2nd Year - Variety Of Life And Classification Flashcards Preview

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Flashcards in 2nd Year - Variety Of Life And Classification Deck (14):

Adaptation of a polar bear?

Polar bears are well adapted for survival in the Arctic. They have:
- a white appearance, as camouflage from prey on the snow and ice
- thick layers of fat and fur, for insulation against the cold
- a small surface area to volume ratio, to minimise heat loss
- a greasy coat, which sheds water after swimming.


Adaptation of the Pompeii worm?

The Pompeii worm is adapted to the high temperatures and pressures of the hydrothermal vents by:
- using a thick layer of bacteria to protect it from heat
- hiding inside a papery tube to protect it from predators.


What are the groups in classification?

- kingdom - animal
- phylum - vertebrate
- class - mammal
- order - carnivorous
- family - cat
- genus - big cat
- species - lion.


What 6 groups (kingdoms) can living things be classified into?

- plants
- animals
- fungi
- protoctists
- bacteria
- viruses (not strictly living things)


Main features of animals?

Multicellular, no cell wall or chlorophyll, heterotrophic feeders.


Features of plants?

Multicellular, have cell walls and chlorophyll, autotrophic feeders


Main features of fungi?

Multicellular, have cell walls, do not have chlorophyll, saprophytic feeders.


Features of protoctists?

Usually unicellular, with a nucleus eg amoeba.


Examples of plants?

all green plants, including: algae, ferns and mosses (plants that do not produce seeds), conifers and flowering plants (plants that do produce seeds)


Examples of animals?

all multicellular animals, including: jellyfish, worms, arthropods, molluscs, echinoderms, fish, amphibia, reptiles, birds and mammals


Examples of fungi?

moulds, mushrooms, yeast


Examples of protoctists?

amoeba and paramecium


Main features of bacteria?

Unicellular, with no nucleus


Examples of bacteria?

Lactobacillus, Staphylococcus