A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in (a) somaclonal variation (b) polyteny (c) aneuploidy (d) polyploidy.

A cell at telophase stage is observed by a student in
a plant brought from the field. He tells his teacher
that this cell is not like other cells at telophase stage.
There is no formation of cell plate and thus the cell
is containing more number of chromosomes as
compared to other dividing cells. This would result in
(a) somaclonal variation
(b) polyteny
(c) aneuploidy
(d) polyploidy.
by

1 Answer

Answer :

(d) polyploidy.
by

Related questions

A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics. (a) Cytokinesis Cell plate formed, mitochondria distributed between two daughter cells.(b) Telophase Endoplasmic reticulum and nucleolus not reformed yet. (c) Telophase Nuclear envelope reforms,Golgi complex reforms. (d) Late anaphase Chromosomes move away from equatorial plate, Golgi complex not present.

Description : A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics. (a) Cytokinesis Cell plate formed, mitochondria ... reforms. (d) Late anaphase Chromosomes move away from equatorial plate, Golgi complex not present.

Last Answer : (c) Telophase Nuclear envelope reforms,Golgi complex reforms.

Select the correct option with respect to mitosis. (a) Chromatids separate but remain in the centre of the cell in anaphase. (b) Chromatids start moving towards opposite poles in telophase. (c) Golgi complex and endoplasmic reticulum are still visible at the end of prophase. (d) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.

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Last Answer : (d) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.

Which of the following represents the best stage to view the shape, size and number of chromosomes? (a) Prophase (b) Metaphase (c) Interphase (d) Telophase

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Last Answer : (b) Metaphase

During a visit to a second-grade classroom, a student teacher observed a child spending the time allotted for a worksheet either looking out the window or doodling on his paper. When the student teacher asked the child if he needed help on the assignment, he said no. When asked why he wasn’t doing it, he pointed to another student and said, “She does all her work fast and when she’s done, she gets more work.” The boy’s reaction suggests which of the following about his classroom? Options:

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Last Answer : B) A routine for rewarding students who finish work promptly is not in place.

Somaclonal variation appears in plants

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Polyploidy arises due to change in the (1) number of chromatids (2) structure of genes (3) number of chromosomes (4) structure of chromosomes

Description : Polyploidy arises due to change in the (1) number of chromatids (2) structure of genes (3) number of chromosomes (4) structure of chromosomes

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Polyploidy arises due to change in the (1) number of chromatids (2) structure of genes (3) number of chromosomes (4) structure of chromosomes

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Last Answer : number of chromosomes

A cell has 46 chromosomes at each pole in mitotic telophase. In tis division the number of chromatids at the metaphase was :-

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Is it abuse if a grade school teacher tells her student his I.Q. ?

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Last Answer : No, not abuse in any way, shape or form. Your teacher was, most likely, just sharing the results of your test. There are plenty of gifted under achievers out there and it’s your own fault if you can’t apply your intelligence in your life and career choices.

Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of (a) M phase (b) G1 phase (c) S phase (d) G2 phase.

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Last Answer : (b) G1 phase

With reference to plant tissue culture select the matching pair: (1) Sterile triploid—banana and seedless fruit (2) Somaclonal variations—differences appearing (3) Embryoids—non-zygatic embryo produced from somatic cells (4) Pulses—belong to cruciferae

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Assertion :- Telophase-I leads to formation of diad of cells. Reason :- During Anaphse-I is marked by completion of karyokinesis and cytokinesis as we

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Meiosis is best observed in dividing (a) cells of apical meristem (b) cells of lateral meristem (c) microspores and anther wall (d) microsporocytes.

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The wild type E.coli cells are growing in normal medium with glucose. They are transferred to a medium containing only lactose as sugar. Which of the following changes take place? (a) The lac operon is induced. (b) E.coli cells stop dividing. (c) The lac operon is repressed. (d) All operons are induced.

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Last Answer : (a) The lac operon is induced

At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell? (a) During G2 stage of prophase (b) During S-phase (c) During entire prophase (d) During telophase

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$ Modern wheat is hexaploid. ! Polyploidy leads to the formation of new varieties.

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What happens to the chromosomes during telophase? -Biology

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Last Answer : answer:

If you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into? (a) Metaphase (b) Telophase (c) Anaphase (d) Prophase

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Which of the following statements is incorrect? (a) Some tissues in plants divide throughout the life (b) Cell growth in animals is more uniform as compared to plants (c) Animals have more dead tissues as compared to plants (d) There is no demarcation of dividing and nondividing regions in animals

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In which typical stage are Lampbrush chromosomes observed?

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How does the number of chromosomes in each of the daughter cells produced in mitosis compared to the number of chromosomes in the original cell?

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Which of the following is true for nucleolus? (a) Larger nucleoli are present in dividing cells. (b) It is a membrane-bound structure. (c) It takes part in spindle formation. (d) It is a site for active ribosomal RNA synthesis.

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Last Answer : (d) It is a site for active ribosomal RNA synthesis.

Which of the following is true for nucleolus ? (1) Larger nucleoli are present in dividing cells. (2) It is a membrane-bound structure. (3) It takes part in spindle formation. (4) It is a site for active ribosomal RNA synthesis.

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The middle stage in which chromosomes are arranged in equatorial plate

Description : The middle stage in which chromosomes are arranged in equatorial plate

Last Answer : Ans. Metaphase

What is antisense technology? (a) When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene (b) RNA polymerase producing DNA (c) A cell displaying a foreign antigen used for synthesis of antigens (d) Production of somaclonal variants in tissue cultures

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Pick out the correct statements. (1) Haemophilia is a sex-linked recessive disease. (2) Down’s syndrome is due to aneuploidy. (3) Phenylketonuria is an autosomal recessive gene disorder. (4) Sickle cell anaemia is an X-linked recessive gene disorder. (a) (1), (3) and (4) are correct. (b) (1), (2) and (3) are correct. (c) (1) and (4) are correct. (d) (2) and (4) are correct.

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Last Answer : (b) (1), (2) and (3) are correct.

What cell types remain in a non-dividing stage?

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Last Answer : What is the answer ?

. The stage in which each centromere divides is called a. Prophase b. Metaphase c. anaphase d. telophase

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Colchicines prevent the spindle formation during: (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase

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Last Answer : Ans. ((b))

Colchicines bring about: (a) Polyploidy (b) Cell division (c) Cell elongation (d) Cell differentiation

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Last Answer : Ans. ((a))

Polyploidy level of testa and pollen mother cell of seed

Description : Polyploidy level of testa and pollen mother cell of seed

Last Answer : Ans. 2n

Regarding the human chromosomesa. there are 23 pairs autosomal chromosomes b. the Y chromosome is larger than the X chromosome c. cells containing YO chromosome are not compatible with life d. Barr body is caused by the presence of an inactive X chromosome

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Organisms with cells containing two sets of parental chromosomes are called: a) diploid b) bisomal c) haploid d) autosomal

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Last Answer : ANSWER: A -- DIPLOID

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 identical to the original parent (b) homozygous diploid plants (c) new species (d) variants through picking up somaclonal variations.

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Last Answer : (a) genetically uniform population identical to the original parent

A highschool has a strange principal. on the first day of school he does something weird. There are 1000 lockers and 1000 students. He tells the first student to open every first locker. The second student to open every second locker, and if it is open, to close it. He tells the third student to open every third locker, and if it is open, to close it. He does this until all the students have done it. How many lockers are open at the end? -Riddles

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Last Answer : 31 lockers.

In the manufacture of H2SO4 , vanadium catalyst as compared to platinum catalyst (A) Gives higher conversion efficiency (B) Has a longer life and is not poisoned by arsenic (C) Handles lower SO2 content gas (7 -10% SO2 ), thus increasing the capital cost of the plant (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the (A) Pipe length (B) Fluid velocity in the pipe (C) Time taken to close the valve (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

(3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be plated the negative electrode (cathode) or plate in a galvanic couple. Thus a spoon or other object may be connected by a wire to a plate of nickel. The process that occurs on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

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Last Answer : Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide

Name the green dot like structures in some cells observed by a student when a leaf peel was viewed under a microscope. What is this green colour due to? -Biology

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Last Answer : The green dot-like structures in some cells observed by a student when a leaf peel is viewed under a microscope are chloroplasts. The green colour is due to the presence of green pigment, chlorophyll.

Who can be a good teacher? One Options: A) Whose Students Do Not Need To Ask Questions B) Who Answers All The Questions Asked By Students C) Who Never Encourages Children To Known Something Not In Curriculum. D) Who Always Tells His/her Students That From Where They Can Get Answers To Their Queries.

Description : Who can be a good teacher? One Options: A) Whose Students Do Not Need To Ask Questions B) Who Answers All The Questions Asked By Students C) Who Never Encourages Children To Known Something Not In Curriculum. D) Who Always Tells His/her Students That From Where They Can Get Answers To Their Queries.

Last Answer : C) Who Never Encourages Children To Known Something Not In Curriculum. 

What is aneuploidy? -Biology

Description : What is aneuploidy? -Biology

Last Answer : answer:

Somaclonal variations can be obtained by

Description : Somaclonal variations can be obtained by

Last Answer : Somaclonal variations can be obtained by A. application of colchicines B. irradiations with gamma rays C. tissue culture D. hybridisation

The quickest way to produce homozygous breeding lines from heterozygous parents is through: (a) Half-seed technique (b) doubled haploids (c) Introgression (d) Aneuploidy

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Last Answer : (b) doubled haploids

.Male XX and female XY sometime occur due to (a) deletion (b) transfer of segments in X and Y chromosome (c) aneuploidy (d) hormonal imbalance.

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Last Answer : (b) transfer of segments in X and Y chromosome

The tissue structure deteriorates as the virus multiplies. This deterioration is called A.aneuploidy B.protopathic effect C.cytopathic effect D.none of these

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Last Answer : C.cytopathic effect

$ A cell with actively dividing nucleus is called interphase cell. ! Prokaryotic cells have a true nucleus.

Description : $ A cell with actively dividing nucleus is called interphase cell. ! Prokaryotic cells have a true nucleus.

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The mean score on any class test is the result of Options: A) dividing the sum of all scores by the number of scores B) determining the middle score when all the scores have been listed from the highest to the lowest C) determining the most frequent score. D) Adding all the scores and dividing by the most frequent score

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Last Answer : A) dividing the sum of all scores by the number of scores 

If a student wants to share his problems with his teacher, he visits his teacher for the same at home, In such a condition the teacher should Options: A) Extend reasonable help and boost his morale B) Suggest him to escape from his family C) Contact the student's parents and solve his problem D) Warn him, never visit his home

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Last Answer : A) Extend reasonable help and boost his morale