Independance And Adaptation ~ B1.4 Flashcards
What do animals/plants compete for?
~Space/light
~Food
~Water
What is the difference between animals and plants when competing for light?
Plants
~Need room to spread leaves to obtain light for photosynthesis
Animals
~Need space to breed and compete for a mate
~Need territory to hunt in
What is the difference between animals and plants when competing for food?
Plants ~Absorb nutrients from the soil Animals ~Herbivores compete for vegetation ~Carnivores compete for their prey
What is the difference between animals and plants when competing for water?
Plants
~Absorbs water by their roots
Animals
~Needs water in order to survive
What is a population?
The total number of individuals of the same species that live in a certain area.
What are adaptations?
Special features or behaviour that make an organism particularly well suited to its environment.
Animals could be adapted through different methods, what are some examples of this?
~Changes to the surface area
~Thickness of insulating coat
~Amount of body fat
~Camiuflage
What are the adaptations of a polar bear?
~Nostrils that close under the water
~White fur for camouflage
~Webbed toes to aid swimming
~Wide laws to grip the ice
~Thick layer of fat under skin for warmth
The polar bear is adapted to the life in the Arctic.
What are the adaptations of camels?
~Humps stores fat for energy ~Long eyelashes to keep out sand ~Nostrils that close to keep out sand ~Thick lips to eat prickly desert plants ~Wide feet to prevent sinking into sand The camel is adapted to life in the desert
What are the adaptations of cacti?
~Thick stem sores water
~Extensive root system to take in water
~Needles instead of leaves reduce surface area for water loss
What are environmental changes?
Changes that could affect animals and plants which may be caused by living or non living factors.
What are examples of non living changes?
~Changes to average temperature
~Amount of rainfall
Non living changes can effect the distribution of living organisms, give examples?
~crops that previously grew well in a dry area may not thrive in a wetter environment
~the numbers of pollinating insects may decrease in cooler weather, which may turn affect the distribution of future crops
What are some examples of living changes?
~new predators
~new diseases
~migration
What organisms can be used as indicators for pollution?
Lichens ~ organisms that are affected by suffer dioxide pollution in the air
Invertebrate Animals ~ when rivers or lakes become polluted, the level of dissolved oxygen in the water falls
