Description : In human beings, normally in which part, does the sperm fertilize the ovum? -Do You Know?
Last Answer : answer:
Description : Assertion : Sperm formation continues even in old men but formation of ovum caeses in women around the age of fifty years . Reason : Human male having
Last Answer : Assertion : Sperm formation continues even in old men but formation of ovum caeses in women around the ... D. 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 : 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 : Sex is determined in human beings (a) by ovum (b) at time of fertilisation (c) 40 days after fertilisation (d) seventh to eight week when genitals differentiate in fetus.
Last Answer : (b) at time of fertilisation
Description : In human beings after fertilisation , the structure which gets embedded in the wall of uterus is a) ovum b)embryo c)foetus d)zygote
Last Answer : b)embryo
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 : 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 : 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 : 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 : 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 : 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 : 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 : Normally in the head of a mature sperm cytoplasm is :-
Last Answer : Normally in the head of a mature sperm cytoplasm is :- A. Present in large amount B. Present in ... amount C. Present in very little amount D. Absent
Description : When do I fertilize, what kind of problems might I have with part of the leave turning brown and curling?
Last Answer : Need Answer
Description : The part where fertilization of ovum occurs in placental mammals is :
Last Answer : The part where fertilization of ovum occurs in placental mammals is : A. Ovary B. Uterus C. Vagina D. Fallopian tube
Description : (i)Explain the events taking place at the time of fertilisation of an ovum in a human female. (ii)Trace the development of the zygote up to its implantation in the uterus. (iii)Name and draw a labelled sectional view of the embryonic stage that gets implanted. -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 ... endometrium of the uterus. This is called implantation.(iii) Blastocyst stage implants in the uterus.
Description : What is the structure and function of a human ovum(egg) cell? -Biology
Description : What is the chromosome number in a human ovum? (1) 24 (2) 46 (3) 48 (4) None of these
Last Answer : (2) 46 Explanation: Chromosomes are long Stringy aggregates of genes that carry heredity information. They are composed of DNA and proteins and are located within the nucleus of our cells. Chromosomes determine ... for a total of 46. There are 22 pairs of autosomes and one pair of sex chromosomes.
Description : Match the following columns and select the correct option. Column-I Column-II (A) Placenta (i) Androgens (B) Zona pellucida (ii) Human Chorionic Gonadotropin (HCG) (C) Bulbourethral glands (iii) Layer of the ovum (D) Leydig cells (iv) ... (ii) (iii) (c) (iii) (ii) (iv) (i) (d) (ii) (iii) (iv) (i)
Last Answer : (d) (ii) (iii) (iv) (i)
Description : Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female? (a) Maintenance of the hypertrophical endometrial lining (b) ... the blood stream (c) Retention of well-developed corpus luteum (d) Fertilisation of the ovum
Last Answer : (b) Maintenance of high concentration of sex- hormones in the blood stream
Description : What is the chromosome number in a human ovum ? (1) 24 (2) 46 (3) 48 (4) None of these
Last Answer : 46
Description : Which part of sperm enters in egg in human ?
Last Answer : Which part of sperm enters in egg in human ? A. Complete sperm B. Only head C. Head and middle piece D. Head and acrosome
Description : The kidneys in human beings are a part of the system for (i) nutrition (ii) respiration (iii) excretion (iv) transportation -Biology
Last Answer : Answer. The kidneys in human beings are a part of the system for excretion and it process of the metabolic waste which can eliminated from an organism. In this vertebrates this become primarily carried out ... and other part of the skin. it is more important process in major form of the life.
Description : $ In case of human beings, the process of focusing of an object by the eyes is called dioptric part. ! Diatoms are a type of Nektons.
Last Answer : $ In case of human beings, the process of focusing of an object by the eyes is called dioptric part. ! ... is wrong D. If both As and R are wrong.
Description : The kidneys in human beings are a part of the system for_____?
Last Answer : Excretion
Description : In human beings, the digestion of proteins starts in which part of the alimentary canal? (1) Mouth (2) Stomach (3) Doudenum (4) Ileum
Last Answer : (2) Stomach Explanation: The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach.
Description : How often should I fertilize my garden?
Last Answer : Jerry Baker books have home remedies, most out of amonia, dish soap, thinks most of us have at home. I have had very good luck with his stuff. Tells you how often to apply as well.
Description : Should I fertilize my aloe plant?
Last Answer : aloe plants need a LOT of sunlight to grow. Your best bet is probably to put it somewhere where it gets more direct light. Also, re-potting it in a slightly larger pot might help it to grow faster.
Description : best time to fertilize apple trees
Description : When and how do I fertilize apple trees?
Description : When do I fertilize a plum tree
Last Answer : a little lime & composted horse-cow manure in the spring.
Description : Will Epsom salt help to fertilize an oak tree?
Description : How to fertilize boxwood?
Description : when to fertilize loropetalum
Description : how do i fertilize a purple potato bush?