Select the correct option with respect to mitosis.
1. Chromatids start moving towards opposite poles in telophase
2. Golgi complex and endoplasmic reticulum are still visible at the end of prophase
3. Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase
4. Chromatids separate but remains in the centre of the cell in anaphase
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGiven below is a schematic break-up of the phases/stages of the cell cycle
Which one of the following is the correct indication of the stage/phase in the cell cycle?
1. B-Metaphase
2. C-Karyokinesis
3. D-Synthesis phase
4. A-Cytokinesis
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe drug colchicines, used to obtain polyploidy cells, acts on the cytoskeletal structures of
the plant cells called
1. microtubules
2. actin filaments
3. intermediate filaments
4. all of the above.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAstral rays arise from
1. centriole
2. cytoplasm
3. chromatid
4. centromere.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyNumber of mitotic division required in a cell of root tip for formation of 128 cells is
1. 12
2. 3
3. 7
4. 6
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBarr body is found in the cytoplasm during
1. interphase in cell of female mammal.
2. interphase in cell of male mammal.
3. prophase in cell of female mammal.
4. prophase in cell of male mammal.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen synapsis is complete all along the chromosome, the cell is said to have entered a stage called
(1) Zygotene
(2) pachytene
(3) diplotene
(4) diakinesis.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMany cells function properly and divide mitotically even though they do not have
(1) Plasma membrane
(2) Cytoskeleton
(3) Mitochondria
(4) Plastids
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not a characteristic of meiosis?
(1) It involves two stages of DNA replication one before meiosis-I and another before meiosis-II
(2) It involves recombination and crossing over
(3) Sister chromatids separate during anaphase- II
(4) Nuclear membrane disappears during prophase.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMicrotubule depolymerizing drug such as colchicine is expected to
(1) inhibit spindle formation during mitosis
(2) inhibit cytokinesis
(3) allow mitosis beyond metaphase
(4) induce formation of multiple contractile
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology