NEET GURU

Biodiversity and Conservation Mind map Class 12 Chapter 15 NCERT Solutions To download PDF -  Click here to download PDF of Biodiversity and Conservation Mind map To join telegram -  Click here Question 1. Name the three important components of biodiversity. Ans. Different type of living forms like plants animals insects microbes etc together form biodiversity. Biodiversity can have 3 components - (i) Species diversity (ii) Genetic diversity (iii) Ecosystem diversity 2. How do ecologists estimate the total number of species present in the world ? Ans. Since there is very large number of organisms present on earth, it is impossible to count every Organism. Also many Organisms are present in very harsh habitats which are very hard to explore. So, Ecologists try to estimate the total number of species by looking for patterns in biodiversity. For example space is diversity decreases when we move from equator to poles. This pattern in diversity gives an estimate number of different...

Evolution Mind map for NEET and Class 12 Genetics unit NCERT Solutions For Class 12 Biology Chapter 7 Evolution Question 1. Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory . Ans. According to Darwin's theory, organisms which develop favourable variations against a given situation, can survive. When we expose a population of bacteria to antibiotics, most of them die. However some bacteria which have  developed resistance against the antibiotics due to mutations will survive and reproduce. This can form all new population of bacteria which is resistant to an antibiotic. To download PDF -  Click here to download Evolution mind map PDF To join telegram -  Click here Question 2. Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution . Ans. A fossil of a cat-sized reptile that was closely related to an extinct group of flying reptiles known as pterosaurs has been unearthed in Sc...

PDF of the Mind Map if given at end of this page 👇👇 NCERT Solutions for Class 11 Chapter Transport in plants - Question 1- What are the factors affecting the rate of diffusion? Answer: Factors affecting diffusion are -  Concentration gradient, Permeability of membrane; separating the substance, Temperature and Pressure. Question 2 - What are porins? What role do they play in diffusion? Answer: Special type of protein called Carrier proteins form porin channels in the outer membranes of plastids, mitochondria and some bacteria. The porin channels allow the molecules to pass through membrane. Molecules stick to the transport protein and are transported by facilitated diffusion. Question 3 - Describe the role played by protein pumps during active transport in plants. Answer: Protein pumps are used to transport substances against a concentrations gradient. This is a type of active transport. Active transport is carried out by membrane proteins. Pumps are proteins which use energy to ...

Ecosystem Mind map for NEET and Class 12 Biology Chapter 14 - PDF of mind map👇👇 To download PDF -  Click here to download Ecosystem mind map PDF To join telegram -  Click here NCERT Solutions for Class 12 Biology Chapter 14 Ecosystem 1. Fill in the blanks. (a) Plants are called as————- because they fix carbon dioxide. (b) In an ecosystem dominated by trees, the pyramid (of numbers) is————- type. (c) In aquatic ecosystems, the limiting factor for the productivity is————- . (d) Common detritivores in our ecosystem are————- . (e) The major reservoir of carbon on earth is————- . Ans: (a) Autotrophs (b) Spindle (c) Sunlight (d) Earthworm, bacteria & fungi of decay and vulture (e) Oceans 2. Which one of the following has the largest population in a food chain? (a) Producers (b) Primary consumers (c) Secondary consumers. (d) Decomposers Ans: (d) Decomposers has the largest population in a food chain. 3. The second trophic level in a lake is- (a) Phytoplankton (b) Zooplankton (c...

PDF of Mind map of Chapter 13 Organisms and Populations  NCERT Solutions for Class 12 Biology Chapter 13 Organisms and Populations To download PDF of Class 12 Chapter 13 Organisms and Populations -  Click here To join telegram -  Click here 1. How is diapause different from hibernation? Ans . Diapause is a stage of suspended growth where an organism like zooplankton temporarily stop or slow down its growth. Metabolic activities are reduced during this period. Hibernation is also known as winter sleep where an organism reduces it's physical activities and remains in a sleep like state. Hibernation is seen in bears. 2. If a marine fish is placed in a fresh water aquarium, will the fish be able to survive? Why or why not? Ans. If we place a marine fish in freshwater or in aquarium, the fish will not be able to survive due to large change in salt concentration of water. The salt concentration in freshwater is very low in compared to the sea water. 3. Define phenotypic adapt...

Biomolecules : All the carbon compounds that we get from living tissues are called Biomolecules. Biomicromolecules : Molecules which have molecular weights less than one thousand dalton. They are also known as monomers. They are found acid soluble fraction. Biomacromolecules : A biomolecule with molecular weight in the range of ten thousand daltons and above; found in acid insoluble fraction. e.g. polysaccharides, nucleic acids, proteins and lipids. How to analyse chemical composition of living tissues? Living tissue are treated with Trichloroacetic acid and then grinded to get Thick Slurry. Then it is filtered through cheese cloth. This gives us two parts - Filterate (Acid soluble pool) and Retentate (Acid insoluble pool). Primary and secondary metabolites : Primary metabolites have identifiable functions and play important roles in normal physiological process eg. Amino acids, nitrogenous bases, proteins and nucleic acid. Secondary metabolites are product of certain metabolic path...

Oxygen is used by all organism to break down nutrient molecules like protein, glucose and fat to derive energy and use that energy to perform various activities. The process of exchange of oxygen from the atmosphere with carbon dioxide produced by the body is called breathing which is commonly known as respiration. Different type of organism have different ways for respiration. Respiratory organs like gills are used by aquatic arthropods and molluscs. Lungs are present in terrestrial organisms for exchange of gases. Image credit: NCERT Biology class 11 Respiratory volumes - Tidal volume (TV) : Volume of air taken in/given out during normal respiration = 500 mL. Inspiratory Reserve Volume (IRV) : Additional volume of air inspired by forcible inspiration =  2500mL to 3000mL. Expiratory Reserve Volume (ERV) : Additional volume of air, a person can expire by a forcible expiration. Residual volume (RV) : Volume of air remaining in the lungs even after a forcible expiration = 1100 mL...