Sample Test Biology

1
The longest and largest bone in the human body is
  • 1 Spinal Cord .
  • 2 Humerus
  • 3 Fibula
  • 4 Femur
2
The number of Chromosomes in the human gene is
  • 1 23
  • 2 48
  • 3 46
  • 4 24
3
The outermost and innermost wall layers of microsporangium in an anther are respectively
  • 1 Endothecium and tapetum
  • 2 Epidermis and endodermis
  • 3 Epidermis and middle layer
  • 4 Epidermis and tapetum
4
During microsporogenesis, meiosis occurs in
  • 1 Endothecium
  • 2 Microspore mother cells
  • 3 Microspore tetrads
  • 4 Pollen grains
5
The haploid condition is found in
  • 1 Amoeba
  • 2 Bacteria
  • 3 Ovum
  • 4 Zygote
6
How many nucleosomes are found in helical coil of 30 nm chromatin fibre?
  • 1 10
  • 2 12
  • 3 06
  • 4 09
7
In humans, the sex chromosome complement is
  • 1 XX-XY
  • 2 XX-XO
  • 3 ZO-ZZ
  • 4 ZW-ZZ
8
The prokaryotic genetic system contains
  • 1 DNA and histones
  • 2 Either DNA or histones
  • 3 DNA but histones
  • 4 Neither DNA nor histones
9
23. When species are equally spaced throughout a habitat, what kind of dispersion is this?
  • 1 Random
  • 2 Clumped
  • 3 Uniform
  • 4 None of the above
10
10. A cell is placed in an unknown solution. After some time the cell begins to shrink. Which of the following is true of the solution?
  • 1 It had a lower [water] than the cell
  • 2 It had a higher [water] than the cell
  • 3 It is hypotonic
  • 4 It is isotonic

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