General Biology: Definitions and explanations page 13 PDF | Download eBooks
Learn general biology terms with definitions and explanations, biology terminologies (Page 13) for biology degree programs.
- What is Water potential?
Water potential is the potential energy of water in a system compared to pure water, when ... - What is Solute potential?
Solute potential is also called osmotic potential because solutes affect the direction of osmosis. the solutes ... - What is Pressure potential?
Unlike ψs, ψp can be positive or negative relative to atmospheric pressure. for example, when a ... - What is Protoplast?
The protoplast comprises of the entire cell, excluding the cell wall. protoplasts can be generated by ... - What is Turgor pressure?
Turgor pressure is the force within the cell that pushes the plasma membrane against the cell ... - What is Plasmolysis?
Plasmolysis is the process in which cells lose water in a hypertonic solution and resulting int ... - What is Turgid?
Turgidity is observed in a cell where the cell membrane is pushed against the cell wall. ... - What is Wilting?
Wilting is the loss of rigidity of non-woody parts of plants and going limp. this occurs ... - What are Aquaporins?
Aquaporins are integral membrane proteins that serve as channels in the transfer of water, and in ... - What is Bulk flow?
Bulk flow is a special kind of movement of water and solutes in the plants. this ... - What is Endodermis?
The endodermis is the central, innermost layer of cortex in some land plants. it is made ... - What is Casparian strip?
The casparian strip is present in the plant cells. it is a band of cell wall ... - What is Xylem sap?
Xylem sap consists primarily of a watery solution of hormones, mineral elements and other nutrients. transport ... - What is Transpiration?
Transpiration is the process in which plants release the water which is present inside the plant, ... - What is Root pressure?
Root pressure is the transverse osmotic pressure within the cells of a root system that causes ... - What is Guttation?
Guttation is the exudation of drops of xylem sap on the tips or edges of leaves ... - What is Cohesion tension hypothesis?
Cohesion tension hypothesis explains the ascent of water from roots to leaves in a plant as ... - What are Circadian rhythms?
A circadian rhythm is a natural, internal process that regulates internal cycles of organisms and repeats ... - What is Abscisic acid (ABA)?
Abscisic acid (aba) is a plant hormone. aba functions in many plant developmental processes, including seed ... - What are Xerophytes?
A xerophyte is a species of plant that has adaptations to survive in an environment with ... - What is Translocation?
Translocation is the movement of materials from leaves to other tissues throughout the plant. plants produce ... - What is Phloem sap?
Phloem sap in plants consists primarily of sugars, hormones, and mineral elements dissolved in water. it ... - What is Sugar source?
Sugars, which are formed by the plant during photosynthesis, are an essential component of plant nutrition. ... - What is Sugar sink?
Sinks are areas in need of nutrients, such as growing tissues. when they are low in ... - What is Self thinning?
The self-thinning rule describes plant mortality because of competition in crowded even-aged stands. this is basically ... - What are Symplastic domains?
Symplastic domains in plants are defined by spatial limitations on cell-to-cell communication through plasmodesmata (pds) and ... - What are Viral movement proteins?
A movement protein is a non-structural protein which is encoded by some plant viruses to allow ... - What is Humus?
Humus denominates the fraction of soil organic matter that is amorphous and without the "cellular cake ... - What is Topsoil?
Topsoil is the upper, outermost layer of soil, usually the top 5to 10 inches. it has ... - What are Soil horizons?
A soil horizon is a layer parallel to the soil surface, whose physical, chemical and biological ... - What is Loams?
Loam is soil composed mostly of sand, silt, and a smaller amount of clay. by weight, ... - What is Cation exchange?
Cation exchange capacity is the total capacity of a soil to hold exchangeable cations. it is ... - What is Sustainable agriculture?
Sustainable agriculture is farming in sustainable ways which ensures meeting society's food and textile needs in ... - What are Aquifers?
An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials. groundwater ... - What is Land subsidence?
Subsidence is the sudden sinking or gradual downward settling of the ground's surface with little or ... - What is Soil salinization?
Soil salinity is the salt content in the soil. the process of increasing the salt content ... - What is Drip irrigation?
Drip irrigation is a type of micro-irrigation system that has the potential to save water and ... - What is No-till agriculture?
No-till farming is a way of growing crops or pasture from year to year without disturbing ... - What is Phytoremediation?
Phytoremediation refers to the technologies that use living plants to clean up soil, air, and water ... - What is Essential element?
The elements that are required for plants to complete their lifecycle are called essential elements. plants ... - What is Hydroponic culture?
Hydroponics is a method of growing plants in a water based, nutrient rich solution. hydroponics does ... - What are Macronutrients?
Consumed in relatively large amounts (grams or ounces), macronutrients (carbohydrates, fats, proteins, water) are used primarily ... - What are Micronutrients?
Micronutrients are essential elements required by organisms in small quantities throughout life to orchestrate a range ... - What are Endophytes?
An endophyte is an endosymbiont, often a bacterium or fungus, that lives within a plant for ... - What is Nitrogen cycle?
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms ... - What is Nitrogen fixation?
Nitrogen fixation is a process by which nitrogen in the air is converted into ammonia (nh3) ... - What are Nodules?
Many leguminous plants contain symbiotic bacteria called rhizobia within the nodules, producing nitrogen compounds that help ... - What is Bacteroid?
The outer host-cell derived symbiosome membrane encloses a space called the symbisome space or the peribacteroid ... - What is Crop rotation?
Crop rotation is the practice of growing a series of dissimilar or different types of crops ... - What is Arbuscular mycorrhizae?
An arbuscular mycorrhiza is a type of mycorrhiza in which the symbiont fungus penetrates the cortical ... - What is Epiphyte?
Epiphytes produce and gather their own nutrients; they do not tap into their hosts for sustenance. ... - What are Parasitic plants?
Many species of these parasitic plants have roots that function as haustoria, nutrient-absorbing projections that tap ... - What are Carnivorous plants?
These carnivorous plants live in acid bogs and other habitats where soils are poor in nitrogen ... - What is Imbibition?
Imbibition is a special type of diffusion when water is absorbed by solids-colloids causing an enormous ... - What is Simple fruit?
A fruit that develops from a single ovary in a single flower. simple fruits may be ... - What is Aggregate fruit?
An aggregate fruit or etaerio is a fruit that develops from the merger of several ovaries ... - What is Multiple fruit?
Multiple fruits, also called collective fruits, are fruiting bodies formed from a cluster of fruiting flowers, ... - What is Accessory fruit?
An accessory fruit is a fruit in which some of the flesh is derived not from ... - What is Asexual reproduction?
Asexual reproduction is a type of reproduction by which offspring arise from a single organism, and ... - What is Fragmentation?
Fragmentation of plants is also known as splitting. it is a method of reproduction is seen ...