The second meiotic division leads to
 

In meiosis, chromosome number becomes
 a) Half of its parent chromosome
 b) Same as that of parent chromosome
 c) One fourth of its parent chromosome
 d) None of the above

Consider the following statements about plant cytokinesis
I. It usually occurs by cell plate method
II. The spindle usually persists during cytokinesis
III. Cell plate grows centrifugally
Which of the statements given above are correct?
 a) I and II       b) I and III         c)    II and III     d) I, II and III

Which type of cell division helps in regeneration of cells?
 a) Mitosis      b) Amitosis        c)    Meiosis       d) Karyokinesis

Which of the following statement(s) is/are not correct about meiosis?
I. Meiosis involves pairing of homologous chromosomes and recombination between them
II. Two diploid cells are formed at the end of meiosis-II
III. Meiosis involves two sequential cycles of nuclear and cell division called meiosis-I and meiosis-II, but only a single cycle of DNA replication
IV. Meiosis-I is initiated after the parental chromosome replication which produce identical sister chromatids at the S-phase
The correct option is
 a) I and III        b)    II only         c)    II and III     d) I, II, III and IV

During meiosis, the alleles of the parental pair separate or segregated from each other. How many allele(s) is/are then transmitted to a gamete?
a) Four         b)    Two      c) Six    d) One

The two chromatids of a metaphase chromosome represent
 a) Replicated chromosomes to be separated at anaphase
 b) Homologous chromosomes of a diploid set
 c) Non-homologous chromosomes joined at the centromere
 d) Maternal and paternal chromosomes joined at the centromere

In the process of mitotic division during interphase, chromosome material remains in the form of very loosely coiled threads called
 a) Chromosome         b)    Chromatin    c) Chromatid       d) Microtubules

Which is synthesized in G_1-phase?
 a) DNA polymerase    b) Histones    c) Nucleolar DNA    d) Tubulin protein

Which of the following occurs more than one and less than five in a chromosome?
 a) Chromatid        b)    Chromomere      c) Centromere           d) Telomere

Longest phase of meiosis, is
 a) Prophase-I         b)    Prophase-II    c) Anaphase-I        d) Metaphase-II

 Which of the following statements (events) is/are true for mitotic telophase?
 a) Nucleolus, GB and ER form
 b) NM assembles around each chromosomes clusters
 c) Arrival of chromosomes cluster at opposite poles and loss of their identity as discrete elements
 d) All of the above

Identify A-C in the given statements, and choose the correct option
I. Spindle microtubules that extend from the two poles of a dividing cell are called …A…
II. A centromere connects two identical copies of a single chromosomes. These two copies are called …B…
III. In ‘X’ phase, the paired chromosomes separate and begin moving to opposite ends of the cell. This ‘X’ is called …C…
 a) A-kinetochore fibres; B-chromatids; C-metaphase
 b) A-polar fibres; B-homologous chromosomes; C-Prophase
 c) A-polar fibres; B-sister chromatids; C-anaphase
 d) A-kinetochore fibres; B-asters; C-anaphase

The interphase is divided into three main phases. There phases are
 a) G_1-phase, M-phase and G_2-phase
 b) M-phase, S-phase and divisional phase
 c) Gap 1 phase, synthesis phase and gap 2 phase
 d) M-phase G_2-phase and divisional phase

In which of the following stages of the cell cycle chromosome number becomes half?
 a) Metaphase-I         b)    Anaphase-I    c) Prophase-I      d) Metaphase-II

Mitosis is characterized by
 a) Reduction division        b)    Equal division
 c) Both (a) and (b)        d)    Absence of spindle formation

Choose the correct sequence of two main events in mitosis
 a) Karyokinesis followed by cytokinesis
 b) Cytokinesis followed by karyokinesis
 c) Karyokinesis followed by separation of the daughter cells
 d) Cytokinesis followed by separation of the daughter cells

What is the correct sequence of the steps given here?
 Also work out the process depicted in the steps?
 Homologous chromosomes move toward opposite poles of the cell; chromatids do not separate.
 Chromosomes gather together at the two poles of the cell and the nuclear membrances reform.
 Homologous chromosomes pair and exchanges segments.
 Homologous chromosomes align on a central plate.
 The haploid cells separate completely.
 a) The correct sequence is III→IV→I→II→V and the process is meiosis-I
 b) The correct sequence is II→I→V→IV→ III and the process is mitosis
 c) The correct sequence is IV→I→III→II→V and the process is meiosis-I
 d) The correct sequence is II→V→IV→I→ III and the process is mitosis

What is the nature of cells formed at the end of meiosis-II?
 a) Haploid    b) Diploid    c) Tetrad    d) None of these

The major event that occurs during the anaphase of mitosis, which brings about the equal distribution of chromosomes is
 a) Replication of the genetic material
 b) Splitting of the chromatids
 c) Splitting of the centromeres
 d) Condensation of the chromatin

Cleavage is a unique form of mitotic cell division in which
 a) There is no growth of cells
 b) The nucleus does not participate
 c) No spindle developers to guide the cells
 d) The plasma membranes of daughter cells do not separate

In plant cell has 12 chromosomes at the end of mitosis. How many chromosomes would it have in the G_2-phase of its next cell cycle?
a) 6      b) 8         c)    12    d) 24

Meiosis occurs in organism during
 a) Vegetative reproduction    b) Sexual reproduction
 c) Both (a) and (b)            d) None of these

Plants adapted to low light intensity have
 a) Larger photosynthetic unit size than the sun plants
 b) Higher rate of carbon dioxide fixation than the sun plants
 c) More extended root system
 d) Leaves modified to spines