CHAPTER 1REPRODUCTION IN ORGANISMS Flashcards

Definition

9926151968	LIFESPAN	The period from birth to the natural death of an organism	0
9926151969	REPRODUCTION	Biological process in which an organism give rise to its young ones similar to itself	1
9926151970	SEXUAL REPRODUCTION	When two parents (opp.sex) participate in the reproductive process and also involve fusion of male and female gametes.	2
9926151971	ASEXUAL REPRODUCTION	When offspring is produced by a single parent with or without the involvement of gamete formation.	3
9926151972	CLONE	Morphologically and genetically similar individuals produced by Asexual reproduction	4
9926151973	VEGETATIVE REPRODUCTION	A type of Asexual reproduction. It takes place in plants. Eg: Eyes of potatoes	5
9926151974	VEGETATIVE PROPAGULES	In plants, the units of vegetative propagation such as rhizome, offset, are capable giving rise to independent plant.	6
9926151975	TERROR OF BENGAL	Water hyacinth Reason: Grows in stagnant water and drains oxygen from the water which leads to the death of fishes.	7
9926359058	JUVENILE PHASE	The period of growth between the birth of an organism upto reproductive maturity	8
9926359059	VEGETATIVE PHASE	Period of growth between the birth of a plant upto flowering	9
9926359060	REPRODUCTIVE PHASE	Stage of an organism with the capacity to reproduce.	10
9926359061	SENESCENT PHASE	Stage of an organism where it naturally loses its capacity to reproduce	11
9926359062	OESTRUS CYCLE	The cyclic changes that take place in the reproductive organs during reproductive phase in NON PRIMATES	12
9926359063	MENSTRUAL CYCLE	The cyclic changes that takes place in the reproductive organs during reproductive phase in PRIMATES	13
9926359064	EVENTS IN SEXUAL REPRODUCTION	Pre - fertilization Fertilization Post - fertilization	14
9926359065	Gametogenesis	Process of formation of 2 types o gametes - male and female	15
9926359066	GAMETES	Haploid cells	16
9926359067	HOMO GAMETES / ISOGAMOUS	When male and female gametes are exactly similar morphologically. Eg: Cladophora (algae)	17
9926359068	HETERO GAMETES / ANISOGAMOUS	When male and female gametes are dissimilar morphologically. Eg: Fucus (algae)	18
9926359069	STAMINATE	Unisexual male flower	19
9926588196	PISTILLATE	Unisexual female flower	20
9926588197	UNISEXUAL	Animal with either male or female reproductive organs	21
9926588198	BISEXUAL	Animal with both male reproductive organs	22
9926588199	MEIOCYTES	Specialized cells in sexually reproducing organisms, which can undergo meiosis to produce gametes. Gamete mother cells	23
9926588200	HOMO THALIC / MONOECIOUS	Bisexual condition of a plant Eg: Algae chara	24
9926588201	HETERO THALIC / DIOECIUS	Unisexual condition of a plant Eg: Marchantia	25
9926588202	POLLINATION	The transfer of pollen grains from anther to the stigma in the flowering plants.	26
9926588203	FERTILIZATION / SYNGAMY	The fusion of male gamete with female gametes to form zygote	27
9926588204	PARTHENOGENESIS	The female gametes undergo development to form new organisms without fertilization. Eg: Honeybees, turkey, rotifers.	28
9926588205	EMBRYOGENESIS	The process of development embryo from the zygote.	29
9926689947	STEPS IN EMBRYOGENESIS	Cell division Cell Differentiation	30
9926689948	EYES	Potatoes	31
9926689949	RHIZOME	Ginger	32
9926689950	BULBIL	Agave	33
9926689951	LEAFBUD	Bryophylllum	34
9926689952	OFFSET	Water hyacinth	35
9926689953	RUNNER	Grass	36
9926689954	BULB	Onion	37
9926689955	BINARY FISSION	Amoeba	38
9926689956	BUDDING	Yeast, Hydra	39
9926689957	ZOOSPORES	Chlamydomonas (algae)	40
9926689958	CONIDIA	Penicillium (fungi)	41
9926689959	GEMMULES	Sponges	42