How flowers reproduce – Plant Biology
Black-eyed Susan (the black in the middle is the seeds) - How flowers reproduce When did flowers evolve? The earliest flowers probably developed about 130 million years ago, in the [...]
30
05, 2017
29
05, 2017
What is moss? Plant Biology and Evolution
A moss-covered rock During the Cambrian period, about 540 million years ago, some early plants evolved from earlier algae that could live on land, outside of the water. These plants [...]
29
05, 2017
Ginkgo trees – Plant evolution and biology
Ginkgo trees The first trees Ginkgo trees were the first kind of tree. These first trees on earth appeared during the Permian period, about 270 million years ago. This was during [...]
29
05, 2017
What are ferns? Plant biology and evolution
What are ferns? Ferns growing in a forest When did ferns evolve? The first ferns - the first plants that had leaves - evolved from plants that were more like [...]
29
05, 2017
What are cycads? Evolution and Biology
Cycad trees. They look like palm trees but they are very different! At the end of the Carboniferous period, about 300 million years ago, the only kinds of plants on [...]
29
05, 2017
Evolution of Cells – Biology
A mutated snake with two heads With all these new molecules like lipids, amino acids, RNA, and protein floating around in the oceans by around four billion years ago, there [...]
29
05, 2017
Natural Selection – Evolution and Biology
The feet of a person with six toes on each foot Whenever protons and electrons bump into each other, or atoms bump into each other, or molecules bump into each other, [...]
29
05, 2017
Mushrooms, biology and evolution
Mushrooms growing in a field About 600 million years ago, a few eukaryote cells developed into multi-celled creatures. Some of them became animals, and some became plants, and others became [...]
29
05, 2017
What is a vacuole? Parts of a cell – Biology
Vacuoles in an amoeba (a one-celled eukaryote) Vacuoles are little pockets in the cytoplasm of a cell where a cell stores food. You can see them with a good light [...]
29
05, 2017
How do cells move around? The flagellum
Bacterium with a flagellum (under a microscope) Cells drift in the current... The simplest cells, developing about four billion years ago, had no way to control their own movement. They [...]
