NEET GURU

We have seen a lot of bad micro-organisms in previous chapters. However other than plants and animals, a lot of microbes form a major component of biological system on earth. Micro-organisms like bacteria fungi and virus are present everywhere from soil to water and even inside our bodies. These can be found in ice cold environment as well as hot environments were temperature maybe as high as 100 degree Celsius. Microbes in household products - We use microbes in lot of daily to daily processes. For example milk is converted into curd by a bacteria called lactobacillus or lactic acid bacteria (LAB). Also bakers use fungus Saccharomyces cerevisiae to get soft bread. Hence this yeast is also called as bakers yeast. Swiss cheese has large holes due to Carbon dioxide production by a bacteria known as Propionibacterium sharmanii. A very famous cheese called Roquefort cheese is right and by growing fungus Penicilliam roqueforti on it. Microbes in industries - Saccharomyces cerevisiae is also...

Human physiology contains a total of 7 chapters in NCERT textbook. The first chapter is digestion and absorption which tells us about our digestive system. The process of conversion of complex food materials into simple forms is called digestion. Human digestive system is divided into two parts -  the alimentary canal and the associated glands. Our digestive system is complete with two openings - anterior mouth and posterior anus. The mouth leads to oral cavity also known as buccal cavity. This cavity contains teeth and tongue. There are three pairs salivary gland situated just outside the buccal cavity. These are sub maxillary gland (in on the lower jaw) parotid gland (on the cheeks) and sub lingual gland (under the tongue). The secretions from the salivary gland comes to buccal cavity through ducts. The Saliva mainly consist of salivary amylase, some ions like sodium ion potassium ion etc. and Lysozyme enzyme. 30% of the total starch is converted into glucose in mouth by using sa...

Flowering plants are also known as angiosperms because they are only kind of plants that produce flower. In the classification system given by RH Whittaker, there are five types of plants that we have to study for class 12th or neet exam. These are algae Bryophytes, Pteridophytes, Gymnosperm and Angiosperm.  Flowers are used since long time to convey important feelings such as love, happiness,  affection, grief, peace, etc. For angiosperm plants, flowers are the site of sexual reproduction. The flowers can have both male and female sex organs or they can be unisexual. Typical flower have four whorls, these are - Calyx, Corolla, Gynoecium and Androecium. To download PDF -  Click Here To join telegram -  Click Here Pre fertilization structure and events - In flower the male reproductive organ is androecium and the female reproductive organ is Gynoecium. The male reproductive organ have stamen which have two part - anther and filament. The anther is a bilobed, dithecous...