Centrioles are present only in animals. In such a case how the spindle fibres are held in the cell division of plants? -Biology

Centrioles are present only in animals. In such a case how the spindle fibres are held in the cell division of plants? -Biology
by

1 Answer

Answer :

answer:
by

Related questions

Microtubules are absent in (a) mitochondria (b) flagella (c) spindle fibres (d) centrioles.

Description : Microtubules are absent in (a) mitochondria (b) flagella (c) spindle fibres (d) centrioles.

Last Answer : (a) mitochondria

Microtubules are the constituents of (a) centrioles, spindle fibres and chromatin (b) centrosome, nucleosome and centrioles (c) cilia, flagella and peroxisomes (d) spindle fibres, centrioles and cilia.

Description : Microtubules are the constituents of (a) centrioles, spindle fibres and chromatin (b) centrosome, nucleosome and centrioles (c) cilia, flagella and peroxisomes (d) spindle fibres, centrioles and cilia.

Last Answer : (d) spindle fibres, centrioles and cilia

Assertion:- Centrioles are essential for mintenance of confinuity of cells in animals. Reason:- Centrioles give rise to spindle apparatus durring divi

Description : Assertion:- Centrioles are essential for mintenance of confinuity of cells in animals. Reason:- Centrioles give rise to spindle apparatus durring divi

Last Answer : Assertion:- Centrioles are essential for mintenance of confinuity of cells in animals. Reason:- Centrioles ... . If both Assertion & Reason are false.

Assertion :- Kinetochore is essential for cell division. Reason :- Kinetochores serve as the sites of attachment of spindle fibres to the chromosome.

Description : Assertion :- Kinetochore is essential for cell division. Reason :- Kinetochores serve as the sites of attachment of spindle fibres to the chromosome.

Last Answer : Assertion :- Kinetochore is essential for cell division. Reason :- Kinetochores serve as the sites of ... D. If both Assertion & Reason are false.

Why are centrioles present only in animals? -Biology

Description : Why are centrioles present only in animals? -Biology

Last Answer : Explanation: ⇒ Centrioles are necessary for animal cells because they essentially pull the cell into two new cells. In plant cells rather than needing something to pull them apart the cytoplasm will spread and ... cell wall will form in the middle which will lead to the formation of two new cells.

Role of centrioles in cell division. -Biology

Description : Role of centrioles in cell division. -Biology

Last Answer : answer:

Which one of the following statements does NOT apply to bacterial reproduction? a. A fission ring apparatus is present. b. Septum formation occurs. c. A spindle apparatus is used. d. Symmetrical cell division occurs.

Description : Which one of the following statements does NOT apply to bacterial reproduction? a. A fission ring apparatus is present. b. Septum formation occurs. c. A spindle apparatus is used. d. Symmetrical cell division occurs.

Last Answer : c. A spindle apparatus is used.

During the final stage of cell division, the mitotic apparatus disappears, the chromosomes become attenuated, the centrioles duplicate and split, the nuclear membrane becomes reconstituted and the nucleolus reappears. This phase of cell division is known as:

Description : During the final stage of cell division, the mitotic apparatus disappears, the chromosomes become attenuated, the centrioles duplicate and split, the nuclear membrane becomes reconstituted and the nucleolus reappears. This ... as: a) prophase (pron: prO-phase) b) metaphase c) anaphase d) telophase

Last Answer : ANSWER: D -- Telophase

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 ?

What are spindle fibres? -Biology

Description : What are spindle fibres? -Biology

Last Answer : Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during ... division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.

What is the function of the spindle fibres? -Biology

Description : What is the function of the spindle fibres? -Biology

Last Answer : Spindle fibers form a protein structure that divides the genetic material in a cell. The spindle is necessary to equally divide the chromosomes in a parental cell into two daughter cells during ... division: mitosis and meiosis. During mitosis, the spindle fibers are called the mitotic spindle.

What organelles produce spindle fibres? -Biology

Description : What organelles produce spindle fibres? -Biology

Last Answer : Centrioles produce spindle fibers in animal cells. These spindle fibers are active during mitosis when the DNA has replicated and the chromosomes are pulled apart during anaphase. Plants cells do not have centrioles but they still undergo mitosis.

Assertion :- Each chromatid is attached with two spindle fibres during S-phase :- Reason :- During Anaphse-I each chromosome is found in bivalent form

Description : Assertion :- Each chromatid is attached with two spindle fibres during S-phase :- Reason :- During Anaphse-I each chromosome is found in bivalent form

Last Answer : Assertion :- Each chromatid is attached with two spindle fibres during S-phase :- Reason :- During ... . D. If both Assertion & Reason are false.

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

Part of Chromosome which joins with spindle fibres is -

Description : Part of Chromosome which joins with spindle fibres is -

Last Answer : Part of Chromosome which joins with spindle fibres is - A. Chromatid B. Chromonema C. Chromomere D. Centromere

Stretch reflex: a. is a monosynaptic reflex with a response time of 1 msec b. originates in the muscle spindle which sends off impulses in type Ia nerve fibres c. is intensified by impulses in the gamma efferent fibres d. all above

Description : Stretch reflex: a. is a monosynaptic reflex with a response time of 1 msec b. originates in the muscle spindle which sends off impulses in type Ia nerve fibres c. is intensified by impulses in the gamma efferent fibres d. all above

Last Answer : all above

Synapsis occurs between (a) mRNA and ribosomes (b) spindle fibres and centromere (c) two homologous chromosomes (d) a male and a female gamete.

Description : Synapsis occurs between (a) mRNA and ribosomes (b) spindle fibres and centromere (c) two homologous chromosomes (d) a male and a female gamete.

Last Answer : (c) two homologous chromosomes

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

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

Which of the following is not a characteristic feature during mitosis in somatic cells? (a) Chromosome movement (b) Synapsis (c) Spindle fibres (d) Disappearance of nucleolus

Description : Which of the following is not a characteristic feature during mitosis in somatic cells? (a) Chromosome movement (b) Synapsis (c) Spindle fibres (d) Disappearance of nucleolus

Last Answer : (b) Synapsis

Spindle fibres attach on to (a) centromere of the chromosome (b) kinetosome of the chromosome (c) telomere of the chromosome (d) kinetochore of the chromosome.

Description : Spindle fibres attach on to (a) centromere of the chromosome (b) kinetosome of the chromosome (c) telomere of the chromosome (d) kinetochore of the chromosome.

Last Answer : (d) kinetochore of the chromosome.

Characteristics of smooth muscle fibres are (a) spindle-shaped, unbranched, nonstriated, uninucleate and involuntary (b) spindle-shaped, unbranched, unstriped, multinucleate and involuntary (c) cylindrical, unbranched, unstriped, multinucleate and involuntary (d) cylindrical, unbranched, striated, multinucleate and voluntary.

Description : Characteristics of smooth muscle fibres are (a) spindle-shaped, unbranched, nonstriated, uninucleate and involuntary (b) spindle-shaped, unbranched, unstriped, multinucleate and involuntary (c ... , multinucleate and involuntary (d) cylindrical, unbranched, striated, multinucleate and voluntary.

Last Answer : (a) spindle-shaped, unbranched, nonstriated, uninucleate and involuntary

During cell division, spindle fibers attach to which part of chromosome :-

Description : During cell division, spindle fibers attach to which part of chromosome :-

Last Answer : During cell division, spindle fibers attach to which part of chromosome :- A. Primary constriction B. Sec. Constriction C. Chromomere D. Chromatid

How one division of the nucleus a new spindle forms around each group of chromosomes?

Description : How one division of the nucleus a new spindle forms around each group of chromosomes?

Last Answer : Need answer

Assertion:- All eukaryotic cells are not identical. Reason:- Centrioles are found in animal cells, absent in almost all plant cell.

Description : Assertion:- All eukaryotic cells are not identical. Reason:- Centrioles are found in animal cells, absent in almost all plant cell.

Last Answer : Assertion:- All eukaryotic cells are not identical. Reason:- Centrioles are found in animal cells, absent ... D. If both Assertion & Reason are false.

What are the functions of the Centrioles? -Biology

Description : What are the functions of the Centrioles? -Biology

Last Answer : Centrioles are paired barrel-shaped organelles located in the cytoplasm of animal cells near the nuclear envelope. Centrioles play a role in organizing microtubules that serve as the cell's skeletal system. They help determine the locations of the nucleus and other organelles within the cell.

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.

Description : 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.

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.

Description : 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.

Last Answer : (4) It is a site for active ribosomal RNA synthesis.

What is the function of the centrioles?

Description : What is the function of the centrioles?

Last Answer : A: Centrioles are cellular organelles involved in cell division and the organization of the cytoskeleton.

What is the function of the centrioles?

Description : What is the function of the centrioles?

Last Answer : A: The centrioles are cellular organelles involved in cell division, playing a role in the formation of the spindle fibers that pull the chromosomes apart during mitosis and meiosis.

What is the function of the centrioles?

Description : What is the function of the centrioles?

Last Answer : A: The centrioles are involved in the formation of the spindle fibers during cell division.

Where do centrioles live ?

Description : Where do centrioles live ?

Last Answer : The centriole is located near the nucleus of the cell.

Find incorrect statement with regard to centrosome and centrioles :- (a) Centrosomes are surrounded by amorphous pericentriolar material (b) In centro

Description : Find incorrect statement with regard to centrosome and centrioles :- (a) Centrosomes are surrounded by amorphous pericentriolar material (b) In centro

Last Answer : Find incorrect statement with regard to centrosome and centrioles :- (a) Centrosomes are surrounded by amorphous ... b C. b, c D. All are correct

What stage centrioles separate?

Description : What stage centrioles separate?

Last Answer : Need answer

What are analogies for centrioles ?

Description : What are analogies for centrioles ?

Last Answer : A Centriole is like a straw because they both are tubesthat let things get from one end to the other end. The centriole has a round look to it because it is made from nine triplets of microtubules that make a straw-like (as said above) look.

Which one of the following cellular parts is correctly described? (a) Thylakoids - flattened membranous sacs forming the grana of chloroplasts (b) Centrioles - sites for active RNA synthesis (c) Ribosomes - those on chloroplasts are larger (80S) while those in the cytoplasm are smaller (70S) (d) Lysosomes - optimally active at a pH of about 8.5

Description : Which one of the following cellular parts is correctly described? (a) Thylakoids - flattened membranous sacs forming the grana of chloroplasts (b) Centrioles - sites for active RNA synthesis (c) Ribosomes - ... cytoplasm are smaller (70S) (d) Lysosomes - optimally active at a pH of about 8.5

Last Answer : (a) Thylakoids - flattened membranous sacs forming the grana of chloroplasts

Which of the following is NOT a membranous organelle? (A) Lysosomes (B) Peroxisomes (C) Centrioles (D) Mitochondria

Description : Which of the following is NOT a membranous organelle? (A) Lysosomes (B) Peroxisomes (C) Centrioles (D) Mitochondria

Last Answer : (C) Centrioles

Identify the two components of Phloem tissue that help in transportation of food in plants (a) Phloem parenchyma & sieve tubes (b) Sieve tubes & companion cell. (c) Phloem parenchyma & companion cell. (d) Phloem fibres and sieve tubes

Description : Identify the two components of Phloem tissue that help in transportation of food in plants (a) Phloem parenchyma & sieve tubes (b) Sieve tubes & companion cell. (c) Phloem parenchyma & companion cell. (d) Phloem fibres and sieve tubes

Last Answer : (b) Sieve tubes & companion cell.

Assertion :- In higher plants, the mitosis is termed as anastral mitosis. Reason : In higher plants, mitosis takes place without spindle fibers.

Description : Assertion :- In higher plants, the mitosis is termed as anastral mitosis. Reason : In higher plants, mitosis takes place without spindle fibers.

Last Answer : Assertion :- In higher plants, the mitosis is termed as anastral mitosis. Reason : In higher plants, ... . D. If both Assertion & Reason are false.

What phase is when spindle fibers disappear new nucleus forms at each end of the cell?

Description : What phase is when spindle fibers disappear new nucleus forms at each end of the cell?

Last Answer : Need answer

Which of the following structures will not be common to mitotic cell of a higher plant?(a) Centriole (b) Spindle fibre (c) Cell plate (d) Centromere

Description : Which of the following structures will not be common to mitotic cell of a higher plant? (a) Centriole (b) Spindle fibre (c) Cell plate (d) Centromere

Last Answer : (a) Centriole

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 statement is NOT true? (a) Most of the plant tissues are supportive type. (b) Tissues ensure division of labour. (c) Sedantry existence contribute to the organ system design in animals. (d) Organ systems are far more complex in animals than in plants.

Description : Which of the following statement is NOT true? (a) Most of the plant tissues are supportive type. (b) Tissues ensure division of labour. (c) Sedantry existence contribute to the organ system design in animals. (d) Organ systems are far more complex in animals than in plants.

Last Answer : (c) Sedantry existence contribute to the organ system design in animals.

In the case of quasi permanent Government Servants who wish to revert to parent department /Office within a period of two years then the government servant will be appointed to the post of -------------- a. the post held by him prior to his joining the new department b the present post he occupied c. None of these

Description : In the case of quasi permanent Government Servants who wish to revert to parent department /Office within a period of two years then the government servant will be appointed to the post of ---------- ... him prior to his joining the new department b the present post he occupied c. None of these

Last Answer : a. the post held by him prior to his joining the new department

In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres. (A) Viscose rayon (B) Acrylic (C) Polyvinyl acetate (D) Saturated polyeste

Description : In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the __________ fibres. (A) Viscose rayon (B) Acrylic (C) Polyvinyl acetate (D) Saturated polyeste

Last Answer : (D) Saturated polyeste

Melt spinning of polymers involves the forcing of polymer melt through spinnerates (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres. (A) Acrylic (B) Polyester (C) Nylon 6:6 (D) Polypropylene

Description : Melt spinning of polymers involves the forcing of polymer melt through spinnerates (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter ... the __________ fibres. (A) Acrylic (B) Polyester (C) Nylon 6:6 (D) Polypropylene

Last Answer : (A) Acrylic

In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres. (A) Polythene (B) PVC (C) Rayon (D) Polyvinyl acetate

Description : In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament ... is used for __________ fibres. (A) Polythene (B) PVC (C) Rayon (D) Polyvinyl acetate

Last Answer : (B) PVC

Interchain forces are the weakest in case of (A) Plastics (B) Fibres (C) Elastomers (D) Both rubber & elastomers

Description : Interchain forces are the weakest in case of (A) Plastics (B) Fibres (C) Elastomers (D) Both rubber & elastomers

Last Answer : (D) Both rubber & elastomers

Yellow fibres are present in

Description : Yellow fibres are present in

Last Answer : Yellow fibres are present in A. Arrange in bundles B. Singly and branched C. Singly and undranched D. Unbranched & arrange in bundles

C fibres transmitting pain sensation a. are present in less numbers than A fibres in sensory nerves b. conduct at an average velocity of 2 metres/secon c. convey temperature sensation d. terminate in laminae 2 and 3 of the dorsal horn

Description : C fibres transmitting pain sensation a. are present in less numbers than A fibres in sensory nerves b. conduct at an average velocity of 2 metres/secon c. convey temperature sensation d. terminate in laminae 2 and 3 of the dorsal horn

Last Answer : convey temperature sensation