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Biology > Topic 5 - Ecoogy And Evolution (SL) > Flashcards

Topic 5 - Ecoogy And Evolution (SL) Flashcards

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AP® Biology flashcards Biology 101 flashcards
0
Q

Classification from species to kingdom

A 
Kingdom
Phylum
Class
Order
Family
Genus
Species
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1
Q

What is a species?

A

A group of organisms with similar characteristics which can interbreed and produce fertile offspring

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2
Q

Plant classification (phyla)

A

Bryophytes (mosses)
Filicinophytes (ferns)
Coniferophytes (conifers)
Angiospermophytes (flowering plants)

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3
Q

Animal classification

A 
Porifera
Platyhelminths
Mollusca
Cnidaria
Annelida
Arthropoda
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4
Q

Describe porifera

A 
No clear symmetry
Attached to a surface
Pores through body
No mouth or anus
Examples: sponges
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5
Q

Describe platyhelminths

A 
Bilaterally symmetric
Flat bodies
Unsegmented
Mouth but no anus
Examples: planaria, tapeworms, liverflukes
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6
Q

Describe mollusca

A 
Muscular foot and mantle
Shell usually present
Segmentation not visible
Mouth and anus
Examples: slugs, snails, clams, squids
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7
Q

Describe cnidaria

A 
Radically symmetric
Tentacles
Stinging cells
Mouth but no anus
Examples: jellyfish, corals, sea anemones
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8
Q

Describe annelida

A 
Bilaterally symmetrical
Bristles often present
Segmented
Mouth and anus
Examples: earthworms, leeches, ragworms
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9
Q

Define arthropoda

A 
Bilaterally symmetric
Exoskeleton
Segmented
Jointed appendages
Examples: insects, spiders, crabs, millipedes
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10
Q

Define natality

A

Offspring are produced and are added to the population

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11
Q

Define mortality

A

Individuals die and are lost from the population

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12
Q

Define immigration

A

Individuals move into the area from elsewhere and add to the population

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13
Q

Define emigration

A

Individuals move out of the area to live elsewhere

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14
Q

What is evolution?

A

The cumulative change in the heritable characteristics of a population

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15
Q

What is a community?

A

A group of populations living together and interacting with each other in an area

16
Q

What is a food chain?

A

A sequence of trophic relationships, where each member in the sequence feeds on the previous one

17
Q

What is an autotroph?

A

Organisms that synthesise their own organic molecules (food) from simple inorganic substances

18
Q

What are heterotrophs?

A

Organisms that obtain organic molecules (food) from other organisms

19
Q

Types of heterotrophs

A

Consumers
Detritivores
Saprotrophs

20
Q

What are consumers?

A

Organisms that ingest organic matter that is living or recently killed
Example: sheep

21
Q

What are detritivores?

A

Organisms that ingest dead organic matter

Example: earthworms

22
Q

What are saprotrophs?

A

Live on or in dead organic matter, secreting enzymes into it, and absorbing the products of digestion

Biology (5 decks)

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