National Science Olympiad Forum By SOF Olympiad Trainer

User Forum

Subject :NSO    Class : Class 4

Post Your Answer

Subject :NSO    Class : Class 2

Ans 1:

Class : Class 2
D

Ans 2:

Class : Class 2
D

Ans 3:

Class : Class 2

Post Your Answer

Subject :NSO    Class : Class 8

Natasha put a plant cell and an animal cell of similar size in two similar dishes containing the same amount of water overnight. The next day, she observed the cells under the microscope and noticed that the animal cell has burst and the plant cell looked more bloated. She drew the following conclusions:
(i) The animal cell has only a thin layer of cell membrane. When too much water enters it, it bursts.
(ii) Plant cell has cell wall made up of cellulose which is very strong material and prevents the cell from bursting.
(iii) The plant cell contains vacuole and therefore can absorb more water.
(iv) The animal cell does not possess vacuole.
Which of the above given conclusions are correct?

A(i) and (ii)
B(iii) and (iv)
C(i), (ii) and (iii)
DAll of these


Post Your Answer

Subject :NSO    Class : Class 9

Post Your Answer

Subject :NSO    Class : Class 5

Post Your Answer

Subject :NSO    Class : Class 9

Post Your Answer

Subject :NSO    Class : Class 8

Read the given statements and select the correct option.
Statement 1 : It takes a much longer time and covers more distance to stop a moving ship in water than a moving car with same speed on the road.
Statement 2 : The friction on water surface is much less than the solid surface.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true but statement 2 is false.
DStatement 1 is false but statement 2 is true.


Post Your Answer

Subject :NSO    Class : Class 9

Select the correct statement regarding cell wall of plant cells.

APrimary cell wall is chiefly composed of a soluble fibrous polysaccharide called suberin.
BSecondary cell wall is mainly composed of lignin and is deposited on the outer surface of primary wall.
CPits are present in primary walls whereas they are absent in secondary walls.
DThe primary cell walls of adjacent cells are cemented through middle lamella which is composed of calcium and magnesium pectate.


Post Your Answer

Subject :NSO    Class : Class 3

Neetu took equal amount of three types of soil X, Y and Z in three different troughs. Then, she poured 100 mL of water in each trough. The results obtained after some time are shown below.

Now, select the INCORRECT option regarding this.

ASoil X is most suitable for making pots.
BSoil Y is most suitable for making base of an artificial pond.
CPlants like cactus can grow well in soil Z.
DSoil X is suitable for growth of most plants.


Ans 1:

Class : Class 3

Post Your Answer

Subject :NSO    Class : Class 6

Post Your Answer