Notes and Study material for Exams
A) What is ultrasound waves and outline its benefits? Waves which have frequency more than 20,000 Hz and which are not audible to human ears but audible to dogs, cats , bats, whales. Ultrasounds are used in various different fields. They are used to detect objects and measure distance. Ultrasound imagining is used in the … Read more
NRHM, National HIV Programme NATIONAL RURAL Health MISSION – THE VISION The National Rural Health Mission (2005-12) seeks to provide effective healthcare to rural Population throughout the country with special focus on 18 states, which have weak public Health Indicators and/or weak
Biopesticides Plants, growing in the wild or in cultivation, face numerous threats from insects, bacteria, viruses, and Fungi, as well as from other plants. Biopesticides are inert substances or living organisms that can help protect plants from such threats. Chemical pesticides can offer similar protection but, by contrast, are neither alive nor made by living … Read more
Reproductive systems The reproductive system in both males and females consists of structures that produce reproductive cells, or gametes, and secrete sex HORMONES. A gamete is a haploid cell that combines with another haploid gamete during fertilization. Sex hormones are chemical messengers that control sexual development and Reproduction. The male reproductive system consists … Read more
The Defence Research and Development Organisation (DRDO) is an agency of the Republic of India, charged with the military’s research and development, headquartered in New Delhi, India. It was formed in 1958 by the merger of the Technical Development Establishment and the Directorate of Technical Development and Production with the Defence Science Organisation. It is … Read more
An ecosystem is defined as the structural and functional unit of Biosphere consisting of community of living beings and the physical Environment, both interacting and exchanging materials between them. Ecosystems vary greatly in size and Elements, but each is a functioning unit of nature. There are two components of ecosystems i.e. biotic and abiotic. Ecosytems … Read more
Microorganisms Microscopic organisms, commonly known as microorganisms or microbes, are found all around us and even inside our bodies. The category ‘Microbes’ includes a massive range of organisms including bacteria, Fungi, viruses, algae, archaea and protozoa. Some of these, such as bacteria and fungi, are well known, but others such as archaea much … Read more
Synthetic fibers (nylon and rayon),, polystyrene Synthetic fibers are made from raw materials such as petroleum, based on chemicals or petrochemicals. These materials are polymerized into a long, linear chemical with different chemical compounds and are used to produce various types of fibers. Synthetic fibers account for about half of all fiber usage, … Read more
Post Harvest Technology And Value Addition in Food Processing While increased productivity is an essential component of a vibrant agricultural sector, improved post-harvest handling and processing is essential to ensure high-quality products reach the markets. Too often, even when the yields are high, producers lose income due to poor post-harvest practices. Effective post-harvest … Read more
Fertilizers All Plants need certain mineral nutrients to survive. These Minerals occur naturally in the Soil and are taken up from the soil by the roots of the plants. Most soils usually have enough of these minerals to keep plants healthy. However, some nutrients are gradually used up by the plants, or are washed out … Read more