions of the organism.

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10
Q

What is camouflage?

A

The coloring or patterns that allow a species to blend in with its habitat

Camouflage helps species avoid predation and enhances their survival in the wild.

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11
Q

What is mimicry?

A

The resemblance of one species to another

Mimicry can provide advantages such as protection from predators.

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12
Q

What is the movement of energy within a system called?

A

Energy flow

Energy flow is a crucial concept in understanding how energy is transferred and transformed within ecological systems.

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13
Q

Define natural cycle in the context of ecosystems.

A

A process in which nutrients and other resources are repeatedly transferred throughout an ecosystem

Natural cycles include processes such as the water cycle, carbon cycle, and nitrogen cycle.

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14
Q

What is pollution?

A

The introduction of poisons or garbage into an ecosystem

Pollution can have detrimental effects on wildlife and natural resources.

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15
Q

What is deforestation?

A

The removal of most or all trees from a forest

Deforestation can lead to habitat loss, climate change, and soil erosion.

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16
Q

What does ‘deforestation’ refer to?

A

The removal of most or all trees from a forest

17
Q

What is ‘conservation’?

A

The protection and restoration of species and natural resources in an ecosystem