Description : (i) Mention the event that induces the completion of the meiotic division of the secondary oocyte. (ii) Trace the journey of the ovum from the ovary, its fertilisation and further development until the implantation of the embryo. -Biology
Last Answer : (i)Secondary oocyte completes meiosis-ll only when a sperm enters its cytoplasm. It forms a larger cell, the ootid and a small cell, the second polar body. (ii)The secondary oocyte is ... and inner cell mass.The trophoblast attacheds to endometrium (implantation) and blastocyst gets embedded in it.
Description : Each secondary spermatocyte after second meiotic division produces
Last Answer : Each secondary spermatocyte after second meiotic division produces A. Four haploid spermatids B. ... haploid spermatids D. Two diploid spermatids.
Description : Secondary spermatocytes undergo second meiotic division during spermatogenesis to produce.
Last Answer : Secondary spermatocytes undergo second meiotic division during spermatogenesis to produce. A. ... Spermatogonia `rarr` Sperms D. Spermatogonia
Description : In humans, at the end of the first meiotic division, the male germ cells differentiate into the
Last Answer : In humans, at the end of the first meiotic division, the male germ cells ... Spermatozonia C. Primary spermatocytes D. Secondary spermatocytes
Description : First meiotic division during Oogenesis occurs in:
Last Answer : First meiotic division during Oogenesis occurs in: A. First polar body B. Second polar body C. Primary oocytes D. Secondary polar body
Description : How many meiotic divisions are required during the formation of 500 zzygotes, if in males one meiotic division result in formation of four male gamete
Last Answer : How many meiotic divisions are required during the formation of 500 zzygotes, if in males one meiotic division ... A. 625 B. 500 C. 1000 D. 2500
Description : In angiosperms regarding development of microgametophyte each microspore mother cell undergoes (a) Mitosis to produce 4 microspores (b) Two successive mitosis to form 4 microspores (c) Two successive meiotic division to form 4 microspores (d) Meiosis to produce 4 haploid microspores
Last Answer : Ans. ((d))
Description : n humans, at the end of the first meiotic division, the male germ cells differentiate into the (a) spermatids (b) spermatogonia (c) primary spermatocytes (d) secondary spermatocytes.
Last Answer : (d) secondary spermatocytes.
Description : The figure shows a section of human ovary. Select the option which gives the correct identification of either A or B with function/characteristic (a) B- Corpus luteum - Secretes progesterone (b) A- ... Secretes estrogen (d) A- Primary oocyte - It is in the prophase I of the meiotic division
Last Answer : (a) B- Corpus luteum - Secretes progesterone
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 grasses what happens in microspore mother cell for the formation of mature pollen grains? (a) One meiotic and two mitotic divisions (b) One meiotic and one mitotic divisions (c) One meiotic division (d) One mitotic division
Last Answer : (b) One meiotic and one mitotic divisions
Description : Megaspores are produced from the megaspore mother cells after (a) mitotic division (b) formation of thick wall (c) differentiation (d) meiotic division.
Last Answer : d) meiotic division.
Description : 26. Anaphase in second meiotic division is characterized by: (a) Separation of non-homologous chromosomes (b) Separation of homologous chromosomes (c) Separation of chromatids (d) All of them
Last Answer : Answer: c Separation of chromatids
Description : Meiosis I is reductional division. Meiosis II is equational division due to (a) pairing of homologous chromosomes (b) crossing over (c) separation of chromatids (d) disjunction of homologous chromosomes.
Last Answer : (c) separation of chromatids
Description : When paternal and maternal chromosomes change their materials with each other in cell division this event is called (a) bivalent-forming (b) dyad-forming (c) synapsis (d) crossing-over.
Last Answer : (d) crossing-over.
Description : Which of the following options gives the correct sequence of events during mitosis ? (a) Condensation → Nuclear membrane disassembly → Arrangement at equator → Centromere division → Segregation ... (d) Condensation → Nuclear membrane disassembly → Crossing over → Segregation → Telophase
Last Answer : (a) Condensation → Nuclear membrane disassembly → Arrangement at equator → Centromere division → Segregation → Telophase
Description : Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres. (a) Metaphase I (b) Metaphase II (c) Anaphase I (d) Anaphase I
Last Answer : (c) Anaphase I
Description : “The peace negotiations in Geneva followed the division of Vietnam that set in motion a series of events that turned Vietnam into a battlefield.” Analyse the statement with arguments. -SST 10th
Last Answer : . The peace negotiations in Geneva followed the division of Vietnam that set in motion a series of events that turned Vietnam into a battlefield. . In the peace negotiations in Geneva ... Worried about the communist gaining power, it decided to intervene decisively sending in troops and arms.
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 : Consider the statement which is followed by two arguments (I) and (II): Statement: Should India switch over to a two party system? Arguments: (I) Yes, it will lead to stability of Government. (II) No, ... (II) is strong; (C) Both the arguments are strong. (D) Neither of the arguments is strong.
Last Answer : (C) Both the arguments are strong.
Description : what is difference between mitotic and meiotic interphase ? -Biology
Last Answer : answer:
Description : Variations during mutations of meiotic recombinations are
Last Answer : Variations during mutations of meiotic recombinations are A. Random and directionless B. Randonm and ... and small D. Randonm, small adn directional
Description : In humans the oocyte is maintained in a state of meiotic arrest by the secretion of
Last Answer : In humans the oocyte is maintained in a state of meiotic arrest by the secretion of A. Granulosa cells B. Zona pellucida C. Cumulus oophorus D. Theca.
Description : Identify the meiotic sage in which the homologous chromosomes separate while the sister chromatids remain associated at their centrometres. Or In whic
Last Answer : Identify the meiotic sage in which the homologous chromosomes separate while the sister chromatids remain ... II C. Metaphase I D. Metaphase II
Description : Neurospora is used as genetic material because (a) It has short life cycle of 10 days (b) The product of single meiosis can be easily analysed (c) Meiotic products are linearly arranged in the form of ordered tetrads (d) Is a diploid fungus
Last Answer : Ans:(a)
Description : Total number of meiotic divisions required for forming 100 zygotes/100 grains of wheat is (a) 100 (b) 75 (c) 125 (d) 50
Last Answer : (c) 125
Description : Number of meiotic divisions required to produce 200/400 seeds of pea would be (a) 200/400 (b) 400/800 (c) 300/600 (d) 250/500
Last Answer : (d) 250/500.
Description : Offsets are produced by (a) meiotic divisions (b) mitotic divisions (c) parthenocarpy (d) parthenogenesis
Last Answer : b) mitotic divisions
Description : 1. How many meiotic divisions are required to produce 200 microspores from functional microspore mother cell ? a) 400 b) 50 c) 200 d) 100
Last Answer : b) 50
Description : Offsets are produced by (1) Meiotic divisions (2) Mitotic divisions (3) Parthenocarpy (4) Parthenogenesis
Last Answer : (2) Mitotic divisions
Description : A woman who lived in Germany during World War II wanted to cross the German/Swiss border in order to escape Nazi pursuers. The bridge which she is to cross is a half mile across, over a large canyon. ... , in which time the guard will see her crossing and shoot her. How does she get across? -Riddles
Last Answer : She waits until the guard is inside his hut, then walks halfway across before starting to walk back. The guard, seing she has no papers, sends her 'back'.
Description : Segregation of Mendelian factors (no linkage, no crossing over) occurs during (a) anaphase I (b) anaphase II (c) diplotene (d) metaphase I.
Last Answer : a) anaphase I
Description : Arrange the following events of meiosis in correct sequence (i) Crossing over (ii) Synapsis (iii)Terminalisation of chiasmata (iv) Disappearance of nucleolus (a) (i), (ii), (iii), (iv) (b) (ii), (iii), (iv), (i) (c) (ii), (i), (iv), (iii) (d) (ii), (i), (iii), (iv)
Last Answer : (d) (ii), (i), (iii), (iv)
Description : Match the stages of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below. Column I Column II A. Pachytene (i) Pairing of homologous chromosomes B. Metaphase I (ii) ... , C-(iii), D-(i) (d) A-(iv), B-(iii), C-(ii), D-(i)
Last Answer : (a) A-(iii), B-(iv), C-(ii), D-(i)
Description : Match the following with respect to meiosis. (A) Zygotene (i) Terminalization (B) Pachytene (ii) Chiasmata (C) Diplotene (iii)Crossing over (D) Diakinesis (iv) Synapsis
Last Answer : (b) (iv) (iii) (ii) (i)
Description : On a T.V. channel, four serials A, B, C and D were screened, one on eacn day, on four consecutive days but not necessarily in that order. On which day was the serial C screened ? Statements: I ... (I) and (II) together are not sufficient (d) Both statements (I) and (II) together are necessary
Last Answer : (c) Both statements (I) and (II) together are not sufficient
Description : In the question below is given a statement followed by several assumptions. Find which of the assumption implicit in the statement. Statement: Bank A' has announced reduction of half percentage on the interest rate on ... Implicit (c) If either I or II is Implicit (d) If both I and II are implicit
Last Answer : (b) If only assumption II is Implicit
Description : Consider the statement which is followed by two arguments (i) and (ii). Statement: India should have a very strong and powerful Lokpal. Arguments: (i) Yes, it will go a long in eliminating corruption in ... . (C) Both the arguments are strong. (D) Neither of the arguments is strong.
Last Answer : (A) Only argument (i) is strong.
Description : Consider the statement which is followed by two arguments (I) and (II): Statement: Should persons with criminal background be banned from contesting elections? Arguments: (I) Yes, it will decriminalize ... strong. (C) Both the arguments are strong. (D) Neither of the arguments is strong.
Last Answer : (A) Only argument (I) is strong.
Description : Two statements I and II given below are followed by two conclusions (a) and (b). Supposing the statements are true, which of the following conclusions can logically follow? Statements : I. Some flowers are red. II. Some ... ) follows. (C) Both (a) and (b) follow. (D) Neither (a) nor (b) follows.
Last Answer : (D) Neither (a) nor (b) follows.
Description : In meiosis the daughter cells are not similar to that of parent because of (a) Crossing over (b) Synapsis (c) Both (a) and (b) (d) None of these
Description : Minimum permissible vertical wear on nose of a 52 kg CMS crossing on Rajdhani route is i) 6mm ii) 8mm* iii) 10mm iv) 12 mm
Last Answer : ii) 8mm*
Description : Draw a neat labeled sketch of the following: i) Aqueduct ii) Super passage iii)Level crossing
Last Answer : i) Aqueduct ii) Super passage Iii ) Level Crossing
Description : State any two application of each of following i) Comparator ii) Zero Crossing Comparator
Last Answer : Application of Comparator: 1. Null detectors: A null detector is one that functions to identify when a given value is zero. Comparators can be a type of amplifier distinctively for null comparison ... detector controls the switching so that it occurs at close to zero voltage of the cycle.
Description : 15 mL of water and 10 mL of sulphuric acid are to be mixed in a beaker (i) State the method that should be followed with reason. (ii)What is this process called? -Chemistry
Last Answer : (i) The acid is to be added slowly in water to prevent the mixture to be splashed. The reaction is highly exothermic, therefore, constant cooling should be done. (ii)The process is called dilution.
Description : Which of the following must be followed by the flow of a fluid (real or ideal)? (I) Newton's law of viscosity. (II) Newton's second law of motion. (III) The continuity equation. (IV) Velocity of boundary layer must be zero relative to ... . (A) I, II, III (B) II, III, V (C) I, II, V (D) II, IV, V
Last Answer : (B) II, III, V
Description : In the question given below, there are two statements followed by two conclusions. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the ... queens are kings. (1) Only I follows (2) Only II follows (3) Neither I nor II follows
Last Answer : (3) Neither I nor II follows
Description : Direction for this question: Given below are two statements (a) and (b) followed by two conclusions (i) and (ii). Considering the statements to be true, indicate which of the following conclusions logically follow from the ... follows (C) Only (i) and (ii) follows (D) Neither (i) nor (ii) follows
Last Answer : Answer: A
Description : The given figure is the representation of a certain event at a particular stage of a type of cell division. Which is this stage? (a) Prophase I during meiosis (b) Prophase II during meiosis (c) Prophase of mitosis (d) Both prophase and metaphase of mitosis
Last Answer : (a) Prophase I during meiosis
Description : Which of the following statements about the federal system in India are true? I. The Constitution of India provides for a three-fold distribution of legislative powers between the Union and the State Government. II. Both the Union and ... III (2) II, III and IV (3) I, III and IV (4) I, II and IV
Last Answer : (3) I, III and IV