What is the Significance of Accumulation of Variations during Reproduction  Accumulation of Variations during Reproduction  Variation appear during reproduction whether organisms are multiplying asexually or sexually. Each generation provides the next g…

What are the Characteristics of the Kingdom AnimaliaKingdom : Animalia or Animal Kingdom  These organisms are multicellular, eukaryotic and without chlorophyll.The cells possess no cell walls and plastids.Central vacuoles are absent but small vacuoles m…

What is MendelismMendel was a monk in Austria. Mendel performed a number of experiments on the gardan pea plants (Pisum sativum). Mendel’s Law : The theoretical explanation of mendel’s results are now firmly establisas Mendel’s laws of inheritance. These…

What are the Types of Epithelial tissue Epithelial tissue : Epithelial tissue is a simplest as a protective covering.Function of epithelial tissue: Epithelial cover the body surface as an outer layer of skin and provide protection to the underlying  tis…

What are the Physical Resources and Explain the Role of AirThe materials present in natural environment & useful to living organism are called natural resources.Natural Resources can be classified into two groups. Physical resources : E.g, Air, water…

What are the Different Types of Nervous TissueNervous Tissue : The nervous tissue, which contains densely packed nerve cells, called neurons (Gk. neuro = nerve), is present in the brain, spinal cord and sense organs. The neurons are specialized for con…

Do Organic Farmers Use PesticidesOrganic Farming :Manures are natural fertilizers. They are bulky sources of organic matter which supply nutrients in small quantities but organic matter in large quantities. Manures include farmyard manure (FYM). Compost…

What is the Main Function of the Muscle TissueMuscular Tissue :Locomotion and movements are due to muscular tissues contain highly contractile muscle cells.It is made up of muscle fibres.On the basis of their structures and functions, they can be divided…

How do we Store GrainsStorage of food grainsProper and safe storage of food grains is necessary to ensure their availability throughout the year. The various factors that contributes to this loss can be placed into two categories – 1. Biotic Factor : Suc…

What is Binomial NomenclatureIt was Proposed by Carolus Linnaeus.    According to this system of nomenclature, each animal or plant is given two names : the first one is the generic name and the second one is the name of the species.Scientific names are …