21 JUN 2013 by ideonexus
How Plants and Animals Survive in Their Environment
Plants and animals are separated by about 1.5 billion years of evolutionary history. They have evolved their multicellular organization independently but using the same initial tool kit the set of genes inherited from their common unicellular eucaryotic ancestor. Most of the contrasts in their developmental strategies spring from two basic peculiarities of plants. First, they get their energy from sunlight, not by ingesting other organisms. This dictates a body plan different from that of ani...Animals spend energy to maintain an internally consistent state, while plants change their state in response to the environment.
23 MAR 2012 by ideonexus
The Entangled Bank
It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, and dependent on each other in so complex a manner, have all been produced by laws acting around us. These laws, taken in the largest sense, being Growth with Reproduction; Inheritance which is almos...The closing chapter of Darwin's "Origin" inspiring and beautiful view of evolution and life.