nodal point One of two point’s in a compound optical system so related that a ray directed toward the first point will appear to have passed through the second point parallel to its original direction. Synonym: axial point...
Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..
Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the ..
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..
Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..
