General Biology: Definitions and explanations page 16 PDF | Download eBooks
Learn general biology terms with definitions and explanations, biology terminologies (Page 16) for biology degree programs.
- What are Sporophylls?
A sporophyll is a leaf that bears sporangia. both microphylls and megaphylls can be sporophylls. sporophylls ... - What is Stabilizing selection?
An example of stabilizing selection is the birth weight of human babies which is usually in ... - What are Stamens?
The stamen is the pollen-producing reproductive organ of a flower. collectively the stamens form the androecium. ... - What is Starch?
Starch is a complex carbon found in several plants and is made of multiple glucose monomers ... - What are Statoliths?
Statocytes are cells thought to be involved in gravitropic perception in plants, located in the cap ... - What is Stele?
In a vascular plant, the stele is the central part of the root or stem containing ... - What is Stem cell?
A stem cell is a cell with the unique ability to develop into specialized cell types ... - What are Stem cells?
Stem cells are cells that can differentiate into other types of cells, and can also divide ... - What is Stem?
A stem is one of two main structural axes of a vascular plant, the other being ... - What are Steroids?
Steroids are an active biological compound that has four rings that are organized in a special ... - What is Sticky end?
Overhangs are called cohesive ends or sticky ends. they are most often created by restriction endonucleases ... - What is Stigma?
The ovary often supports a long style, topped by a stigma. the mature ovary is a ... - What is Stock?
Grafting and budding are horticultural techniques used to join parts from two or more plants so ... - What is Stomach?
The stomach is a muscular, hollow organ in the gastrointestinal tract of humans and many other ... - What is Stomata?
Stomata are tiny openings or pores in plant tissue that allow for gas exchange. stomata are ... - What is Strata?
A stratum is defined as a layer of sedimentary rock or soil, or igneous rock that ... - What is Stratified squamous epithelium?
A stratified squamous epithelium consists of squamous (flattened) epithelial cells arranged in layers upon a basal ... - What are Strigolactones?
Promote seed germination, control of apical dominance, and the attraction of mycorrhizal fungi to the root. ... - What is Stroke volume?
In cardiovascular physiology, stroke volume (sv) is the volume of blood pumped from the left ventricle ... - What is Stroke?
A stroke is a medical condition in which poor blood flow to the brain results in ... - What is Stroma?
The stroma refers to the colorless fluid surrounding the grana within the chloroplast. within the stroma ... - What are Stromatolites?
Stromatolites or stromatoliths are layered mounds, columns, and sheet-like sedimentary rocks that were originally formed by ... - What is Style?
The style and stigma of the flower are involved in most types of self incompatibility reactions. ... - What is Substrate feeder?
Substrate feeders dwell in or on their food source. leaf miners are tiny substrate-feeding insects that ... - What is Sugar sink?
Sinks are areas in need of nutrients, such as growing tissues. when they are low in ... - What is Sugar source?
Sugars, which are formed by the plant during photosynthesis, are an essential component of plant nutrition. ... - What is Surface tension?
Surface tension is the tendency of fluid surfaces to shrink into the minimum surface area possible. ... - What is Sustainable agriculture?
Sustainable agriculture is farming in sustainable ways which ensures meeting society's food and textile needs in ... - What is Symbiont?
An organism living in symbiosis with another which is usually smaller and lives on the body ... - What is Symbiosis?
Symbiosis is any type of a close and long-term biological interaction between two different biological organisms, ... - What is Symplast?
The symplast of a plant is the inner side of the plasma membrane in which water ... - What are Symplastic domains?
Symplastic domains in plants are defined by spatial limitations on cell-to-cell communication through plasmodesmata (pds) and ... - What is Symplastic route?
The symplast of a plant is the inner side of the plasma membrane in which water ... - What is Synapsis?
Synapsis is the pairing of two homologous chromosomes that occurs during meiosis. during synapsis, a possible ... - What is Synaptonemal complex?
The synaptonemal complex is a protein structure that forms between homologous chromosomes during meiosis. this complex ... - What is Systemic acquired resistance?
Systemic acquired resistance is a resistance response that occurs following an earlier localized exposure to a ... - What is Systems biology?
Systems biology is basically an interdisciplinary field that incorporates the use of multiple approaches in order ... - What is Systole?
The systole is the part of the cardiac cycle during which some chambers of the heart ... - What is Systolic pressure?
Blood pressure is usually expressed in terms of the systolic pressure (maximum during one heartbeat) over ... - What is TATA box?
A tata box is a dna sequence that indicates where a genetic sequence can be read ... - What is Taxonomy?
Taxonomy is the science of defining and naming groups of biological organisms on the basis of ... - What is Technology?
Technology is the collection of skills and techniques, methods and processes that help in production of ... - What are Telomers?
Telomeres are the caps at the end of each strand of dna that protect our chromosomes, ... - What is Temperate phage?
Temperate phages are those that incorporate their viral genome in the host genome and coexist with ... - What is Temperature?
Temperature is the measure of hot or cold with reference to a standard value. basically temperature ... - What is Template strand?
Template strand is the strand that actually acts as a template for the production of a ... - What is Terminator?
Terminator is a section of nucleic acid sequence that marks the end of a gene or ... - What is Testcross?
In genetics, a test cross was first introduced by gregor mendel. this type of test involves ... - What is Testes?
Testicles are the male reproductive gland or gonad in all animals, including humans. they are the ... - What is Theory?
A theory is a plausible or scientifically acceptable general principle or body of principles offered to ... - What is Thermal energy?
Thermal energy comes from heat and comes from the movement of tiny particles with in a ... - What are Thermodynamics?
Thermodynamics deals with the relationships between heat and other forms of energy. in particular, it describes ... - What is Thermogenesis?
Thermogenesis is the process of heat production in organisms. it occurs in all warm-blooded animals, and ... - What is Thermoregulation?
Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even ... - What is Thigmomorphogenesis?
Thigmomorphogenesis is the response by plants to mechanical sensation by altering their growth patterns. in the ... - What is Thigmotropism?
Thigmotropism is a directional growth movement which occurs as a mechanosensory response to a touch stimulus. ... - What is Thrombin?
Thrombin is a serine protease. it is an enzyme that, in humans, is encoded by the ... - What are Thylakoids?
A thylakoid is a membrane-bound compartment inside chloroplasts and also many photosynthetic bacteria such as cyanobacteria. ... - What are Thymine dimers?
Pyrimidine dimers are molecular lesions formed from thymine or cytosine bases in dna via photochemical reactions. ... - What is Thymus?
The thymus is a specialized primary lymphoid organ of the immune system. within the thymus, t ...