Examples of coevolution of plants and insects?

Question

can u plz help me if u could give me 10 example it would be great. thank you with the name of the plant and the insect

Answer 1

All good answers so far, except I fail to see how this is a coevolved interaction:

1. Monarch butterflies only lay eggs on the milkweed plant. The larvae feed on the milkweed and become poisonous.

From what's presented, the monarch butterfly has adapted to the milkweed, but I see no evidence for reciprocal evolution in the milkweed to the presence of the butterfly -- after all, herbivory has negative fitness consequences, so the milkweed does not benefit from this interaction.

Answer 2

Name any pairs that have any symbiotic relationship.

1.  Monarch butterflies only lay eggs on the milkweed plant.  The larvae feed on the milkweed and become poisonous.

2.  Bees and any plants they pollinate.  Bees get the food and the plants are pollinated.

3.  Rattan cane and ants.

4.  Acacia trees and ants.

Answer 3

I think very neat example is swollen thorn acacias and ants:

http://waynesword.palomar.edu/acacia.htm

Ants have become dependent on the plant and vice versa.

Pollinators often have affected the evolution of plants and again, vice versa: All the pretty colours you see from meadow are there to attract pollinators. Moreover plants may have special UV-reflecting parts,  nectarguides:

http://www.cals.ncsu.edu/course/ent591k/...

How the pollination can shape both flower and insect, is beautifully demonstrated in Darwins Hawk moth

http://encarta.msn.com/media_461530192_7...

http://www.naturalhistorymag.com/master....

Plant toxins are also result of coevolution: plantpredators, for example butterfly larvae, eat plants, which develope repellants to avoid being eaten. Those larvae which tolerate the toxins best, reproduce more, next generation is more resistant - plants, which are more toxic, survive better. And this continues and you get toxic plants and very specialized insects.

And this is just the tip of an iceberg. Dig out more - insects are AMAZING!

Answer 4

probably the classic example is the complex of passion flower vines and their associated Heliconius butterflies.  Here's a nice survey paper on this - it may be a bit advanced for you at this point, but it might help to give you an idea of some of the wild variation that can result from these sorts of arms races:

http://www.colostate.edu/Depts/Entomolog...