NEET JEE BIOLOGY CBSE CHEMISTRY
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โค๏ธSOME TERMS RELATED TO EVOLUTIONโค๏ธ
๐ Adaptation:
๐ถChanging to fit a niche or survive in an environment
๐ Anatomy:
๐ถStudy of the structures of organisms
๐ Artificial Selection:
๐ถCharacteristics selected by humans
๐ Biogeography:
๐ถStudy of how species are distributed across the Earth
๐ Biological Species:
๐ถIndividuals that can interbreed and produce viable offspring
๐ Catastrophism:
๐ถChanges in species that happen because of quick and often violent natural phenomena
๐ Cladistics:
๐ถMethod of classifying species in groups based on ancestral relationships
๐ Cladogram:
๐ถDiagram of how species are related
๐ Coevolution:
๐ถOne species changing in response to changes in another species that it interacts with, particularly predator/prey relationships
๐ Creationism:
๐ถBelief that a higher power created all life
๐ Darwinism:
๐ถTerm commonly used as a synonym for evolution
๐ Descent With Modification:
๐ถPassing down traits that might change over time
๐ Directional Selection:
๐ถType of natural selection in which an extreme characteristic is favored
๐ Disruptive Selection:
๐ถType of natural selection that favors both extremes and selects against the average characteristics
๐ Embryology:
๐ถStudy of the earliest stages of development of an organism
๐ Endosymbiotic Theory:
๐ถCurrently accepted theory as to how cells evolved
๐ Eukaryote:
๐ถOrganism made of cells that have membrane-bound organelles
๐ Evolution:
๐ถChange in populations over time
๐ Fossil Record:
๐ถAll known traces of past life ever found
๐ Fundamental Niche:
๐ถAll available roles an individual can play in an ecosystem
๐ Genetics:
๐ถStudy of traits and how they are passed down from generation to generation
๐ Gradualism:
๐ถChanges in species that happen over long periods of time
๐ Habitat:
๐ถArea in which an organism lives
๐ Homologous Structures:
๐ถBody parts on different species that are similar and most likely evolved from a common ancestor
๐ Hydrothermal Vents:
๐ถVery hot areas in the ocean where primitive life might have begun
๐ Intelligent Design:
๐ถBelief that a higher power created life and its changes
๐ Macroevolution:
๐ถChanges in populations at the species level, including ancestral relationships
๐ Mass Extinction:
๐ถEvent in which large numbers of species died out completely
๐ Microevolution:
๐ถChanges in species at a molecular or gene level.....
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Very important points - Human Reproduction
๐Uterus also called womb.
๐ Longest unstripped muscles of the body are found in the walls of uterus. (During pregnancy)
๐ Clitoris is a homologous to the penis in the male.
๐ Bartholin Glands : It is homologous to Cowper's gland of male
๐ A functional mammary gland is characteristic of all female mammals.
๐ The milk produced during the initial few days of lactation is called colostrum which contains antibodies (IgA) absolutely essential to develop resistance for the new-born babies.
โก๏ธ Liberation of sperms from Sertoli cells of seminiferous tubules is called spermiation.
โก๏ธ Liberation of sperms from testes is called semination.
โก๏ธ Liberation of sperms from body of male is called ejaculation .
โก๏ธ Mammalian sperms are transfered to vagina of female by the process called insemination.
โก๏ธ In 1 ml of semen, 20 to 120 millions of sperms are present in human being.
โก๏ธ Leydig's cells mature at 10 yrs. of age.
โก๏ธ In humans (and most vertebrates), the first polar body does not undergo meiosis II.
โก๏ธ The first polar body is, therefore, formed merely to get rid of unwanted chromosomes.
โก๏ธ 65-74 days are required to complete the cycle of spermatogenesis in human being.
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Basic Math Revision Handwritten Notes
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๐ 2
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