32 results found

Search Results for: cone

Cone

Cone 1. (Science: plant biology) in gymnosperms and club mosses, a group of sporophylls arranged compactly on a central... Read More

Elastic cone

Elastic cone --> conus elasticus Thicker lower portion of the elastic membrane of the larynx, extending between the cricoid... Read More

Medullary cone

medullary cone The tapering lower extremity of the spinal cord. Synonym: conus... Read More

Seed Plants

There are two main subdivisions of seed plants—the ones without covered seeds, the gymnosperms, and the ones with covered... Read More

Gymnosperm

Definition noun, plural: gymnosperms A vascular plant in which the seeds are not enclosed by a ripened ovary... Read More

Pollen Grain

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 colour vision

'''Young-helmholtz theory of color vision A theory that there are three perceiving elements in the retina: red, green, and... Read More

Phospholipid

What is a phospholipid? Phospholipids are a subgroup of lipids. Other major types of lipids are fatty acids, sphingolipids,... Read More

Parabola

parabola Origin: NL, fr. Gr.; so called because its axis is parallel to the side of the cone. See Parable, and cf.... Read More

Chlorophyll

Why are most plants green? Have you ever had the same question? Perhaps, you’ve been told that the plants are green... Read More

Cyclic guanosine monophosphate

Definition noun plural: cyclic guanosine monophosphates (biochemistry) A cyclic form of guanosine monophosphate (chemical... Read More

Sense organ

Definition noun, plural: sense organs An organ or structure that has nerve endings capable of detecting and reacting to a... Read More

Terrestrial plant

Definition noun, plural: terrestrial plants Any animal that lives, grows and reproduce in aquatic... Read More

Meiospore

Definition noun, plural: meiospores The spore produced by meiosis, such as the precursor cells of gametophytes of... Read More

Stems

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

Strobilus

strobilus A "cone" (such as the ones of pine trees). It is the fruiting body of gymnosperms. It can be male or... Read More

Erlenmeyer flask

Erlenmeyer flask (Science: apparatus) a piece of chemistry laboratory equipment, a container often made of glass, which has... Read More

Meiosis and Alternation of Generations

Review of Mitosis: Cell Cycle The cell cycle contains the process in which cells are either dividing or in between... Read More

Nervous System

    THE is the most complicated and highly organized of the various systems which make up the human body. It is the... Read More

External capsule

Definition noun (anatomy) A thin, white sheet of whiter matter fibers in the brain between the putamen and... Read More

Axon hillock

Axon Hillock Definition What is axon hillock? If you are familiar with the different parts of the neuron, the axon hillock... Read More

Solid

solid 1. Having the constituent parts so compact, or so firmly adhering, as to resist the impression or penetration of... Read More

Helix

Helix (Science: chemistry molecular biology) a spiral structure in a macromolecule that contains a repeating pattern. A... Read More

Infundibuliform

Infundibuliform 1. Having the form of a funnel or cone; funnel-shaped. 2. (Science: botany) same as funnelform. Origin: L.... Read More

Felidae

Definition noun A taxonomic family of Carnivora embracing domestic and wild cats such as lions and tigers Supplement Felidae... Read More

Dopamine

Definition noun, plural: dopamines 3,4-dihydroxyphenethylamine (chemical formula: C8H11NO2); a neurotransmitter or a hormone... Read More

Acorn

Acorn 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

Vascular plants

Definition of Vascular plants The term 'vascular' is derived from the Latin word vāsculum, vās, meaning "a container and... Read More

Flask

Flask 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

Fibre

Definition noun, plural: fibres (1) (anatomy) Any elongated, thread-like structure, e.g. nerve fiber and muscle fiber (2)... Read More

Revolution

revolution 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

Sensory Systems

A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and... Read More