29 results found

Search Results for: age groups

Age groups

Age groups persons classified by age from birth (infant, newborn) to octagenarians and older (aged, 80 and... Read More

Independent variable

Independent Variable Definition To define an independent variable, let us first understand what a variable is. The word... Read More

Population Growth and Survivorship

By: Maria Victoria Gonzaga Previously, we learned about biodiversity and endemism. Now, let's look at the... Read More

Angiosperm

Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More

Hyaline cartilage

Hyaline Cartilage Definition Before we define hyaline cartilage, let us understand what cartilage is. What is cartilage? Is... Read More

Balanced diet

What is a balanced diet? What is the definition of a balanced diet? A nutritionally balanced diet fulfills all nutritional... Read More

Fecundity

Fecundity Definition The meaning of fecundity is the reproductive rate (fecundity rate) or the performance of an individual... Read More

Age distribution

Age distribution The frequency of different ages or age groups in a given population. The distribution may refer to either... Read More

Kingdom Animalia

Kingdom Animalia Definition Each person can say that they know of or can name at least one animal. However, do people know... Read More

Osteocyte

Osteocyte Definition The osteocyte is a mature bone cell. Other bone cell types are osteoprogenitor cells, osteoblasts, and... Read More

Enzyme

An enzyme is a biomolecule that can be synthesized biologically (naturally occurring) or through other processes... Read More

Genotypic ratio

Genotypic Ratio Definition To understand 'Genotypic ratio', let us first understand the terms: 'Genotype' and 'Phenotype'.... Read More

Human

Human Definition A human is a bipedal hominin characterized by having a higher and vertical forehead compared with earlier... Read More

Animal

Animal Definition An animal (plural: animals) refers to any of the eukaryotic multicellular organisms of the biological... Read More

Xylem

Xylem Definition Xylem is defined as a plant tissue that transfers water and nutrients from roots to all over the plant... Read More

Tree

“The biological diversity is plenty if you look around yourself a little closely; with an eye for life!” … People... Read More

Health transition

Health transition Demographic and epidemiologic changes that have occurred in the last five decades in many developing... Read More

Examples of Natural Selection

Reviewed by: Mary Anne Clark, Ph.D. Darwin's Finches Darwin's finches are an excellent example of the way in... Read More

Symbiosis

Symbiosis Definition What is symbiosis? Symbiosis can be defined as any kind of relationship or interaction between two... Read More

Assimilation

Assimilation Definition What is assimilation? Assimilation in biology is defined as the process in which living organisms... Read More

Genetic Information and Protein Synthesis

Genetic Code Genes are sequences of DNA nucleotides that carry and transmit the information specifying amino acid sequences... Read More

Ethmoid air cells

Definition noun The numerous tiny-walled, fluid-filled cells that lie in the ethmoid bone of the skull (i.e. specifically... Read More

Cell differentiation

Cells are often described as the building blocks of life as they are the smallest unit used to build up organisms. Cells can... Read More

Progesterone

Definition noun, plural: progesterones A progestogen hormone, with a chemical formula of C21H30O2, naturally produced in... Read More

Phospholipid

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

Imprinting

What does imprinting mean? Have you watched the TV cartoon show “Tom and Jerry” with an episode of a duck and its... Read More

Controlled experiment

Definition noun A scientific investigation in which both the control group and experimental group(s) are kept under... Read More

Anatomy

Anatomy Definition Often we hear the term 'anatomy' while learning about the body and how it works. What is anatomy? What... 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