Enviromental Education For JTET/CTET

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September 28, 2024

Types of Ecosystems – Terrestrial and Aquatic

Ecosystems can be categorised into two broad categories: natural and artificial. Natural Ecosystems are those ecosystems that operate by themselves under natural conditions. These ecosystems are further categorized as Terrestrial and Aquatic Ecosystems. Terrestrial ecosystems relate to lands, whereas Aquatic ecosystems relate to fresh or marine water. Freshwater ecosystems may be Lotic or Lentic. Lotic are running water ecosystems like springs, streams or rivers, whereas Lentic Fresh Water Ecosystems may be found in standing waters of lakes, ponds, pools, puddles, ditches, swamps, etc. Marine Ecosystems are found in marine waters of salt lakes, seas, oceans and estuaries. Artificial Ecosystems are man-engineered ecosystems like crop fields, artificial ponds and lakes, aquaria, fish ponds, and abandoned mines reclaimed as lakes or water bodies for recreation.

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September 19, 2024

What is an Ecological Niche? How is it related to habitat?

Ecological Niche Dictionary defines the term Niche as a comfortable or suitable position in the life of a living being or a role taken by a type of organism within its community. In other words, an ecological niche is the role and position a species has in its environment, for example, how it meets its food and shelter needs, survives, and reproduces. A species’ niche includes all of its interactions with its environment’s biotic and abiotic factors.

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January 6, 2024

Urban and Rural Waste and their Management

Different activities may generate waste which may be solid or liquid. The quality of both solid and liquid wastes is increasing and if the wastes are disposed in an uncontrolled manner these may cause adverse impact on public health and environment. Hence these wastes need to be managed efficiently so as to safeguard public health and environment. In definitional terms, solid and liquid waste management is the collection, transportation, processing, recycling, treatment and disposal of waste materials.

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January 5, 2024

Shelter for living organisms

The dictionary meaning of a shelter is – something beneath, behind, or within which a person, animal or anything is protected from adverse conditions, and where it can reproduce is called as a shelter.

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December 27, 2023

Phases of technological developments

There are three phases of development of technology- invention, innovation and diffusion. The invention is a process which incorporates wide range of ideas, material things, and human behaviour in new systematic ways.

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December 18, 2023

Dynamics of Population

A population is a group of individuals (all members of a single species) who live together in the same habitat and are likely to interbreed. Each population has a unique physical distribution in time and space.  It may contain individuals of different ages, and its size (density) is likely to change over time. It grows or shrinks according to the reproductive success of its members.

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September 9, 2022

Habitat Destruction

Nearly half of the planet’s plant and animal species live in Rainforests. Less than 2.5 billion acres of Tropical Forest have remained out of four billion acres on the Earth within a few hundred years.

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October 10, 2021 Recommended

Mendel’s Laws of Inheritance

On the basis of his experiments of hybridization Mendel proposed following rules of heredity-1. Law of dominance, 2. Law of iseggregation and , 3.Law of Independent Assortment.

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September 2, 2022 Recommended

Shelter – Definition, Need and Types

The dictionary meaning of a shelter is – something beneath, behind, or within which a person, animal or anything is protected from adverse conditions, and where it can reproduce is called as a shelter.

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