VTU_Notes

Colourful World - Light, Reflection, Refraction, Dispersion of light, spectrum & More

Colourful World – Light, Reflection, Refraction, Dispersion of light, spectrum & More

Light Light enables us to see the objects around us.Our eyes sense the objects by the light reflected by them or when the object emits light.Plants carry out photosynthesis with the help of light energy and prepare their own food .In photocells light can be changed into electrical energy.Light had all the characteristics of energy. …

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Nutrition - Experiment, in Animals, in Amoeba, Life Process, types, holozoic & More

Nutrition – Experiment, in Animals, in Amoeba, Life Process, types, holozoic & More

⦁ What is life process? Activities like respiration, nutrition, growth, movement, response to stimuli, excretion and reproduction is called as life process. ⦁ What is nutrition? The process by which organisms obtain and utilize food is called as nutrition. ⦁ What are the types of nutrition? There are two types of nutrition:*Autotrophic nutrition*Heterotrophic nutrition. What …

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Soil - Meaning, useful of soil, soil erosion, prevention of soil erosion, deforestation, over gazing, soil conservation

Soil Erosion – Meaning, use of soil, soil erosion, prevention of soil erosion, deforestation, over gazing, soil conservation

What is soil ? The topper most layer on the surface of the land is called soil The soil around us contain sand, clay, remains of plant sand animals, air, microorganism and some amount of water. In the beginning there was no soil on the earth. The soil that you see around has taken thousands …

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Nervous System - Things present in nervous system, Reflex Action & More

Nervous System – Things present in nervous system, Reflex Action & More

Can you smell things from a distance? Close your eyes and fell something. Are you able to recognize them? How do yo recognize them?You remember things that you have seen before, sounds you have heard before, and food you may have eaten earlier. The eyes, ears, nose, tongue and skin are your sense organ. Do …

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Infectious Diseases – Disease, Causes, Symptoms, Treatment, Prevention

Infectious diseases are illnesses caused by organisms like bacteria, viruses, fungi, or parasites. There are numerous organisms that live in and on our bodies. What is a disease? A disease is a condition in which certain functions of the body get disturbed and makes the person feel sick. Certain disease are caused by microrganisms such …

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Reproduction – Meaning, Types, Types of sexual reproduction, Pollination, Types of pollination

What is reproduction? Reproduction is one of the basic characteristics of living organism.The act or process of reproducing, more specifically: the process by which plants and animals give birth to offspring, which fundamentally consists of the segregation of a portion of the parental body by a sexual or asexual process and its subsequent growth and …

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Solar System - Planets, Images, Diagram, Brief explanation on all planets

Solar System – Planets, Images, Diagram, Brief explanation on all planets

The Solar System is the gravitationally bound system composed of the Sun and the objects that orbit it either directly or indirectly. The eight planets are the largest of the objects that directly orbit the Sun, with the rest being smaller objects like dwarf planets and small Solar System bodies. Here’s the brief explanation on …

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Food- Introduction, constitution of food, functions and principal of carbohydrates, lipids, vitamins, minerals. Minerals in our diet & More

Food- Introduction, constitution of food, functions and principal of carbohydrates, lipids, vitamins, minerals. Minerals in our diet & More

All organisms have a number of requirements to survive, grow and remain active.0 They include air, water and food. No organisms can survive for long without ,One of the several things that are common to all living beings is that they all need food to survive, remain healthy and to carry out various activities. Humans …

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Ozone Layer - Discovery, Composition, Types, Ozone hole, Characteristics & More

Ozone Layer – Discovery, Composition, Types, Ozone hole, Characteristics & More

Almost always, ozone has only been associated with the hole in the ozone layer and the environmental damage it has caused. The ozone layer’s richness is what makes the hole so significant, and the science behind the hole is far less well-known. Schönbein confirmed its existence in 1840, and Jacques-Louis Soret established the chemical formula …

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0XYGEN CYCLE - History, Cycle, Steps involved, Production, Significance & More

0XYGEN CYCLE – History, Cycle, Steps involved, Production, Significance & More

HISTORY: As we all know, air is a gas mixture. The atmosphere is made up of various gases, including nitrogen (78%), oxygen (21%), argon, and other trace gases (1 percent ).According to Earth’s history, cyanobacteria were the first to introduce oxygen gas through the process of photosynthesis. Previously, around 4.6 billion years ago, there was …

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