1. (Science: plant biology) in gymnosperms and club mosses, a group of sporophylls arranged compactly on a central... Read More
Elastic cone -->
Thicker lower portion of the elastic membrane of the larynx, extending between the cricoid... Read More
The tapering lower extremity of the spinal cord.
Synonym: conus... Read More
There are two main subdivisions of seed plants—the ones without covered seeds, the gymnosperms, and the ones with covered... Read More
noun, plural: gymnosperms
A vascular plant in which the seeds are not enclosed by a ripened ovary... Read More
What are Pollen Grains?
Plants are unique structures and so they carry out mechanisms in special ways. Fertilization in... Read More
'''Young-helmholtz theory of color vision
A theory that there are three perceiving elements in the retina: red, green, and... Read More
What is a phospholipid? Phospholipids are a subgroup of lipids. Other major types of lipids are fatty acids, sphingolipids,... Read More
Origin: NL, fr. Gr.; so called because its axis is parallel to the side of the cone. See Parable, and cf.... Read More
Why are most plants green? Have you ever had the same question? Perhaps, you’ve been told that the plants are green... Read More
plural: cyclic guanosine monophosphates
(biochemistry) A cyclic form of guanosine monophosphate (chemical... Read More
noun, plural: sense organs
An organ or structure that has nerve endings capable of detecting and reacting to a... Read More
noun, plural: terrestrial plants
Any animal that lives, grows and reproduce in aquatic... Read More
noun, plural: meiospores
The spore produced by meiosis, such as the precursor cells of gametophytes of... Read More
External Form of a Woody Twig
A woody twig, or stem, is an axis with leaves attached. The leaves are arranged in various... Read More
A "cone" (such as the ones of pine trees). It is the fruiting body of gymnosperms. It can be male or... Read More
(Science: apparatus) a piece of chemistry laboratory equipment, a container often made of glass, which has... Read More
Review of Mitosis: Cell Cycle
The cell cycle contains the process in which cells are either dividing or in between... Read More
THE is the most complicated and highly organized of the various systems which make up the human body. It is the... Read More
(anatomy) A thin, white sheet of whiter matter fibers in the brain between the putamen and... Read More
Axon Hillock Definition
What is axon hillock? If you are familiar with the different parts of the neuron, the axon hillock... Read More
1. Having the constituent parts so compact, or so firmly adhering, as to resist the impression or penetration of... Read More
(Science: chemistry molecular biology) a spiral structure in a macromolecule that contains a repeating pattern.
A... Read More
1. Having the form of a funnel or cone; funnel-shaped.
2. (Science: botany) same as funnelform.
Origin: L.... Read More
A taxonomic family of Carnivora embracing domestic and wild cats such as lions and tigers
Felidae... Read More
noun, plural: dopamines
3,4-dihydroxyphenethylamine (chemical formula: C8H11NO2); a neurotransmitter or a hormone... Read More
1. (Science: botany) The fruit of the oak, being an oval nut growing in a woody cup or cupule.
2. A cone-shaped piece... Read More
Definition of Vascular plants
The term 'vascular' is derived from the Latin word vāsculum, vās, meaning "a container and... Read More
1. A small bottle-shaped vessel for holding fluids; as, a flask of oil or wine.
2. A narrow-necked vessel of metal or... Read More
noun, plural: fibres
(1) (anatomy) Any elongated, thread-like structure, e.g. nerve fiber and muscle fiber
(2)... Read More
1. The act of revolving, or turning round on an axis or a center; the motion of a body round a fixed point or... Read More
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and... Read More