60 results found

Search Results for: morphology

Cell morphology

The basic essence for any living organism is its structural framework which includes appearance, form, and the... Read More

Morphology

Morphology Definition Morphology means the study of the shape and structure of living things from a biological perspective.... Read More

Cytomorphology

Definition noun The study of cellular morphology Supplement Cytomorphology is useful in determining the external features of... Read More

Gamete

Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

Intercalary meristem

The basic structural framework of plants is composed of different types of tissues. Based upon the capacity to divide, the... Read More

Overview of Chirology

Psychodiagnostic Chirology (PDC) is a comprehensive diagnostic discipline applied by professional behavioral specialists in... Read More

Phylogeny

Phylogeny refers to the evolutionary history of the development of a species or of a taxonomic group of organisms. The... Read More

Gram-negative

Definition adjective Of, or relating to the group of bacteria that take the color of the counterstain (i.e. pink) under the... Read More

Apomorphy

Apomorphy Definition Apomorphy (biology definition): A derived trait or characteristic that identifies a species or a... Read More

Kelp

The swaying and winding of kelp in the ocean currents has an entrancing, hypnotic quality that would be the envy of the... Read More

Eubacteria

Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single... Read More

Macrophytes

Introduction    Examples of Macrophytes. (Source: Canada's AquaticEnvironments) ... Read More

Genus

Genus Definition A genus is a taxonomic category ranking used in biological classification that is below family and above... Read More

Phenotype

Phenotype refers to the observable characteristics of an organism as a multifactorial consequence of genetic traits and... Read More

Entomologist

Definition noun A scientist of entomology; a person scientifically studying insects Supplement Entomology is a branch of... Read More

Scaly bud

Definition noun, plural: scaly buds (botany) A bud covered with scales which protect the embryonic parts it... Read More

Bivalent

Bivalent Definition What is bivalent? In genetics, bivalent is used in describing homologous chromosomes (referred to as... Read More

Phylogenetics

Phylogenetics Definition Phylogenetics is the scientific study of phylogeny. It studies evolutionary relationships among... Read More

Protophloem

Definition noun, plural: protophloems The first phloem to develop from the procambium Supplement The phloem is a vascular... Read More

Metaphloem

Definition noun, plural: metaphloems A component of the primary phloem that develops often following the differentiation of... Read More

What is a species? Definition of species, different approaches

What is the definition of species? What does it take to be considered as a species? Ever since there has been an array of... Read More

Phylogenetic tree

Definition noun, plural: phylogenetic tree A tree diagram that shows the evolutionary histories and relationships of groups... Read More

Living things

Living Things Definition A living thing pertains to any organism or a life form that possesses or shows the characteristics... Read More

Taenia saginata

Definition noun A tapeworm species of class Cestoda, and is commonly known as the beef tapeworm that parasitizes humans and... Read More

Zoogloea

Definition noun, plural: zoogleas, zoogleae A jelly-like gram-negative aerobic rod-shaped bacterium that aggregates on... Read More

Gram-positive cocci

Definition noun, singular: gram-positive coccus A group of spherical bacteria that retains the violet stain following gram... Read More

Gram-positive bacilli

Definition noun, singular: gram-positive bacillus A group of rod-shaped bacterial cells that appears violet through Gram's... Read More

Spermiogenesis

Spermiogenesis Definition Spermiogenesis is the stage of spermatogenesis wherein the spermatids differentiate into mature... Read More

Opisthomastigote

Definition noun, plural: opisthomastigotes (protistology) The developmental stage or the morphological form in the lifecycle... Read More

Neisseria mucosa

Definition Noun A gram-negative mucoid cocci bacterium involved in several human infections including cerebrospinal fluid... Read More

Alphaproteobacteria

Definition noun A taxonomic class belonging to the phylum Proteobacteria that includes phototropic proteobacteria,... Read More

Cytogenetics

Definition noun The branch of genetics that is concerned primarily in cellular components, especially chromosomes, in... Read More

Archaellum

Definition noun, plural: archaella A whip-like structure of filaments that extends outside the cell of many... Read More

Protist

Protist Definition What is a protist? All protists are eukaryotes, i.e. organisms with a nucleus. However, they are... Read More

Smooth endoplasmic reticulum

Smooth Endoplasmic Reticulum Definition Smooth endoplasmic reticulum (sER) is (a part of) endoplasmic reticulum that is... Read More

Entomology

Definition noun The scientific study of insects Supplement Entomology is a branch of biology dealing with the study of... Read More

Anther

The floral diversity on this planet is huge. And if you peep into the sub-category of angiosperms among this floral... Read More

Human

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

Species

Every living organism is unique when you observe its morphological, anatomical, molecular, genetic, biochemical, chemical,... Read More

Growth

Growth Definition What is growth in biology? Growth is the irreversible increase of an organism’s size over a given... Read More