Here is the all in one pH value of all the acids bases. First you know about something more about this topic – What is pH ? pH is quantitative measure of the acidity or basicity of liquid solutions(aqueous also) pH less than 7 means it’s acidic. pH greater than 7 means it’s basic […]
#Some_Important_Questions# *⭕️CELL⭕️* The word cell came from the latin word. *⭕️Ans: Cellula* All living organisms are made up of *⭕️Ans: Cell* ⭕️Study of cell – *Cytology* ⭕️Study of tissue – *Histology* ⭕️The physical unit of life *⭕️Ans: Protoplasm* ⭕️Who invented the cell? *⭕️Ans: Robert Hook in 1665* ⭕️Cell theory was proposed by? *⭕️Ans: M.J.
BIODIVERSITY NCERT…. Revision point 🐟🐟 There are about 20,000 species of ants, 3,00,000 species of beetles, 28,000 species of fishes & 20,000 species of orchids 🐛🐛 Term biodiversity was popularised by Edward wilson 🐝🐝 India has 50,000 genetically different strains of rice and 1000 varieties of mango 🐞🐞 Acc to IUCN (2004), No.of species
Atomic Physics Revision Notes on Atomic Physics:- e/m of an electron (Thomson Method): (a) e/m of a particle is called the specific charge of the particle. e/m = v/rB Here, r is the radius of curvature, B is the strength of magnetic field, v is the velocity, e is the charge on cathode ray particle
Phylum Porifera 👉Mnemonic: Sponges— Pores All Your Sides. Pore – Porifera All – Spongilla Your – Euspongia, Sides – Sycon. Examples: Spongilla, Euspongia, Sycon 💥PHYLUM COELENTERATA (CNIDARIA): 💢Examples: Physalia, Obelia, Meandrina, Adamsia, Aurelia, Gorgonia, Pennatula, Hydra. 👉 Mnemonic: Physics Objective exams MeinAdam Aur George Ne Pen Hide kiya. Physics – Physalia Objective – Obelia
IMPORTANT YEARS IN NCERT:- 1731 – Many people of the Bishnoi community sacrifice their lives saving trees (Jodhpur)1770 – Priestley’s experiment by Bell Jar, Mice & Mint plant, Candle.1774 – Discovery of oxygen by Joseph Priestley1838 – Matthias Schleiden-Cell Theory
Write these in your notebook :- #very-important 1: Number of Bones *206* 2: Number of Muscles *639* 3: Number of Kidneys *2* 4: Number of Milk Teeth *20* 5: Number of Ribs *24 (12 pair)* 6: Number of Heart Chamber *4* 7: Largest artery *Aorta* 8: Normal blood pressure *120/80mmHg* 9: Ph of Blood *7.35-7.45
Revision Notes on Inheritance and Variation :- ✍️Numerical aberrations of chromosomes: Each species has a characteristic number of chromosome. Variations or numerical changes in chromosomes (Heteroploidy) can be mainly of two types: (1) Euploidy: The somatic chromosome number in euploids is the exact multiple of basic haploid number. In euploidy an organism acquires an additional
Human Reproduction:- Significance of fertilization – (a) It provides a stimulus for the egg to complete its maturation.(b) It activates the ovum to develop into a new individual by repeated mitotic division.(c) Fertilization restores the diploid number of chromosomes (46 in man) in the zygote by adding a male’s haploid set of chromosomes.(d) It makes
Revision Notes:– Fertilization: (a) The process of fusion of male and female gamete is called fertilization or syngamy. (b) The female gamete undergoes development to form a new organism without fertilization. This phenomenon is called parthenogenesis. It is a modification of sexual reproduction. (c) Gametic fusion taking place outside the body i.e. water is called