Food Chain
Every living thing needs energy in order to live. Everytime animals do something (run, jump) they use energy to do so.
Animals get energy from the food they eat, and all living things get energy from food. Plants use sunlight, water and nutrients to get energy (in a process called photosynthesis). Energy is necessary for living beings to grow.
Animals get energy from the food they eat, and all living things get energy from food. Plants use sunlight, water and nutrients to get energy (in a process called photosynthesis). Energy is necessary for living beings to grow.
A
food chain shows how each living thing gets food, and how nutrients and
energy are passed from creature to creature. Food chains begin with
plant-life, and end with animal-life. Some animals eat plants, some
animals eat other animals.
As
a conclusion, all living things need food to give them the energy to
grow and move. A food chain shows how each living thing gets its food. It shows who is eating who.
Food web
A
food web is a diagram showing the various different plants and animals
in an ecosystem in relation to each other. It encompasses many consumers
of each different level, acknowledging that one predator may eat
several different kinds of prey, and that one kind of prey may be eaten
by several kinds of predators. There are many food chains within a food
web, and one creature is not necessarily at the top of the hierarchy.
The difference between a food chain and a food web is that a chain is a single strand of different levels of energy transfers, where as a food web will show the many food chains in a particular ecosystem such as a forest.
The difference between a food chain and a food web is that a chain is a single strand of different levels of energy transfers, where as a food web will show the many food chains in a particular ecosystem such as a forest.
Difference Between Food Chain and Food Web
A food chain only follows just one path as
animals find food.
eg: A hawk eats a snake, which has eaten a frog, which has eaten a grasshopper.
A food web shows the many different paths plants
and animals are connected.
eg: A hawk might also eat a mouse, a
rabbit, a snake or some other animal. The snake may eat a rabbit, a mouse, or
some other animal. And so on for all the other animals in the food chain.
Trophic dynamics
Trophic dynamics is a system which describes be position of a living being in a food chain. The system uses trophic levels to explain what an organism eats is eaten by.
Since consumers eat a variety of foods,food chains interact. A set interacting food chains is represented by a food web which there is an exampleh of above. |
A Trophic Pyramid is a graphic reprensentation of one particular characteristic of each trophic
There
are different types of CONSUMERS.
It is based on what they EAT |
HERBIVORES eat only plants or plant
products. That makes them PRIMARY CONSUMERS.
CARNIVORES only eat meat! They eat
other animals. That makes them SECONDARY OR TERTIARY CONSUMERS.
OMNIVORES eat both plants and meat. So
when a squirrel eats acorns or fruits, it is a PRIMARY CONSUMER; but, when it
eats insects or baby birds, it is a SECONDARY CONSUMER.
DECOMPOSERS are the cleanup crew of life.
They're just carnivores and herbivores that like their food already dead. Like
maggots, bacteria, fungus, earthworms and other scavengers.
MEANING OF WORDS
Herbivore - an animal that eats plants.
Carnivore - an animal that eats other animals.
Herbivore - an animal that eats plants.
Carnivore - an animal that eats other animals.
Omnivore - an animal that eats both plants and animals for example ducks and humans.
Producer - usually a green plant that produces its own food by photosynthesis.
Primary Consumer - Animals that consume only plant matter. They are herbivores - eg rabbits, caterpillars, cows, sheep, and deer.
Secondary Consumer - Animals that eat primary consumers (herbivores).
Tertiary Consumer - Animals that eat secondary consumers (carnivores that feed on other carnivores).
Predators - kill for food. They are either secondary or tertiary consumers for example polar bears, golden eagles
Prey - are the organisms that predators feed on. Examples of predator and prey species are: fox and rabbit; blue tit and caterpillar; wolf and lamb.
Decomposer - an organism such as bacteria and fungi that breaks down dead organisms and their wastes. (They do not 'eat' the food like scavengers, as they have no mouth-parts. Instead they break down solid matter into liquids which they can absorb.) Examples: bacteria and some fungi.
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