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PROVIDE EXAMPLES FOR EACH~~~~~~
thnx a lot if you help
ill give ten point for best answer

2006-11-28 11:57:36 · 4 answers · asked by Anonymous in Science & Mathematics Biology

4 answers

Chemical - skunk - sprays them in the face
Behavioral - opossum - looks dead
Biological - birds - has the ability to fly away

2006-11-28 12:06:44 · answer #1 · answered by chemicalimbalance000 4 · 0 0

It's not hard to think of defenses against predation - just think of all the various things in the world and why you might not want to eat them.

Physical means are probably referring to... well... physical stuff. Roses are covered with thorns, for example. What herbivore wants to deal with that? There are also plenty of animals that defend themselves with claws and teeth - and you gotta HAVE the claws and teeth for that to work.

There are lots of chemical defenses that creatures have. The word we would usually use for that is a poison. Spicy foods, for example, are all spicy to discourage herbivores (don't ask me why those wacky humans LIKE them!). Many insects and animals are also filled with nasty tasting and smelling chemicals. A skunk's odoriferous musk might also be considered a chemical defense.

The biggest behavioural defense I can think of is simply running away. Of course, some animals have very sophisticated patterns of behaviour that help them avoid predators, so perhaps it's a little dismissive to lump it all together like that. Lemurs react to shadows on the ground and screech to warn others nearby. Most herd instincts also base around a kind of protection gained by large numbers.

I'm not quite sure exactly what you might mean by a 'biological' defense, since all of these defenses are arguably biological. Perhaps you mean evolutionary defenses, such as zebra stripes which make it difficult to tell where one zebra ends and another begins, or developed relationships like that of a clownfish and an anenome.

Hope that helps!

2006-11-28 12:06:59 · answer #2 · answered by Doctor Why 7 · 0 0

physically preys can defend themselves by attacking or escaping from their predator- ex. a field mouse escaping from a snake, or a cobra snake attacking a hawk when trying to be eaten.

Chemical defense is for example an octopus when being attacked realeases a purple chemical substance that allow for it to escape from its predator.
other examples: Stink bugs also release chemicals to disturb their predators, and skunks.

Biological defenses include those where animals can adapt or camouflage with their environment, this way making them invisible to their predators. ex - iguanas, chameleons, certain fish.

hope this helps!

God Bless

2006-11-28 12:10:35 · answer #3 · answered by Deneb 1 · 0 0

Physical - animals such as zebras, deer, rabbits, are adapted to have strong powerful legs so that they can run away from their predators fast.

Chemical - skunks spray a stinky smelling gas at enemies to scare them off.

Behavioral - horned animals like rhinos and bulls lower their horns and prepare to charge at their predators.

Biological - some animals like chameleons are able to change their body colour to camouflage with their surrounding environment.


(hope this was useful)

2006-11-28 12:03:28 · answer #4 · answered by tan 3 · 0 0

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