A double membrane consisting of an outer and an inner phospholipid bilayer is the nuclear envelope, also known as the nuclear membrane. It is present in the cells of both animals and plants. Two lipid bilayer membranes, an inner nuclear membrane, and an outer nuclear membrane make up the nuclear .....
Anaerobic digestion is the process by which organic matter such as animal or food waste is broken down to produce biogas and biofertilizer. It is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen. The process is used for industrial or domes.....
An amyloplast is an organelle that is present in plant cells involved in different biological pathways. Specifically, amyloplasts are a leucoplast type, a subcategory for colorless, non-pigment-containing plastids. Amyloplasts are plastids that, within internal membrane compartments, generate and.....
Plastids are storage organelles contained in plant cells, including chromoplasts (they carry colored pigments for organisms such as flowers) and chloroplasts (which carry the green pigment found in plant cells). Leucoplast (λευκός leukós “white”, πλαστός plastós “formed, mold.....
Nekton or necton, the assemblage of pelagic animals which swim freely, independent of water movement or wind, from the Greek nekton meaning “to swim”. In 1891, the German biologist Ernst Haeckel coined the concept to distinguish between the active swimmers in a body of water and the passive s.....
Hermit Crab, any crab of the Paguridae and Coenobitidae families (class Crustacea Decapoda order). These crabs are superfamily Paguroidea anomuran decapod crustaceans who adapted to occupy empty scavenged mollusc shells in order to protect their fragile exoskeletons. There are over 800 species of.....
Carrying Capacity is the number or quantity of people or things that can be conveyed by a vehicle or container. The carrying capacity of an environment is the maximum population size of a biological species that can be sustained in that specific environment, given the food, habitat, water, and ot.....
Sea anemone, any member of Actiniaria (class Anthozoa, phylum Cnidaria) invertebrate order, soft-bodied, mainly flowers-like, sedentary marine animals. The ornately colored sea anemone (uh-NEM-uh-nee) takes its name from the equally flashy terrestrial anemone flower. Sea anemones are classified w.....
Brassicaceae (/ˌbræsɪˈkeɪsii/) or Cruciferae (/kruːˈsɪfəri/) the mustard family of flowering plants (order Brassicales), composed of 338 genera and some 3,700 species. This is a genus of flowering plants of medium size and economic value commonly known as the mustards, the crucifers, or .....
Soil is a vast reservoir for a wide diversity of organisms. Soil ecology is the study of how soil organisms interact with other organisms and their environment – their influence on and response to numerous soil processes and properties form the basis for delivering essential ecosystem services......
In biology, symmetry is always approximate; it can be seen as a balanced distribution of duplicate body parts or shapes within an organism’s body. But there are types of biological symmetry more generally found in nature; spherical symmetry, which defines an organism that can be separated i.....
Biradial symmetry is observed in species that exhibit both bilateral and radial symmetry with morphological (internal or external) characteristics. It’s distinct from radial symmetry since the organism is separated by two planes but not more than two. It may represent an intermediate stage .....