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

Colchicines prevent the spindle formation during: (a) Prophase (b) Metaphase (c) Anaphase (d) Telophase
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Ans. ((b))
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Azides and cyanide inhibit: (a) Metaphase (b) Prophase (c) Anaphase (d) Telophase

Description : Azides and cyanide inhibit: (a) Metaphase (b) Prophase (c) Anaphase (d) Telophase

Last Answer : Ans. ((b))

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.

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

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

Which of the following is not a correct combination? (a) Prophase, metaphase, anaphase, telophase (b) Leptonema, zygonema, pachynema, diplonema (c) Diplonema, anaphase I, telophase I, mitosis (d) Prophase II, metaphase II, anaphase II, telophase II

Description : Which of the following is not a correct combination? (a) Prophase, metaphase, anaphase, telophase (b) Leptonema, zygonema, pachynema, diplonema (c) Diplonema, anaphase I, telophase I, mitosis (d) Prophase II, metaphase II, anaphase II, telophase II

Last Answer : Ans:(c)

A cell cycle consists of (a) Mitosis and meiosis (b) GI, the Sphase, and G2 (c) Prophase, metaphase, anaphase and telophase (d) Interphase and mitosis

Description : A cell cycle consists of (a) Mitosis and meiosis (b) GI, the Sphase, and G2 (c) Prophase, metaphase, anaphase and telophase (d) Interphase and mitosis

Last Answer : Ans:(d)

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

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

Last Answer : anaphase

The period of cell division when the nuclear envelop and nucleolus totally disappear is called a. Prophase b. Metaphase c. anaphase d. telophase

Description : The period of cell division when the nuclear envelop and nucleolus totally disappear is called a. Prophase b. Metaphase c. anaphase d. telophase

Last Answer : Metaphase

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

Description : 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

Last Answer : (a) Metaphase

Which stages of cell division do the following figures A and B represent respectively? Fig. A Fig. B(a) Metaphase Telophase (b) Telophase Metaphase (c) Late anaphase Prophase (d) Prophase Anaphase

Description : Which stages of cell division do the following figures A and B represent respectively? Fig. A Fig. B (a) Metaphase Telophase (b) Telophase Metaphase (c) Late anaphase Prophase (d) Prophase Anaphase

Last Answer : (c) Late anaphase Prophase

In meios-I, the Centro mere undergoes: (a) Division between anaphase and Interphase (b) Division between prophase and metaphase (c) Division but the daughter chromosomes do not separate (d) No division

Description : In meios-I, the Centro mere undergoes: (a) Division between anaphase and Interphase (b) Division between prophase and metaphase (c) Division but the daughter chromosomes do not separate (d) No division

Last Answer : Ans. ((d))

A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics? (a) Metaphase - Spindle fibers attached to kinetochores, centromeres split and chromatids separate. (b) Metaphase - Chromosomes moved to spindle equator, chromosomes made up of two sister chromatids. (c) Anaphase - Centromeres split and chromatids separate and start moving away. (d) Late prophase - Chromosomes move to spindle equator.

Description : A stage of mitosis is shown in the diagram. Which stage is it and what are its characteristics? (a) Metaphase - Spindle fibers attached to kinetochores, centromeres split and chromatids ... chromatids separate and start moving away. (d) Late prophase - Chromosomes move to spindle equator.

Last Answer : (b) Metaphase - Chromosomes moved to spindle equator, chromosomes made up of two sister chromatids.

During gamete formation, the enzyme recombinase participates during (a) metaphase I (b) anaphase II (c) prophase I (d) prophase II

Description : During gamete formation, the enzyme recombinase participates during (a) metaphase I (b) anaphase II (c) prophase I (d) prophase II

Last Answer : (c) prophase I

During gamete formation, the enzyme recombinase participates during (1) Prophase-II (2) Metaphase-I (3) Anaphase-II (4) Prophase-I

Description : During gamete formation, the enzyme recombinase participates during (1) Prophase-II (2) Metaphase-I (3) Anaphase-II (4) Prophase-I

Last Answer : (4) Prophase-I

During cell division in apical meristem, the nuclear membrane appears in (a) telophase (b) cytokinesis (c) metaphase (d) anaphase.

Description : During cell division in apical meristem, the nuclear membrane appears in (a) telophase (b) cytokinesis (c) metaphase (d) anaphase.

Last Answer : (a) telophase

In cell division, the phase following the metaphas is known as: a) prophase b) anaphase c) telophase d) extophase

Description : In cell division, the phase following the metaphas is known as: a) prophase b) anaphase c) telophase d) extophase

Last Answer : ANSWER: B -- Anaphase

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

Description : 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

Last Answer : (b) Metaphase

The chromatids become visible in a. interphase b. prophase c. anaphase d. metaphase

Description : The chromatids become visible in a. interphase b. prophase c. anaphase d. metaphase

Last Answer : prophase

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

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

Last Answer : Ans. ((a))

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

Description : 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

Last Answer : (b) During S-phase

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

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

During mitosis, ER and nucleolus begin to disappear at (a) late prophase (b) early metaphase (c) late metaphase (d) early prophase.

Description : During mitosis, ER and nucleolus begin to disappear at (a) late prophase (b) early metaphase (c) late metaphase (d) early prophase.

Last Answer : (d) early prophase

Segregation of Mendelian factors (no linkage, no crossing over) occurs during (a) anaphase I (b) anaphase II (c) diplotene (d) metaphase I.

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

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.

In animal cell xhich structure is thougth to produce the spindle fibres that help separate the sister chromatids during anaphase?

Description : In animal cell xhich structure is thougth to produce the spindle fibres that help separate the sister chromatids during anaphase?

Last Answer : What is the answer ?

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

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

Last Answer : A cell has 46 chromosomes at each pole in mitotic telophase. In tis division the number of chromatids at the metaphase was :- A. 23 B. 46 C. 92 D. 69

The division of cytoplasm is called a. Telophase b. Metaphase c. Cytokinesis d. None of them

Description : The division of cytoplasm is called a. Telophase b. Metaphase c. Cytokinesis d. None of them

Last Answer : Cytokinesis

During the metaphase stage of mitosis, spindle fibres attach to chromosomes at (a) kinetochore (b) both centromere and kinetochore (c) centromere, kinetochore and areas adjoining centromere (d) centromere.

Description : During the metaphase stage of mitosis, spindle fibres attach to chromosomes at (a) kinetochore (b) both centromere and kinetochore (c) centromere, kinetochore and areas adjoining centromere (d) centromere.

Last Answer : a) kinetochore

What is the difference between a prophase and a metaphase?

Description : What is the difference between a prophase and a metaphase?

Last Answer : A: Prophase is the first stage of mitosis, during which the chromatin condenses into visible chromosomes, while metaphase is the stage during which the chromosomes align along the center of the cell.

Morphology of Chromosomes can be best studied at - (1) Interphase (2) Prophase (3) Metaphase (4) Zygotene

Description : Morphology of Chromosomes can be best studied at - (1) Interphase (2) Prophase (3) Metaphase (4) Zygotene

Last Answer : (3) Metaphase Explanation: The morphology of the chromosomes can be distinctly studied at metaphase stage of cell division because at this stage chromosomes are in highly condensed ... constriction (centromere), Secondary constriction (nucleolar organizer), satellite, telomere, and chromosmere.

Morphology of Chromosomes can be best studied at (1) Interphase (2) Prophase (3) Metaphase (4) Zygotene

Description : Morphology of Chromosomes can be best studied at (1) Interphase (2) Prophase (3) Metaphase (4) Zygotene

Last Answer : Metaphase

The period between active cell divisions in called a. anaphase b. metaphase c. interphase d. telephase

Description : The period between active cell divisions in called a. anaphase b. metaphase c. interphase d. telephase

Last Answer : interphase

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

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

Mitotic anaphase differs from metaphase in possessing (a) same number of chromosomes and same number of chromatids (b) half number of chromosomes and half number of chromatids (c) half number of chromosomes and same number of chromatids (d) same number of chromosomes and half number of chromatids.

Description : Mitotic anaphase differs from metaphase in possessing (a) same number of chromosomes and same number of chromatids (b) half number of chromosomes and half number of chromatids (c) half number of ... and same number of chromatids (d) same number of chromosomes and half number of chromatids.

Last Answer : (d) same number of chromosomes and half number of chromatids.

Describe the metaphase of Mitosis

Description : Describe the metaphase of Mitosis 

Last Answer : Ans: Metaphase is the second stage of karyokinesis of mitosis. In this the karyotype of an organism is determined. In this the spindle is totally organized. Chromosomes are in highly condensed ... artifact). The chromatids of chromosomes and the kinetochores of centromere are clearly visible.  

At metaphase, chromosmes are attached to the spindle fibres by their

Description : At metaphase, chromosmes are attached to the spindle fibres by their

Last Answer : At metaphase, chromosmes are attached to the spindle fibres by their A. Centromere B. Satellites C. Secondary cnstrictions D. Kinetochores

At metaphase, chromosomes are attached to the spindle fibres by their (a) satellites (b) secondary constrictions (c) kinetochores (d) centromeres.

Description : At metaphase, chromosomes are attached to the spindle fibres by their (a) satellites (b) secondary constrictions (c) kinetochores (d) centromeres.

Last Answer : (c) kinetochores

Pyramid of number in a grassland/true ecosystem is: (a) Always inverted (b) Always upright (c) Both (a) and (b) (d) Spindle-shaped

Description : Pyramid of number in a grassland/true ecosystem is: (a) Always inverted (b) Always upright (c) Both (a) and (b) (d) Spindle-shaped

Last Answer : Ans. ((b))

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

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

Last Answer : Assertion :- Telophase-I leads to formation of diad of cells. Reason :- During Anaphse-I is marked ... . D. If both Assertion & Reason are false.

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.

Description : 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 ... cells. This would result in (a) somaclonal variation (b) polyteny (c) aneuploidy (d) polyploidy.

Last Answer : (d) polyploidy.

$ Amitosis occurs with spindle formation. ! Amitosis occurs during the formation of gametes in diploid organisms.

Description : $ Amitosis occurs with spindle formation. ! Amitosis occurs during the formation of gametes in diploid organisms.

Last Answer : $ Amitosis occurs with spindle formation. ! Amitosis occurs during the formation of gametes in diploid organisms. ... D. If both As and R are wrong.

Spindle formation takes place during

Description : Spindle formation takes place during

Last Answer : Ans. Metaphase 1

Name the sources of any five of the following biological products. a) Musk b) Codeine c) Cocaine d) Quinine e) Colchicines f) Digilain

Description : Name the sources of any five of the following biological products. a) Musk b) Codeine c) Cocaine d) Quinine e) Colchicines f) Digilain

Last Answer : Answer: a) Abdominal gland of male musk deer b) From opium c) Cocaine d) Bark of cinchona e) From colchicum f) Leaves from the purple foxglove; a plant

Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus

Description : Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus

Last Answer : Ans. ((a))

The formation of multivalents at meiosis in diploid organism is due to: (a) Monosomy (b) Delection (c) Inversion (d) Reciprocal translocation

Description : The formation of multivalents at meiosis in diploid organism is due to: (a) Monosomy (b) Delection (c) Inversion (d) Reciprocal translocation

Last Answer : Ans. ((d))

In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf

Description : In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf

Last Answer : Ans. ((c))

Pyrenoids are the centers for formation of: (a) Proteins (b) enzymes (c) Fat (d) Starch

Description : Pyrenoids are the centers for formation of: (a) Proteins (b) enzymes (c) Fat (d) Starch

Last Answer : Ans. ((d))

Formation of diploid embryosac from diploid vegetative structure, e.g., nucellus or integument etc., without meiosis is called: (a) Apospory (b) Apomixis (c) Diplospory (d) Adventives polyembryony

Description : Formation of diploid embryosac from diploid vegetative structure, e.g., nucellus or integument etc., without meiosis is called: (a) Apospory (b) Apomixis (c) Diplospory (d) Adventives polyembryony

Last Answer : Ans. ((a))

Formation of 8-nucleate embryosac by pollen grains is also called as

Description : Formation of 8-nucleate embryosac by pollen grains is also called as

Last Answer : Formation of 8-nucleate embryosac by pollen grains is also called as – Nemec phenomenon 

Role of CFC present in atmosphere is to a) Reduction in ozone b) Ozone formation c) Formation of leg haemoglobin a) Enhance chlorophyll formation.

Description : Role of CFC present in atmosphere is to a) Reduction in ozone b) Ozone formation c) Formation of leg haemoglobin a) Enhance chlorophyll formation.

Last Answer : a) Reduction in ozone

Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion

Description : Mycorrhizae is associated with the following a) Formation of root nodules b) Hyphae penetrating the soil c) Found mostly in lower plants d) Soil erosion

Last Answer : a) Formation of root nodules