Important
Topics
Topic 35
Ozone Depletion and Global Warming
The gradual continuous increase in average temperature of surface of the Earth...
Topic 34
Pollution - Types and Causes
Pollution is defined as an undesirable change in physical, chemical or biological...
Topic 33
Conservation of Biodiversity
The occurrence of different types of genes, gene pools, species, habitats...
Topic 32
The Evil-Quartet
There are four major causes of biodiversity loss. These are also known as 'The Evil Quartet'.
Topic 31
Nutrient Cycles
The movement of nutrient elements through various components (abiotic and biotic)...
Topic 30
Decomposition Process
The process of breaking down complex organic matter into inorganic...
Topic 29
Population Interactions
Interspecific interactions are interactions of populations of two different species.
Topic 28
Population Density
population is defined as the total number of individuals of a species in a specific...
Topic 27
Transgenic Animals
Animals whose DNA is manipulated to possess and express an extra (foreign)...
Topic 26
Recombinant DNA Technology
Isolation of DNA, Fragmentation of DNA by restriction endonucleases...
Topic 25
Gel Elctrophoresis
Gel electrophoresis is a technique for separating DNA fragments based on...
Topic 24
Sewage Treatment Plant
Sewage is treated in sewage treatment plants (STPs) to make it less polluting before...
Topic 23
Microbes and their significance
Lactobacillus and Lactic acid bacteria - Convert milk into curd.
Topic 22
Plant Breeding Programme
Earlier methods of plant breeding involved crossing or hybridizing pure lines...
Topic 21
Animal Husbandry
Animal husbandry is the agricultural practice of breeding and raising livestock...
Topic 20
Drugs and Alcohol
When drugs and alcohol for taken for purposes other than medicinal or taken...
Topic 19
Diseases and Causative agents
Diseases, Causative agents and Symptoms
Topic 18
Homologous and Analogous Organs
The organs which are similar in their anatomical structure and origin...
Topic 17
Stanely Miller's Experiment
This theory was given by Oparin and Haldane and stated that life originate...
Topic 16
Lac-operon Concept
The concept of Operon was first proposed in 1961, by Jacob and Monod...
Topic 15
Structure of DNA
The Double helix model of DNA was proposed by James Watson and Francis Crick in 1953...
Topic 14
Sex Determination in Human Beings
The mechanism of sex determination has always been a puzzle before the geneticists...
Topic 13
Chromosomal Disorders | Genetic Disorders
Chromosomal disorders are caused due to absence or excess or abnormal arrangement...
Topic 12
Monohybrid and Dihybrid Cross
The crossing between two plants, with respect to a single contrasting character is...
Topic 11
ART | Artificial Reproductive Techniques
The infertile couples could be assisted to have children through certain special...
Topic 10
Contraceptives
A device or drug or method serving to prevent the pregnancy (control the birth)…
Topic 9
Menstrual Cycle
The rhythmic series of changes that occur in the reproductive organs of female primates...
Topic 8
Oogenesis
The process of formation of a mature haploid female gamete from diploid oogonium...
Topic 7
Spermatogenesis
The process of formation of spermatozoa (sperms) from diploid spermatogonia...
Topic 1
Types of Asexual Reproduction
A type of reproduction by which offspring is produced from s single parent with or without...
Topic 2
Events of Sexual Reproduction
This includes formation of gametes (gametogenesis) and their transfer (gamete transfer)...
Topic 3
Microsporogenesis
The process of formation of microspore from a pollen mother cell by meiosis...
Topic 4
Megasporogenesis
The process of formation of haploid megaspores from the diploid megaspore mother cell (MMC)...
Topic 5
Pollination and its types
The transfer of pollen grains from anther to the stigma a pistil is termed as pollination.
Topic 6
Human Reproductive Systems
The male reproductive system consists of the following: Primary sex organ: testes.