interactions Flashcards
what is a population
many of the same type of animal living in the same place
what is a community
different populations of organism living together and interacting together
what is an organism
its alive
how can population sizes increase & decrease
increase
- organisms reproduce
- organisms move into surroundings
decrease
- organisms die
- organisms move away from surroundings
- birth rate drops
- got smth like covid
waht is a habitat
place where organisms live
-cuz got everything they need–> water, air, food, shelter & space
e.g. of habitat
pond, forest, rotting log, pile of leaves, garden, seashore, drain.
y some organisms cannot live in another habitat
living conditions diff–> adapted?
e.g. of artificial habitats
zoo enclosure, aquarium, terrariums, HERBarium
y r populations in habitat interdependent
how animal pop depend on plant pop
- shelter & protection
- places to lay egg/hide young
- food
- O2 frm photosynthesis
how plant pop depend on animal pop
- pollinate flowers
- disperse seeds & fruits
- animal waste as fertilisers
pop of organisms that live in a pond community(PLANTS ONLY)
(organisms that live in water & on land near pond)
- list at least 4
- duckweed
- water hyacinth
- water lettuce
- water lily
- cat tail
- arrowhead
- water lotus
- elodea
- hydrilla
- cabomba
pop of organisms that live in a pond community(ANIMAL ONLY)
(organisms that live in water & on land near pond)
- list at least 4
- bird
- dragonfly
- damselfly
- froggie
- pond skater
- water boatman
- water cricket
- fish
- tadpole
- dragonfly nymph
- damselfly larva
- water spider
pop of organisms that live in a pond community(fungi & microorganisms)
- list at least 1 for each
fungi
- bracket fungi
- toadstool
microorganisms
- algae
- amoeba
features of a leaf litter community
very dark warm, damp, with little air movement –> very good for fungi and bacteria and animals
organisms in a leaf litter community
- earthworm
- ant
- snail
- millipede
- grasshopper
- beetle
- centipede
- spider
- lizard
- fungi
- bacteria
what is the interaction of the earthworm, ant, snail, millipede and grasshopper in the leaf litter community
- it feeds on leaf litter, breaking it down into smaller pieces so it is easier for fungi and bacteria to grow on.
- eaten by other animal populations.
what is the interaction of the spider and lizard in the leaf litter community
feed on other animal populations such as earthworms, ants and grasshoppers.
what is the interaction of fungi and bacteria in the litter leaf community
- feeds on litter leaf by digesting it as they grow on it
- make the leaf litter softer and easier for some animal populations to eat
what is the interaction of the beetle in the litter leaf community
- feeds on leaf litter or on microorganisms and small insects
- eaten by lizard and spider population
what is the interaction of the centipede in the leaf litter community
feeds on the millipede population
true/false
leaf litter community can be part of the field community.
true
list examples of plant pop in field community (list at least 3)
- cupid’s shaving brush
- vernonia
- lalang
- mimosa
- love grass
- kyllinga
list examples of animal pop that lives in soil in field community (list at least 2)
- termite
- earthworm
- woodlouse
- ant
- beetle
list examples of animal pop that lives among plants in field community (list at least 3)
- grasshopper
- snail
- butterfly
- spider
- bee
- lizard
- grass snake
list examples of plant pop in a garden community (list at least 3)
- trees
- spider lily
- cow grass
- rain tree
- pong pong tree
- bird’s nest fern
- dandelion
