Tissue is a group of similar kind of cells specialized to perform a particular function in the body. Therefore presence of tissues in a multicellular organism ensures:
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30%
Faster development
38%
Division of labour
20%
Higher reproductive
12%
Body strength
Xylemis the specializedtissue of the plants that transports water and nutrients from the soil to the upper partts It is composed of four different types of the cells. Which of the following is not one a type of cell found in xylem tissues?
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13%
Trachied
34%
Vessels
35%
Xylem parenchyma
18%
Sieve tube
Epithelial tissue always has an exposed outer surface and an inner surface anchored to connective tissue by a thin, non- cellular structure called the
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24%
Non stratified layer
28%
Basement layer
29%
Basement membrane
19%
Fibroblasts
the tip of the sugarcane plant is removed from the field, even then it keeps on growing in length. It is due to the presence of:
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21%
Cambium
49%
Aprical meristem
21%
Lateral meristem
9%
Intercallary meristem
The most remarkable concept that Dalton’s atomic theory proposed was that of the:
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36%
Atomic mass
25%
Atomic size
19%
Atomic number
20%
All
Compounds composed of metals and non-metals contain
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27%
Non-charged
29%
Charged
37%
Both
7%
None
The word “mole” was introduced around 1896 by:
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13%
Whielum
36%
Dalton
44%
Avagadro
6%
Newton
The relative molecular mass of Na2S2O3.5H2O is
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30%
250 amu
39%
250g
26%
248amu
5%
248g
The proteins and lipids, essential for building the cell membrane, are manufactured by:
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43%
Endoplasmic recticulum
29%
Golgi apperatus
19%
Mitochondria
9%
Lysosome
When the liquid is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay at the top. This principle is used in:
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28%
Centrifugation
40%
Fractional distillation
25%
Evaporation
7%
Tunneling
Which of the following elements is not a metalloid?
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16%
Boron
28%
Silicon
40%
Tungsten
16%
Germanium
The continuous zig-zag movement of colloidal particles in a dispersion medium is called
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24%
Dispersion
32%
Tyndall effect
40%
Browamian movement
5%
None