Ecology Flashcards

To get an A (51 cards)

1
Q

What is Ecology

A

The study of how living and non-living things interact.

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2
Q

What does biotic mean?

A

All the living factors that can affect an organism eg, competitors, predators

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3
Q

what does abiotic mean?

A
  • all the non-living/physical factors that affect an organism,
  • eg, amount of water, sunlight, oxygen, salinity S.W.O.T.S
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4
Q

What is MRSGREN?

A

Movement
Respiration
Sensitivity
Growth
Reproduction
Excretion
Nutrition

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5
Q

List 3 biotic examples

A
  • Plants
  • Animals
  • Bacteria
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6
Q

List 3 abiotic examples

A
  • Temperature
  • Water
  • Soil
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7
Q

What is respiration

A

The process that the body uses to release energy from digested food

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8
Q

What do autotrophs do?

A

Convert light energy into chemical energy

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9
Q

what do heterotrophs do?

A

Consume energy from other living things

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10
Q

what do herbivores do?

A

Eat autotrophs only

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11
Q

What do carnivores do?

A

Eat heterotrophs only

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12
Q

What do omnivores do?

A

eat autotrophs and heterotrophs

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13
Q

What do detrivores do?

A

eat dead/decomposing organisms or wastes

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14
Q

What do decomposers do?

A

Decomposers break down dead materials, returning nutrients to the soil.

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15
Q

what is biodiversity?

A

The range variety of organisms living in an ecosystem

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16
Q

What is an ecosystem

A

The interactions between living and non-living things in an area.

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17
Q

what is an example of an ecosystem

A

reef ecosystem, pond ecosystem

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18
Q

what is a habitat?

A

The place where an organism lives

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19
Q

what is an environment

A

The factors, both living and non-living, around an organism.

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20
Q

what are some examples of enviroments

A

wind, air, vegetation, wildlife etc.

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21
Q

what is a terrarium

A

A container that acts as an organism’s habitat, providing both living and non-living needs.

22
Q

what is predation

A

where one organism eats or preys on another

23
Q

what is parasitism

A

a type of predation where one organism benefits while the other doesn’t.

24
Q

what is competition?

A

where both organisms fight for the same resource

25
what is mutualism?
where both organisms benefit (partners, mutual friends)
26
what is commensalism?
where one organism benefits without affecting the other
27
what is amenalism?
One organism harmed while the other is not affected
28
what is neutralism?
Neither affected by the other
29
what is are some examples of predation?
Lion and Zebra: Lions hunt and kill zebras for food. Eagle and Fish: Eagles catch and eat fish from lakes and rivers. Wolf and Deer: Wolves hunt and prey on deer.
30
what is are some examples of parasitism?
Tapeworm and Human: Tapeworms live in the intestines of humans, absorbing nutrients from their host. Flea and Dog: Fleas feed on the blood of dogs, causing irritation and sometimes transmitting diseases. Mistletoe and Trees: Mistletoe plants attach to trees and extract water and nutrients from them.
31
what is are some examples of competition?
Lions and Hyenas: Both species compete for the same prey, such as wildebeest, in African savannas. Trees in a Forest: Different tree species compete for sunlight, water, and nutrients in a densely packed forest. Barnacles on a Rock: Barnacles compete for space on rocks in intertidal zones.
32
what is are some examples of mutualism?
Bees and Flowers: Bees get nectar from flowers for food, while flowers get pollinated. Clownfish and Sea Anemones: Clownfish receive protection from predators by living among the stinging tentacles of sea anemones, which in turn get cleaned by the fish. Humans and Gut Bacteria: Beneficial bacteria in the human gut help with digestion and synthesize vitamins, while getting a habitat and nutrients.
33
what is are some examples of commenalism?
Barnacles and Whales: Barnacles attach to the skin of whales, gaining a place to live and access to plankton as the whale moves, while the whale is unaffected. Cattle Egrets and Cattle: Cattle egrets eat insects stirred up by grazing cattle, without affecting the cattle. Epiphytic Plants and Trees: Epiphytic plants, like orchids, grow on trees to access sunlight, without harming the tree.
34
what is are some examples of amenalism?
Walnut Tree and Plants Below: Walnut trees release chemicals (juglone) that inhibit the growth of other plants beneath them. Penicillium Mold and Bacteria: Penicillium mold produces penicillin, which kills bacteria around it. Large Tree and Smaller Plants: A large tree might shade smaller plants, limiting their access to sunlight and stunting their growth.
35
what is are some examples of neutralism?
Tigers and Deer: In a dense forest, tigers and certain deer species may not affect each other's populations directly. Frogs and Birds in a Rainforest: Frogs and birds that live in the same area without directly interacting or affecting each other. Sharks and Sea Cucumbers: In the ocean, sharks and sea cucumbers might coexist without directly impacting each other.
36
What is the first trophic level in a food chain?
Producers, such as plants.
37
In the food chain 'Grass → Grasshopper → Frog → Snake', who is the second order consumer?
Frog.
38
True or False: Primary consumers are always herbivores.
True.
39
Fill in the blank: In the food chain 'Sun → Grass → Rabbit → Fox', the rabbit is a __________ consumer.
first order.
40
What role do decomposers play in food chains?
They break down dead organic matter and recycle nutrients back into the ecosystem.
41
what are first order consumers?
First Order Consumers: These are herbivores that eat plants. Think of rabbits munching on grass.
42
what are second order consumers?
Second Order Consumers: These are carnivores or omnivores that eat first-order consumers. For example, a snake eating a rabbit.
43
what are third order consumers?
Third Order Consumers: These are larger carnivores or omnivores that eat second-order consumers. Like a hawk eating a snake.
44
what are apex predators?
Apex Predators: These are the top predators in the food chain with no natural predators. Think of lions or great white sharks.
45
what is niche?
the ecological niche involves both the place where an organism lives, and the roles that an organism plays
46
what is a keystone species?
is a species that may be in low population size but has a profound effect on species in lower trophic levels
47
What is population?
Population is a group of organisms of the same species that live together in a certain area.
48
what is a community?
different groups of organisms that live together in a particular environment
49
What happens as we move up the food chain/web?
- the number of organisms at each level increases - the amount biomass (g/m) at each level decreases - the amount of energy (J) at each level decreases
50
What is biomass?
chemical stored energy
51
what does the biomass pyramid do?
measures the amount of food available at each trophic level.