70 results found

Search Results for: annual

Plant Meristems and Growth

A common mistake that many people assume is that an increase in size means an increase in growth. This is not the case.... Read More

Growth Patterns

When measuring growth, it is more desirable to use dry mass as a reliable indication. However, since you can't just 'suck'... 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

Parallax

parallax 1. The apparent displacement, or difference of position, of an object, as seen from two different stations, or... Read More

Biennial

Biennial Definition What is a biennial plant? Biennial plants are those that live for two years and flower only “once”... Read More

Genus

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

Symbiosis

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

Cytokinin

Plants require growth hormones for their regulated growth. Plant growth hormones or regulators (PGRs) are small organic... Read More

Inherited traits

What are Inherited Traits? The characteristics or traits that are passed from parents to offspring are known as inherited... Read More

"Mummified" Dinosaur Discovered In Montana

By Hillary Mayell An onsite restoration drawing of how "Leonardo" may... Read More

Net primary productivity

In order to keep the biosphere running, different organisms play different roles and functions. Some help in oxygen... Read More

Secondary xylem

Definition noun, plural: secondary xylems The xylem formed as a result of the secondary growth from the vascular... Read More

Density dependent factor

Density-dependent factors are the limiting factors of an ecosystem that regulate population growth in a density-dependent... Read More

Hyaluronic acid

Definition noun A linear mucopolysaccharide that is a major component of tissues, such as connective, epithelial and neural... Read More

Cellular respiration

Cellular Respiration Definition What is cellular respiration in simple terms? Cellular respiration can be defined simply as... 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

Nonsense mutation

A nonsense mutation is the type of point mutation that renders the translation process useless by coding for a stop/nonsense... Read More

Microelectrode

Definition noun, plural: microelectrodes An electrode with a tip having dimensions of the order of one micrometer, thereby... Read More

Producer

Producer Definition Producers are organisms that can produce organic matter using an external energy source. They include... Read More

Bivalent

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

Enzyme

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

Glycocalyx

What is the Glycocalyx? The glycocalyx is a polysaccharide-based gel-like, highly hydrous cellular thin layer, covering... Read More

Cilium

Cilia Definition Cilia are hair-like structures found on the surface of many types of cells, including some mammalian... Read More

Krebs cycle

Krebs cycle, also known as the citric acid cycle or tricarboxylic acid (TCA) cycle, is a fundamental metabolic pathway that... Read More

Semilunar valve

The human heart structure consists of heart chambers (2 atria and 2 ventricles) that differ functionally from each other.... Read More

Electrotropism

Definition noun Growth or movement of a cell or an organism in response to an electric field Supplement In general, tropism... Read More

Infradian rhythm

What is the Infradian Rhythm? An infradian rhythm is a type of biological rhythm that lasts longer than 24 hours, with a... Read More

Otolith

Definition noun, plural: otoliths A crystalline particle of calcium carbonate and a protein adhering to the gelatinous... Read More

Biological system

Biological System Definition A biological system refers to a network of entities that work as a unit, functioning together... 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

Cork cambium

Cork Cambium Definition Cork cambium is a secondary meristematic tissue that has a pivotal role in secondary growth in... Read More

Dendrology

Definition noun The study of wooden plants such as trees and shrubs Supplement Dendrology is the study of wooden plants. It... Read More

Lipogenesis

Lipogenesis Definition Lipogenesis is the process of producing lipid or fat to store biochemical energy for later metabolic... Read More

Control of Growth & Development

Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a day to... Read More

Fruits, Flowers, and Seeds

Flowering plants grow in a wide variety of habitats and environments. They can go from germination of a seed to a mature... Read More

Phospholipid

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

Herbivore

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

Mitochondrion

Mitochondrion Definition What are mitochondria? The term “mitochondrion” comes from the two words of the Greek... 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

Growth

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