Description : Assertion : The nucleus of sperm fuses with the nucleus of ovum , before the formation of ootid . Reason : Diploid nuclear status of organism is essen
Last Answer : Assertion : The nucleus of sperm fuses with the nucleus of ovum , before the formation of ootid . ... . D. If both Assertion & Reason are False.
Description : Assertion : The acrosomal secretions of sperm , help it in entering in the cytoplasm of the ovum . Reason : It contains sperm lysin .
Last Answer : Assertion : The acrosomal secretions of sperm , help it in entering in the cytoplasm of the ovum . ... . D. If both Assertion & Reason are False.
Description : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous tubules lined with male germ cells and sertoli ce
Last Answer : Assertion : Formation of sperm takes place in seminiferous tubules of testes . Reason : Seminiferous ... . If both Assertion & Reason are False.
Description : An abnormal human baby with ‘XXX’ sex chromosomes was born due to (a) fusion of two ova and one sperm (b) fusion of two sperms and one ovum (c) formation of abnormal sperms in the father (d) formation of abnormal ova in the mother.
Last Answer : (d) formation of abnormal ova in the mother.
Description : Assertion : During oogenesis polar bodies are formed . Reason : Primary function of formation of polarbodies is to bring haploidy of ovum .
Last Answer : Assertion : During oogenesis polar bodies are formed . Reason : Primary function of formation of ... . If both Assertion & Reason are False.
Description : Assertion : In the human the temperature of scrotum is `2-2.5^(@)C` lesser then normal body temperature . Reason : Formation of sperm does not occur a
Last Answer : Assertion : In the human the temperature of scrotum is `2-2.5^(@)C` lesser then normal body ... False . D. If both Assertion & Reason are False.
Description : Meiotic division of the secondary oocyte is completed (a) prior to ovulation (b) at the time of copulation (c) after zygote formation (d) at the time of fusion of a sperm with an ovum.
Last Answer : (d) at the time of fusion of a sperm with an ovum.
Description : In human beings, normally in which part, does the sperm fertilize the ovum? -Do You Know?
Last Answer : answer:
Description : Which one of the following statements about human sperm is correct? (a) Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilisation. (b) The ... a sensory structure leading the sperm towards the ovum. (d) Acrosome serves no particular function
Last Answer : (b) The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation.
Description : human beings, normally in which part, does the sperm fertilize the ovum?
Last Answer : Fallopian tube
Description : Assertion (A) :The liability of share holders in a private limited company is limited to the amount. Reason (R) :The number of share holders of a private limited company is limited to fifty. A. Both A and R are ... correct explanation of A C. A is true but R is false D. A is false but R is true
Last Answer : D. A is false but R is true
Description : Assertion : Presence of zona pallucida over the fertilized ovum prevents ectopic pregnancy . Reason : Zona pellucida helps the ovum to penetrate endom
Last Answer : Assertion : Presence of zona pallucida over the fertilized ovum prevents ectopic pregnancy . Reason : Zona ... . If both Assertion & Reason are False.
Description : Assertion : Normally monospermy occurs in most of animals . Reason : Vitelline membrane of ovum checks polyspermy .
Last Answer : Assertion : Normally monospermy occurs in most of animals . Reason : Vitelline membrane of ovum checks ... D. If both Assertion & Reason are False.
Description : Assertion : When sperm enters in egg , one polar body is released in human . Reason : At the time of ovulation eggs found in secondary Oocyte phase .
Last Answer : Assertion : When sperm enters in egg , one polar body is released in human . Reason : At the time ... False . D. If both Assertion & Reason are False.
Description : Extrusion of second polar body from egg occurs (a) simultaneously with first cleavage (b) after entry of sperm but before fertilisation (c) after fertilisation (d) before entry of sperm into ovum.
Last Answer : (b) after entry of sperm but before fertilisation
Description : Explain the events that occur during fertilisation of an ovum in humans. How is it that only one sperm enters the OVUm? -Biology
Last Answer : (i)In humans, the fertilisation of ovum takes place in ampullary-isthmic junction of Fallopian tube. The events that occur during the process of fertilisation are: (a) The sperm reaches the ... that blocks the entry of additional sperms. This ensures that only one sperm can fertilise an ovum
Description : How is the entry of only one sperm ensured into an ovum during fertilisation in humans? -Biology
Last Answer : During fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes (depolarisation) in the membrane that blocks the entry of additional sperms. This ensures that only one sperm can fertilise an ovum
Description : What are both ovum and sperm ?
Last Answer : : Both ovum and sperm are haploid
Description : Fusion of sperm and ovum is
Last Answer : Fusion of sperm and ovum is A. Amphimixis B. Regeneratin C. Fertilization `rarr` Cleavage `rarr` Zygote ... `rarr` Gastrula. D. None of the above.
Description : Various changes in mammalian sperm which prepare it to fertilise the ovum are called :
Last Answer : Various changes in mammalian sperm which prepare it to fertilise the ovum are called : A. Capacitation B. Regeneration C. Growth D. None of these
Description : From a to d which of the following statements are correct ? (a) Fertilisation can occur only if the ovum and sperm are transported simultaneously to t
Last Answer : From a to d which of the following statements are correct ? (a) Fertilisation can occur only if the ovum and sperm ... b and c C. c and d D. b and d
Description : Identical twins are born when (a) Two sperms fertilise one ovum (b) Two sperms fertilise two ovums simultaneously (c) Open sperm fertilizes the ovum and zygote divides into two separate cells developing independently (d) One sperm fertilises two ovums
Last Answer : Ans:(c)
Description : Grey crescent is the area (a) at the point of entry of sperm into ovum (b) just opposite to the site of entry of sperm into ovum (c) at the animal pole (d) at the vegetal pole.
Last Answer : (b) just opposite to the site of entry of sperm into ovum
Description : The second maturation division of the mammalian ovum occurs (a) shortly after ovulation before the ovum makes entry into the fallopian tube (b) until after the ovum has been penetrated by a sperm ... with that of the ovum (d) in the Graafian follicle following the first maturation division.
Last Answer : (b) until after the ovum has been penetrated by a sperm
Description : What happens during fertilisation in humans after many sperms reach close to the ovum? (a) Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida. (b) All sperms except ... all the sperms except one. (d) Only two sperms nearest the ovum penetrate zona pellucida.
Last Answer : (a) Secretions of acrosome helps one sperm enter cytoplasm of ovum through zona pellucida.
Description : Capacitation refers to changes in the (a) ovum after fertilisation (b) sperm after fertilisation (c) sperm before fertilisation (d) ovum before fertilisation.
Last Answer : (c) sperm before fertilisation
Description : The primary mechanism of action of the combined estrogen-progestin oral contraceptive pill is: A. Production of cervical mucus hostile to sperm penetration B. Suppression of FSH and ... Making endometrium unsuitable for implantation D. Enhancing uterine contractions to dislodge the fertilized ovum
Last Answer : B. Suppression of FSH and LH release
Description : 9.Acrosome is important for ----------- . a)ATP production, b)Dissolving membrane of ovum, c)Motility of sperm, d)Nutrition of sperm
Last Answer : b)Dissolving membrane of ovum,
Description : Fertilization of the ovum by the sperm usually occurs in the: a) oviduct b) vagina c) uterus d) ovary
Last Answer : ANSWER: A -- OVIDUCT
Description : Assertion: Cu-T and Cu-7 do not suppress sperm motility. Reason: Hormones released by them affect sperm motility.
Last Answer : Assertion: Cu-T and Cu-7 do not suppress sperm motility. Reason: Hormones released by them affect ... D. If both the assertion and resson are false.
Description : Assertion : Females not participate in the determination of the sex of baby . Reason : Human male is heterogametic .
Last Answer : Assertion : Females not participate in the determination of the sex of baby . Reason : Human male is ... . D. If both Assertion & Reason are False.
Description : In clay soil (A) Swelling and shrinkage characteristics prevail (B) Consolidation continues even after several years of construction (C) Differential settlement is generally prevalent (D) All the above
Last Answer : Answer: Option D
Description : Which one of the following is not correct about the Panchayats as laid down in Part IX of the Constitution of India? (1) The Chairperson of a Panchayat needs to be directly elected by people in ... years. (4) The State Legislature may by law make provisions for audit of accounts of the Panchayats.
Last Answer : (3) Unless dissolved earlier, every Panchayat continues for a period of five years. Explanation: Inflation in the country continued to moderate during 2017-I8. Consumer Price Index (CPI) based ... stated in the Economic Survey 2017-18. There was a significant reduction in food inflation too.
Description : Assertion : Menarche starts around the age of puberty . Reason : After birth oocyte is matured and developed to form Graafian follicle .
Last Answer : Assertion : Menarche starts around the age of puberty . Reason : After birth oocyte is matured and ... D. If both Assertion & Reason are False.
Description : In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation? (a) Gamete Intracytoplasmic Fallopian Transfer (b) Artificial Insemination (c) Intracytoplasmic sperm injection (d) Intrauterine transfer
Last Answer : (b) Artificial Insemination
Description : In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation ? (1) Gamete intracytoplasmic fallopian transfer (2) Artificial Insemination (3) Intracytoplasmic sperm injection (4) Intrauterine transfer
Last Answer : (2) Artificial Insemination
Description : Endosperm is formed during the double fertilisation by (a) two polar nuclei and one male gamete (b) one polar nuclei and one male gamete (c) ovum and male gamete (d) two polar nuclei and two male gametes.
Last Answer : (a) two polar nuclei and one male gamete
Description : If an alien race threatens to destroy Earth unless one hundred healthy humans below fifty years of age voluntarily kill themselves on a daily basis how long would humankind survive?
Last Answer : Indefinetly. The world population is growing at a rate of about 80 million people per year (births – deaths). That’s about 219k people per day. 100 is minuscule in comparison. Also one might assume that people would have more children under such conditions.
Description : The cross-section of a stem of tree has fifty rings, what is the age of the tree? (1) 50 months (2) 5 years (3) 25 years (4) 50 years
Last Answer : (4) 50 years Explanation: Dendrochronology or tree-ring dating is the scientific method of dating based on the analysis of patterns of tree rings, also known as growth rings. Dendrochronology can date ... the vascular cambium, a layer of cells near the bark that is classified as a lateral meristem.
Description : The cross-section of a stem of tree has fifty rings, what is the age of the tree ? (1) 50 months (2) 5 years (3) 25 years (4) 50 years
Last Answer : 50 years
Description : How do the sperm get in the male human?
Last Answer : They don't 'get in' they are made in the testicles
Description : . Select the incorrect statement. (a) Human males have one of their sex-chromosome much shorter than other. (b) Male fruit fly is heterogametic. (c) In male grasshoppers, 50% of sperms have no sex-chromosome. (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.
Last Answer : (d) In domesticated fowls, sex of progeny depends on the type of sperm rather than egg.
Description : 2. A human cell containing 22 autosomes and a Y chromosome is probably a a) somatic cell of male b) sperm cell c) somatic cell of female d) unfertilized egg cell
Last Answer : b) sperm cell
Description : Five male teenagers and five female teens each step into ten separate circles. The males make disparaging remarks to the females while pointing their thumbs downward, and the female teens respond to ... loudly, until only one person is left who is legally performing the maneuver within t -Riddles
Last Answer : The two five-member teams are competing in a hula-hoop endurance contest. The theme song played during the competition is one of The Chipmunks greatest hits called: The Chipmunk’s Hula-Hoop Christmas Song.
Description : Five baby boomer couples each have one child. Each child is a different age than any of the other children. Each child has a favorite toy which is different from any of the other children's favorite ... mother named Marie. The child in the family that eats at McDonalds has a two year age -Riddles
Last Answer : Lisa is married to George, and their 10 year old plays with Nintendo. They like to eat at Burger King. The associations are: Child age 4, mother Regina, Father Larry, trains, KFC Child age 6, mother ... is on every line except one, and then you would know that Marie is the mother on the empty line.
Description : One of the parents of a cross has a mutation in its mitochondria. In that cross, that parent is taken as a male. During segregation of F2 progenies that mutation is found in (a) one-third of the progenies (b) none of the progenies (c) all the progenies (d) fifty percent of the progenies.
Last Answer : (b) none of the progenies
Description : Explain the steps in the formation of an ovum from an oogonium in humans. or Suggest and explain any three Assisted Reproductive Technologies (ART) to an infertile couple. -Biology
Last Answer : Three reproductive techniques for sterile couple are: (i) In vitro fertilisation The fertilisation outside the body in almost similar conditions as that in the body followed by embryo transfer to the ... to form an embryo in the laboratory in which a sperm is directly injected into the ovum.
Description : Why is it that women are paid less than men for the same job even in this day and age?
Last Answer : Well firstly, in some professions that gap varies - some professions allow a woman to make 70 cents per a man's dollar, others 90 cents per a man's dollar. I read this gets further complicated by ... all the same are delusional and they are feminists no matter how much you want to hate the term.
Description : The phase of fruit bud formation continues until _________: a. Anthesis b. Petal formation c. Pollination d. Differentiation
Last Answer : Anthesis
Description : Assertion : In male , urethra is considered as urinogenital duct . Reason : Urethra carries both urine and semen in males .
Last Answer : Assertion : In male , urethra is considered as urinogenital duct . Reason : Urethra carries both urine ... D. If both Assertion & Reason are False.