simultaneous hermaphrodite A type of hermaphrodite which has both male and female organs at the same time and is able to produce both sperm and eggs at the same time. Such an organism is also able to fertilize its eggs with its own sperm (self-fertilization)...
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..
This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..
