Question

A succulent plant is grown in a low light situation so that it is very tall. pale, and has few leaves compared to its siblings grown in full sun. Is this an evolutionary change or not, and why?

Answer 1

Not evolution because of no genetic changes or phenotypic change

In a living organism, evolution is growing in the heritable traits of biological communities over succeeding generations. A mutation that is a permanent modification in the DNA chain that makes up a gene, so that the progression varies from what is discovered in maximum plants. On the other hand, phenotypic variation is due to underlying heritable genetic modification. This is a major requirement for development by natural preference which is not found in succulent plant.

Answer 2

This is not an evolutionary change. This is called etiolation which is a process by plants grown in the absence of sunlight. This can manifested by plants through weaker stems, fewer leaves, longer internodes and pale to yellowish color of plants. This is not an optimum condition for plants as they cannot adapt in the changes in the enviroment.