Ecology Flashcards

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1
Q

What is an Ecosystem?

A

All the living and non living factors together in one place.

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2
Q

What is an enviroment?

A

All of the factors in a habitat which effects an organisum. These may be biotic or abiotic.

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3
Q

What is a population?

A

A number of the same species living together

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4
Q

What is a community?

A

All of the organisums that live in a given habitat together

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5
Q

What is a Habitat?

A

The geographical area obtained by that ecosystem

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6
Q

What is a Niche?

A

The role of a given species within there eco system. Its location, function, relationships and interactions with other organisums.

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7
Q

What is Competative Exclusion Principle?

A

Where two similar species do not generally within the same community as each other - forcing one to adapt or be expelled

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8
Q

What is a species?

A

A group of similar organisums which mate and produce viable and fertile offspring.

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9
Q

What is a food chain?

A

A sequence of organisums in an eco system where each is the food source for the next in the sequence.

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10
Q

What is a food web?

A

All the interconnect food chains in an eco system.

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11
Q

What are trophic levels?

A

A feeding level in a food web/chain.

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12
Q

What are producers?

A

The foundation level of the food chain/web. Normally always plants.

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13
Q

What is a Pyramid of numbers?

A

A pyramid showing the number of animals for each trophic level

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14
Q

What is the pyramid of Biomass?

A

A pyramind showing the weight/mass of each trophic level.

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15
Q

What is the Pyramid of Energy?

A

A pyramid showing the energy used at each trophic level within an eco system.

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16
Q

How much energy gets carried over from one trophfic level to the next?

A

10%

17
Q

What microhabitats make up a habitat?

A
Forest canopy
Shrub layer
Herb layer
Litter
Soil
18
Q

What is Abiotic and biotic mean?

A

Abiotic is non - living

Biotic is living

19
Q

What are consumers?

A

These species that fall into primary, secondary and tertiary levels. Herbivores, Carnivors and Omnivores

20
Q

Given 2 reasons why energy can be lost between trophic levels?

A

Repoduction, death and excreation.