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Final Year Lfsc10🌸 > Biodiversity And Classification > Flashcards

Biodiversity And Classification Flashcards

1
Q

Biodiversity

A

Various forms of life on earth

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2
Q

Biodiversity includes

A

Species diversity
Genetic diversity
Ecosystem diversity

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3
Q

Species diversity

A

Variety of species

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4
Q

Genetic diversity

A

Genetic variety within a species

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5
Q

Ecosystem diversity

A

The variety of ecosystems that occur in a specific area

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6
Q

Indian ocean on the east coast is warmed by the

A

Mozambique and agulhas current from the tropics

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7
Q

Atlantic Ocean on the west coast is cooled by the

A

Benguela current from the Antarctica

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8
Q

Indigenous species

A

Species that occur naturally in a particular country or region

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9
Q

Exotic /alien plants

A

Species that don’t occur naturally in a region but have been brought from another region

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10
Q

Endemic species

A

Species that will only exist in one area and no where else

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11
Q

Taxa

A

The groups in which organisms are classified into

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12
Q

Taxonomy

A

Scientific classification of organisms

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13
Q

7 categories under each kingdom

A

Kingdom
Phylum/division
Class
Order
Family
Genus
Species

They are based on physical properties like the two kingdom system divided into plantae and animalia

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14
Q

5 kingdom system

A

Monera(bacteria)
Protista
Fungi
Plantae
Animalia

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15
Q

What is used to classify organisms in the 5 kingdom system

A

Body structure - unicellular /multicellular/colonies
Cell structure-presence or absence of nucleus or organelles

Composition of cell wall-cellulose/chitin/no cell wall

Motility - mobile or immobile
Mode of nutrition - auto trophic or heterotrophic
Method of reproduction - binary fission/asexual/sexual

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16
Q

Binary fission

A

binary fission is a type of asexual reproduction where a parent cell divides, resulting in two identical cells, each having the potential to grow to the size of the original cell

17
Q

Difference between prokaryotic and eukaryotic

A

Organisms without a true cell or organelles in the cytoplasm
Their DNA is not free in the cytoplasm
Monera is prokaryotic

Eukaryotic
Organisms with a true nuclei
DNA is enclosed by a nuclear membrane and occurs inside the nucleus therefore
True organelles in the cytoplasm
All Protista, fungi, plantae and animalia

18
Q

Kingdom monera

A

Bacteria are unicellular ; no true nuclei and the bacterium cell is surrounded by a cell wall
Some are auto trophic by photosynthesis however majority is heterotrophic.

Heterotrophic bacteria :parasitic
Mutualistic and saprophytic

19
Q

Parasitic

A

Dependent on living organic matter for food where organisms live together and one benefits while the other is harmed.

20
Q

Saprophytic

A

Dependent on dead organic matter for food

21
Q

Mutualistic

A

Living together with other organisms so that both benefit from the relationship

22
Q

Reproduction for monera

A

Asexually or binary fission

23
Q

Kingdom Protista

A

Protozoa animal like unicellular, heterotrophic organisms
Algae-plant like auto trophic organisms
Slime moulds and water moulds - fungus like organisms

Some protist are microscopic while others like algae are macroscopic
Eukaryotic and it moves by cilia and flagella

Reproduction is asexually - binary fission

Live in most environment as they are aquatic.

24
Q

Kingdom fungi

A

Yeast-unicellular
Mushroom-multicellular
Moulds-multicellular

Have a true nuclei and eukaryotic
Cell walls consist of cellulose and chitin
Fungal body has branched filaments/hypae

Heterotrophic - no chlorophyll
Saprophytic and live on dead organic matter
Some are parasites or Mutualistic

Reproduction is by binary fission for unicellular fungi
And multicellular fungi - asexually by means os spored during favorable conditions and sexually by gametes during unfavorable conditions

25
Q

Kingdom plantae

A

Divided into= byrophytes are mosses, angiosperms like flowering planted
Multicellular with a true nuclei and eukaryotic
Auto trophic and reproduction sexually and asexually

26
Q

Kingdom Animalia

A

Multicellular and complex
True nuclei =eukaryotic
No cell walls
Heterotrophic
Reproduction by asexual and sexual

Final Year Lfsc10🌸 (10 decks)

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