SCIENCE

What Is Phototropism? Phototropism is the growth of an organism in response to a light stimulus. Growth towards a light source is referred to as positive phototropism whereas growth away from the light source is referred to as negative phototropism. Positive phototropism is common among the shoots of higher plants while roots usually exhibit negative … Read more

What Are Stomata? Stomata are tiny openings or pores in plant tissue that allow for gas exchange. Stomata are typically found in plant leaves but can also be found in some stems.  A large number of the stomata are located on the underside of plant leaves reducing their exposure to heat and air current. Stomata … Read more

What Is Transpiration? Transpiration is the loss of water from the plant through evaporation at the leaf surface. Transpiration happens when plant opens its stomata to let in carbon dioxide, water on the surface of the cells of spongy mesophyll and palisade mesophyll evaporates and diffuses out of the leaf. Transpiration is the main driver … Read more

What Is Meant By Facilitated Diffusion? Facilitated diffusion also referred to as facilitated transport or passive-mediated transport can be described as passive movement of molecules across the cell membrane through a concentration gradient by means of a carrier molecule (membrane protein).  This process is mediated by two distinct types of transport proteins-channel proteins and carrier … Read more

Permanent tissues are tissues formed when meristematic tissues lose their ability to divide and re-divide after some extent. They can be thin walled or thick walled and have permanent shape. Permanent tissues can either be simple or permanent complex tissues.  The permanent tissue in plants mainly helps in providing support, protection as well as in … Read more

 Angular is an all-encompassing JavaScript platform for building mobile and desktop web application.  Angular is built and maintained by Google.  It is a platform that combines declarative templates, dependency, end to end tooling and integrated best practices to solve development challenges. Angular brings some new features to the JavaScript framework for building desktop, mobile and … Read more

Description An alpha ray is another name for alpha radiation emitted in the type of radioactive decay referred to as alpha decay of a radioactive nucleus. The alpha ray consists of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus. Like all kinds of radioactive decay, alpha decay occurs … Read more

What Is A GM Counter? A Geiger counter also referred to as Geiger-Muller tube is used for detecting and measuring all kinds of radiation including Alpha, Beta and Gamma. The device includes a counter, tube and power supply. The tube is usually cylindrical with wire across the center. The power supply and counter have voltage … Read more

What Are C3 Plants? C3 plants are plants which use only the Calvin cycle for fixing the carbon dioxide from the air. In the first step of the cycle, carbon dioxide reacts with RuBP to produce two 3-carbon molecules of 3-phosphoglyceric acid (3-PGA). Calvin Cycle is the means by which plants assimilate carbon dioxide from … Read more

The reflex or involuntary functions in the body are regulated by a part of peripheral nervous system referred to as Autonomous Nervous system (ANS). The ANS controls the activities of organs and various involuntary muscles such as heart muscles, intestine, stomach and smooth muscles. The Autonomic Nervous System (ANS) can be categorized into two: Sympathetic … Read more