Description : (A) MENTION ANY FOUR STRATEGIES ADOPTED BY FLOWERING PLANTS TO PREVENT SELF-POLLINATION. (B) DEFINE THE TERM EMASCULATION.
Last Answer : ANS.(a) (i) SELF INCOMPATIBILITY (ii) PRODUCTION OF UNICELLULAR FLOWERS (iii) ANTHERS AND STIGMA ARE PLACED AT DIFFERENT POSITIONS. (iv) MATURATION OF ANTHER AND STIGMA IS NOT ... EMASCULATION: REMOVAL OF ANTHER BEFORE MATURITY SO AS TO ENSURE CROSS POLLINATION IN SELF POLLINATING FLOWERS.
Description : DESCRIBE THE PROCESS OF OOGENESIS IN HUMAN FEMALE AND DIFFERENTIATE IT WITH SPERMATOGENESIS ON THE BASIS OF TIME OF INITIATION AND THE PRODUCTS FORMED.
Last Answer : ANS. OOGENESIS : DIAGRAMMATIC REPRESENTATION AS GIVEN IN NCERT. DIFFERENCES BETWEEN : OOGENESIS SPERMATOGENESIS (i) STARTS DURING FOETAL LIFE (i) STARTS DURING PUBERTY (ii)PRODUCTS: OVUM (ii) SPERMS
Description : (a) IN WHICH PART OF HUMAN FEMALE REPRODUCTIVE SYSTEM DO THE FOLLOWING EVENTS TAKE PLACE. (i) RELEASE OF FIRST POLAR BODY (ii) RELEASE OF SECOND POLAR BODY (iii) FERTILISATION (iv) IMPLANTATION (b) NAME TWO HORMONES SECREATED ONLY DURING PREGNANCY.
Last Answer : ANS (a) (i) OVARY (ii) FALLOPIAN TUBE (iii) AMPULLA-ISTHAMUS JUNCTION OF FALLOPIAN TUBE (iv) ENDOMETRIUM LINING OF UTERUS (b) HUMAN CHORIONIC GONADOTROPIN AND HUMAN PLACENTAL LACTOGEN
Description : WHAT IS APOMIXIS? DESCRIBE ITS IMPORTANCE?
Last Answer : ANS. IT IS THE PROCESS OF DEVELOPMENT OF SEEDS WITHOUT FERTILISATION. EXAMPLE: SOME SPECIES OF ASTERACEAE AND GRASSES. IMPORTANCE: APOMICTIC GENES CAN BE INTRDUED IN HYBRID SEED INDUSTRY.
Description : DESCRIBE THE CONTRACEPTIVE ACTIONS OF IUDs.
Last Answer : ANS. (i) INCREASES PHAGOCYTOSIS OF SPERMS (ii) SUPPRESS SPERM MOTILITY (iii) SUPPRESS FERTILISING CAPACITY OF SPERMS (iv) MAKES CERVIX HOSTILE TO SPERMS.
Description : DIFFERENTIATE BETWEEN MORULA AND BLASTULA STAGES OF MAMMALIAN EMBRYO.
Last Answer : ANS. MORULA: (i) 8 TO 16 CELLED STAGE EMBRYO (ii) SOLID WITHOUT ANY CAVITY BLASTULA: (i) 32 CELLED STAGE EMBRYO. (ii) HOLLOW WITH A CAVITY CALLED BLASTOCOEL
Description : WHAT IS CORPUS LUTEUM ? UNDER WHAT CONDITIONS DOES IT UNDERGO DEGENERATION ?
Last Answer : ANS. THE CORPUS LUTEUM IS FORMED IN THE MAMMALIAN OVARY FROM RUPTURED GRAAFIAN FOLLICLE AFTER OVULATION. IT DEGENERATES IN THE ABSENCE OF FERTILISATION, AS THE LEVEL OF FSH AND LH DROPS.
Description : WRITE THE FUNTION OF EACH OF THE FOLLOWING: (a) MIDDLE PIECE OF HUMAN SPERM (b) LUTEINIZING HORMONE IN HUMAN MALES
Last Answer : ANS. (a) PROVIDES ENERGY FOR MOVEMENT DUE TO PRESENCE OF MITOCHONDRIA. (c) STIMULATES SYNTHESIS AND SECRETION OF ANDROGENS.
Description : STATE ONE ADVANTAGE AND ONE DISADVANTAGE OF CLEISTOGAMY.
Last Answer : ANS. ADVANTAGE: ASSURED SEED SET DISADVANTAGE: INBREEDING DEPRESSION.
Description : WHY IS THE PROCESS OF FERTILISATION IN A FLOWERING PLANT REFFERED TO AS DOUBLE FERTILISATION ?
Last Answer : ANS. DOUBLE FERTILISATION= SYNGAMY + TRIPLE FUSION SYNGAMY= ONE MALE GAMETE + EGG--- ZYGOTE(n) TRIPLE FUSION= ANOTHER MALE GAMETE+ POLAR NUCLEI-PRIMARY ENOSPERM NUCLEUS(3n)
Description : WHEN DO THE OOGENESIS AND THE SPERMATOGENESIS INITIATE IN HUMAN FEMALES AND MALES RESPECTIVELY ?
Last Answer : ANS. OOGENESIS AT THE FOETAL LIFEAND SPERMATOGENISIS STARTS AT PUBERTY.
Description : WRITE THE LOCATION AND FUNCTION OF SERTOLI CELLS IN HUMANS.
Last Answer : ANS. IN THE SEMINIFEROUS TUBULES OF TESTIS, NOURISHES DEVELOPING SPERMS.
Description : AT WHAT STAGE IS THE MAMMALIAN EMBRYO IMPLANTED IN THE UTERUS ?
Last Answer : ANS. AT THE BLASTOCYST STAGE.
Description : NAME THE PROTECTIVE SUBSTANCE PRESENT IN THE POLLEN ENVELOPE TO TIDE OVER ADVERSE CONDITIONS.
Last Answer : ANS. SPOROPOLLENIN.
Description : NAME THE TYPE OF FLOWER WHICH FAVOURS CROSS POLLINATION.
Last Answer : ANS. CHASMOGAMOUS.
Description : WHAT IS PERISPERM ?
Last Answer : ANS. THE RESIDUAL NUCELLUS, WHICH PERSISTS IN THE SEEDS IS CALLED AS PERISPERM.
Description : NAME THE PHENOMENON AND ONE BIRD WHERE THE FEMALE GAMETE DIRECTLY DEVELOPS INTO A NEW ORGANISM.
Last Answer : ANS. PARTHENOGENESIS, TURKEY.
Description : WHY ARE DATE PALMS REFFERED TO AS DIOECIOUS ?
Last Answer : ANS. BECAUSE THEY HAVE UNISEXUAL FLOWERS BORNE ON SEPARATE PLANTS.
Description : What is the transplantation of graft between genetically identical individuals? (1) Autograft (2) Isograft (3) Allograft (4) Xenograft
Last Answer : (2) Isograft Explanation: An isogenic graft or isograft is a graft between genetically identical individuals (i.e. monozygotic twins). Typically, isografts are either grafts between animals of ... strain, between the Fl hybrids produced by crossing inbred strains, or between identical twins.
Description : What is the transplantation of graft between genetically identical individuals ? (1) Autograft (2) Isograft (3) Allograft (4) Xenograft
Last Answer : Isograft
Description : What is the term used for the occurrence of more than one type of morphologically different leaves on the same plant?
Last Answer : Heterophylly
Description : Is it possible that identical twins are genetically superior beings?
Last Answer : Sometimes I wonder the same. As the stepmother of twins I find it remarkable how in sync they are – like a sixth sense that is definitely unique to twins. Makes you curious.
Description : Why would one twin excel in a sport yet the other be quite the opposite considering they are genetically identical in every way?
Last Answer : it goes back to the nature vs nurture debate. How much of what we do is based on genetics and how much is based on events that happen to us. They may be genetically similar but they no doubt have different personalities and interest.
Description : All of us 6.8 billion people on Earth are almost identical genetically - If more people were aware of this, would this replace racism with justice?
Last Answer : You’d think so but politics has a way of reinforcing xenophobia.
Description : Are homologous chromosomes genetically identical? -Biology
Last Answer : answer:
Description : Tissue culture technique can produce infinite number of new plants from a small parental tissue. The economic importance of the technique is in raising (a) genetically uniform population ... homozygous diploid plants (c) new species (d) variants through picking up somaclonal variations.
Last Answer : (a) genetically uniform population identical to the original parent
Description : Immunodeficiency: a) A localized protective reaction of tissue to irritation, injury, or infection, characterized by pain, redness, swelling, and sometimes a loss of function b) A disorder or deficiency ... effect and damage the liver. e) It is an immunity disorder which is genetically transferred.
Last Answer : Ans: B
Description : Which of the following terms relates to the mating of genetically-related individuals ("blood relatives")? a) familialism (pron: feh-mil-yel-ism) b) kinship genetics c) consanguinity (pron: kon-sang-gwin-eh-tee) d) none of these
Last Answer : ANSWER: C -- CONSANGUINITY
Description : Which of the following statements defines culture? a) The learned patterns of behavior, beliefs, and values that can be attributed to a particular group of people. Included among ... . The classification of a group based upon certain distinctive characteristics describes the term ethnicity.
Last Answer : a) The learned patterns of behavior, beliefs, and values that can be attributed to a particular group of people. Included among characteristics that distinguish cultural groups are manner of dress, values, artifacts, and health beliefs and practices.
Description : Which organs are morphologically different but perform the same function? -Do You Know?
Description : Sexual reproduction in Spirogyra is an advanced feature because it shows (a) different sizes of motile sex organs (b) same size of motile sex organs (c) morphologically different sex organs (d) physiologically differentiated sex organs
Last Answer : (d) physiologically differentiated sex organs.
Description : The medium which allows the growth of more than one microorganisms of interest but with morphologically distinguishable colonies is known as A- selective medium B- enrichment medium C- differential medium D- none of these
Last Answer : differential medium
Description : Which organs are morphologically different but perform the same function?
Last Answer : Analogous organs
Description : The Fovea Palatinae are: A. Foramina covering the lesser palatine nerves and vessels B. Morphologically related to the formation of the premaxilla C. Located on either sides of the midline close to the junction of the hard and soft palate D. Closely related to the rugae of the palate
Last Answer : C. Located on either sides of the midline close to the junction of the hard and soft palate
Description : During mitosis, the eukaryotic cell nucleus splits in two, followed by division of the parent cell into two daughter cells. Mitosis progresses through five separate morphologically distinct phases. Name, in order, these five phases of mitosis.
Last Answer : Prophase, prometaphase, metaphase, anaphase, and telophase.
Description : Can two normal individuals of the same species with sexual reproduction have identical genomes and identical karyotypes ? How the human karyotype is usually represented?
Last Answer : Except for clones (individuals created from nucleus transplantation, like the Dolly sheep) and monozygotic twins, it is very improbable the genomes of two individuals of the same species and generated by sexual ... normal karyotype is represented by the formula 44+XX for women and 44+XY for men.
Description : A bacterial colony containing DNA made up of 100% N15 nitrogen bases is allowed to replicate in a medium containing N14 bases. After one round of replication the result would be a) All individuals ... Only 50% individuals would be hybrids d) All individuals would have DNA made up of 100% N14
Last Answer : b) All individuals will be hybrids
Description : A genetically diseased father (male) marries with a normal female and gives birth to 3 carrier girls and 5 normal sons. It may be which type of genetic disease? (a) Sex-influenced disease (b) Blood group inheritance disease (c) Sex-linked disease (d) Sex-recessive disease
Last Answer : (c) Sex-linked disease
Description : Which of the following terms refers to Leininger's description of the learned and transmitted knowledge about values, beliefs, rules of behavior, and lifestyle practices that guide a ... transmitted characteristics. d) Subculture Subculture refers to a group that functions within a culture.
Last Answer : a) Culture Leininger was the founder of the specialty called transcultural nursing and advocated culturally competent nursing care.
Description : Is there value in resisting a new technology (genetically modified foods, for instance), which, while potentially harmful in the short term, could save millions of lives in the future?
Last Answer : There’s really no point of resisting anything. If it happens it will happen.
Description : The term 'GM food' refers to the food - (1) that grows under genetic measures (2) that is genetically modified (3) that grows under geographical modification (4) with greater glucose metabolism
Last Answer : (2) that is genetically modified Explanation: Genetically, modified foods (GM foods) are foods derived from genetically modified organisms (GM0s), such as genetically modified crops or ... food organisms include selective breeding; plant breeding, and animal breeding, and somaclonal variation.
Description : The term ‘GM food’ refers to the food (1) that grows under genetic measures (2) that is genetically modified (3) that grows under geographical modification (4) with greater glucose metabolism
Last Answer : that is genetically modified
Description : The term intra-individual differences refers to Options: A) Differences among the various in a given individual B) Differences in a given trait between two or more individuals C) Differences in a ... curricula D) Differences in a given trait in a given individual associated with errors of measures
Last Answer : A) Differences among the various in a given individual
Description : What term would best be used to describe an organism possessing two identical gene for a trait?
Last Answer : homozygous
Description : What term would best be used to describe an organism possessing two identical genes for a trait?
Last Answer : Need answer
Description : What term is used to describe organisms composed of identical and?
Description : Why Asians as a group (not individuals) because their culture that does encourage self-centeredness are accused of being selfish and destroy the World Economy?
Last Answer : Sigh.
Description : How much is accent influenced by the successful individuals within a language group?
Last Answer : Removed by self. Thought better of it. Never mind. Bad call.
Description : "If a deadly plague swept across the globe and you and ONLY ten other people were the only ones left alive, who would who want to have in that group of 10 individuals?
Last Answer : In no particular order: Colon Powell (leadership) Barack Obama (morale) Leslie Fang (my doctor) Giada DeLaurentis (gotta eat) Isla Fisher & Amy Adams (ahem) David Sedaris & Paula Poundstone (great stories) Norm Abrahms (handy) Prince (entertainment)
Description : oversimplified images of traits of individuals who belong to a particular social group are -General Knowledge
Last Answer : Oversimplified images of traits of individuals who belong to a particular social group are social stereotypes.