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CHAPTER 1REPRODUCTION IN ORGANISMS Flashcards

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9926151968LIFESPANThe period from birth to the natural death of an organism0
9926151969REPRODUCTIONBiological process in which an organism give rise to its young ones similar to itself1
9926151970SEXUAL REPRODUCTIONWhen two parents (opp.sex) participate in the reproductive process and also involve fusion of male and female gametes.2
9926151971ASEXUAL REPRODUCTIONWhen offspring is produced by a single parent with or without the involvement of gamete formation.3
9926151972CLONEMorphologically and genetically similar individuals produced by Asexual reproduction4
9926151973VEGETATIVE REPRODUCTIONA type of Asexual reproduction. It takes place in plants. Eg: Eyes of potatoes5
9926151974VEGETATIVE PROPAGULESIn plants, the units of vegetative propagation such as rhizome, offset, are capable giving rise to independent plant.6
9926151975TERROR OF BENGALWater hyacinth Reason: Grows in stagnant water and drains oxygen from the water which leads to the death of fishes.7
9926359058JUVENILE PHASEThe period of growth between the birth of an organism upto reproductive maturity8
9926359059VEGETATIVE PHASEPeriod of growth between the birth of a plant upto flowering9
9926359060REPRODUCTIVE PHASEStage of an organism with the capacity to reproduce.10
9926359061SENESCENT PHASEStage of an organism where it naturally loses its capacity to reproduce11
9926359062OESTRUS CYCLEThe cyclic changes that take place in the reproductive organs during reproductive phase in NON PRIMATES12
9926359063MENSTRUAL CYCLEThe cyclic changes that takes place in the reproductive organs during reproductive phase in PRIMATES13
9926359064EVENTS IN SEXUAL REPRODUCTIONPre - fertilization Fertilization Post - fertilization14
9926359065GametogenesisProcess of formation of 2 types o gametes - male and female15
9926359066GAMETESHaploid cells16
9926359067HOMO GAMETES / ISOGAMOUSWhen male and female gametes are exactly similar morphologically. Eg: Cladophora (algae)17
9926359068HETERO GAMETES / ANISOGAMOUSWhen male and female gametes are dissimilar morphologically. Eg: Fucus (algae)18
9926359069STAMINATEUnisexual male flower19
9926588196PISTILLATEUnisexual female flower20
9926588197UNISEXUALAnimal with either male or female reproductive organs21
9926588198BISEXUALAnimal with both male reproductive organs22
9926588199MEIOCYTESSpecialized cells in sexually reproducing organisms, which can undergo meiosis to produce gametes. Gamete mother cells23
9926588200HOMO THALIC / MONOECIOUSBisexual condition of a plant Eg: Algae chara24
9926588201HETERO THALIC / DIOECIUSUnisexual condition of a plant Eg: Marchantia25
9926588202POLLINATIONThe transfer of pollen grains from anther to the stigma in the flowering plants.26
9926588203FERTILIZATION / SYNGAMYThe fusion of male gamete with female gametes to form zygote27
9926588204PARTHENOGENESISThe female gametes undergo development to form new organisms without fertilization. Eg: Honeybees, turkey, rotifers.28
9926588205EMBRYOGENESISThe process of development embryo from the zygote.29
9926689947STEPS IN EMBRYOGENESISCell division Cell Differentiation30
9926689948EYESPotatoes31
9926689949RHIZOMEGinger32
9926689950BULBILAgave33
9926689951LEAFBUDBryophylllum34
9926689952OFFSETWater hyacinth35
9926689953RUNNERGrass36
9926689954BULBOnion37
9926689955BINARY FISSIONAmoeba38
9926689956BUDDINGYeast, Hydra39
9926689957ZOOSPORESChlamydomonas (algae)40
9926689958CONIDIAPenicillium (fungi)41
9926689959GEMMULESSponges42
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