55 results found

Search Results for: bark

Bark

Definition noun, plural: barks (botany) The outermost covering of stems and roots of woody plants (especially trees), and is... 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

Natural selection

Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... Read More

Plant Tissues

Plants are composed of three major organ groups: roots, stems, and leaves. As we know from other areas of biology, these... Read More

Secondary succession

We all have come across news where forest lands got destroyed by wildfires. Or sometimes we have read about an entire... Read More

Phelloderm

Definition noun, plural: phelloderms (botany) A part of the periderm made up of cells produced inwardly by the cork... Read More

Phloem

Definition noun, plural: phloems A vascular tissue in plants that functions primarily in transporting organic food materials... Read More

Exogen

Definition noun (physiology) The phase of the hair cycle in which the hair is shed (botany) Any of the plants characterised... Read More

Pith

Pith Definition In general, the term "pith" refers to the "soft inner portion" of something. In botany, a pith refers... Read More

New Zealand’s Unique Flora

By: Maria Victoria Gonzaga In the previous lesson, we've come to know some of the most fascinating endemic... Read More

Cork

Definition noun, plural: corks (botany) A part of the periderm that protects the inner plant tissues from mechanical... Read More

Cork cambium

Definition noun, plural: cork cambiums or cork cambia A meristematic tissue that divides mitotically to give rise to new... Read More

Cortex

Definition noun, plural: cortexes, cortices (anatomy) The outer layer or region of a structure or an internal organ (botany)... Read More

Periderm

Definition noun, plural: periderms (botany) An outer covering that replaces the epidermis of certain plants (embryology)... Read More

Tannin

tannin (Science: chemistry plant biology) bitter-tasting, complex aromatic compounds found in the vacuoles of certain plant... Read More

Eucalyptus

Eucalyptus (Science: botany) a myrtaceous genus of trees, mostly Australian. Many of them grow to an immense height, one or... Read More

Null hypothesis

Null Hypothesis Definition Null hypothesis is defined as “the commonly accepted fact (such as the sky is blue) and... Read More

Vascular tissue

Definition noun, plural: vascular tissues (botany) A complex permanent tissue involved in the conduction of materials (e.g.... Read More

Decomposer

Decomposer Definition The organisms that carry out the process of decay or breakdown of the dead organism are known as... Read More

Wood

wood mad; insane; possessed; rabid; furious; frantic. Alternative forms: wode Our hoste gan to swear as if he were wood.... Read More

Tannosome

Definition noun, plural: tannosomes An organelle, particularly a special type of leucoplast, involved primarily in... Read More

Trophic level

In ecology, a trophic level pertains to a position in a food chain or ecological pyramid occupied by a group of organisms... Read More

Secondary phloem

Definition noun The type of phloem derived from the secondary meristems of a vascular plant Supplement The phloem is a... Read More

Adaptive radiation

Definition noun The diversification of several new species from a recent ancestral source, each adapted to utilize or... Read More

Sudoresis

Definition noun The state of sweating excessively Supplement Sweating is the body's physiological means to regulate body... Read More

Medicinal plant

Definition noun Any plant whose roots, leaves, seeds, bark, or plant part is used for therapeutic, tonic, purgative, or... Read More

Haplodiploidy

Definition noun A biological system of sex determination as observed in the Hymenopteran species (e.g. ants and bees) where... Read More

Arrhenotoky

Definition noun A form of parthenogenesis wherein male offspring develops from an unfertilized... Read More

New Zealand’s Biodiversity

Written by: Maria Victoria Gonzaga Peer-reviewed by: Cathy Buntting, Ph.D. and Andrea Soanes Why is New... Read More

Basil

Basil The skin of a sheep tanned with bark. Origin: Corrupt. From E. Basan, f. Basane, LL. Basanium, bazana, fr. Ar.... Read More

Herbivore

Herbivore Definition A herbivore is the primary consumer of the food chain that usually occupies the second trophic level... Read More

Dermal tissues

Dermal tissue (Science: botany) Outer covering of plants, that includes the epidermis and periderm nonliving bark). See:... Read More

Budding

Budding definition In a general context, budding refers to a state where development begins. In science, its meaning refers... Read More

Bass

Bass Origin: a corruption of barse. (Science: zoology) 1. An edible, spiny-finned fish, especially. Of the genera Roccus,... Read More

Skin

Definition noun, plural: skins (anatomy) The external membranous integument of the body; the outer protective covering of... Read More

Ecosystem

Ecosystem Definition An ecosystem is a system consisting of biotic and abiotic components that function together as a unit.... Read More

Milk

milk 1. (Science: physiology) A white fluid secreted by the mammary glands of female mammals for the nourishment of their... Read More

Thread

thread 1. A very small twist of flax, wool, cotton, silk, or other fibrous substance, drawn out to considerable length; a... Read More

Mangrove

Definition noun, plural: mangroves (botany) Any of the trees of the genus Rhizophora (botany) Any of the trees or shrubs... Read More

Decoction

Definition noun, plural: decoctions (1) The act or process or the product of extraction or boiling in a watery fluid. (2)... Read More