Entry Test Biolgy Class 11Th 12Th Chapter 04

CAPTER 4

Medical Entry Test Important MCQS 

Choose the most appropriate answer:
1.Which of these established that the units of inheritance are located on thechromosome?
a. Sutton
b. Waldeyer
c. Watson and Crick
d. Strickberger
Correct Ans. (a)

2.Which of the following determines the shape of the chromosomes?
a. chromatids
b. chromatin material
c. shape of the centromeres
d. position of the centromere
Correct ans. (d)

3.The morphology of the chromosome is best studied during
a. interphase
b. prophase
c. telophase
d. metaphase
Correct ans. (d)

4.Telocentric chromosomes have centromere located at
a. one end
b. both ends
c. center
d. one side
Correct Ans. (a)

5.Which of these chromosomes have centromere located at one end?
a. acrocentric
b. Telocentric
c. Metacentric
d. Submetacentric
Correct ans. (b)

6.Which of these chromosomes have a very short arm?
a. Telocentric
b. Metacentric
c. Acrocentric
d. Submetacentric
Correct Ans. (c)

7.Which of the following chromosomes have arms of unequal length?
a. Telocentric
b. Metacentric
c. Acrocentric
d. Submetacentric
Correct Ans. (d)

8.Which of the following types of chromosomes have arms of equal length?
a. Metacentric
b. Submetacentric
c. Acrocentric
d. Telocentric
Correct Ans. (a)

9.The total chromosome complement of a cell is called
a. Karyosome
b. Karyokinesis
c. Karyogamy
d. Karyotype
Correct Ans. (d)

10.DNA and histones together form a structure called
a. Centromeres
b. Nucleosome
c. Nucleoplasm
d. Centriole
Correct Ans. (b)

11.Which of the following number of molecules of various types of histones form Nucleosome?
a. 8
b. 10
c. 16
d. 20
Correct Ans. (a)

12.Which of these studied mitosis in plant cells?
a. Strassburger
b. Flemming
c. Sutton
d. Waldeyer
Correct Ans. (a)

13.Which of these studied mitosis in animal cells?
a. Strassburger
b. Flemming
c. Sutton
d. Waldeyer
Correct Ans. (b)

14.During mitosis the process of cytoplasmic division is called
a. Cytomeiosis
b. Cytoplasmosis
c. Cytokinesis
d. Cytomitosis
Correct Ans. (c)

15.DNA replication occurs in which phase of the cell cycle?
a. prophase
b. interphase
c. metaphase
d. Telophase
Correct Ans. (b)

16.Which of the following is part of mitosis in cells of seed plants?a. Centrioles
b. Asters
c. Spindles
d. Cleavage furrows
Correct Ans. (c)

17.In plants, meiosis occurs during the formation of:
a. gametes b. seeds
c. spores
d. zygote
Correct Ans. (c)

18.The prophase I of Meiosis completes in
a. Two stages
b. Three stages
c. Four stages
d. Five stagesCorrect Ans. (d)

19.The number of chromosomes in a fertilized egg is:
a. half as many as in unfertilized egg
b. the same as in sperm
c. twice the number as in a sperm
d. twice the number as in somatic cell
Correct Ans. (d)

20.All the somatic cells of a diploid organism originate from a single cell called
a. gamete
b. autosome
c. spore
d. zygote
Correct Ans. (d)

21.If at the end of meiosis, each of the four daughter cells has four chromosomes,how many chromosomes were in the mother cell?
a. 2 b. 4
c. 8
d. 16
Correct ans. (c)

22.At what phase of meiosis are homologous chromosomes separated?
a. Prophase I
b. Anaphase I
c. Prophase II
d. Anaphase II
Correct Ans. (b)

23.The process by which homologous chromosomes being to pair with each other iscalled.
a. chiasma
b. interkinesis
c. crossing over
d. synapsis
Correct Ans. (d)

24.The points at which crossing over has taken place between homologouschromosomes are called
a. Chiasmata b. Centromeres
c. Synapsis
d. Centrosomes
Correct Ans. (a)

25.Crossing over occurs during
a. leptotene
b. zygotene
c. pachytene
d. diplotene
Correct Ans.(c)

26.During what phase of meiosis tetrads are form?
a. prophase I
b. prophase II
c. metaphase I
d. metaphase II
Correct Ans. (a)

27.During what phase of meiosis the nuclear envelop breaks down?
a. prophase I
b. metaphase
c. anaphase I
d. telophase I
Correct Ans. (b)


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