National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
D

Ans 2:

Class : Class 3
The correct answer is C.

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Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

A

In the given classification chart X could be water as coconut and lotus disperse their seeds through water and Y could be explosion as pea and poppy disperse their seeds through explosion. (i) gets dispersed by wind, so it could be maple or milkweed. (ii) gets dispersed by explosion so it could be cocklebur.


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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 3

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Subject :NSO    Class : Class 5

Ans 1: (Master Answer)

Class : Class 1

C

A lunar eclipse occurs when the Earth comes in between the Sun and the Moon.


Ans 2:

Class : Class 5

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1

A

P is not a natural fibre. so, it can be any synthetic fibre like nylon or rayon. Q can be any natural fibre that is obtained from plant. So, it can be cotton or jute. R an be any natural fibre that is obtained from animal. So, it can be wool or silk.


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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 1

Ans 2:

Class : Class 7
i think it is option A.

Ans 3:

Class : Class 7
i think it is option A.

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Subject :NSO    Class : Class 6

Refer to the given figure and select the correct option regarding its parts labelled P, Q, R, S and T.


AP is the main reproductive organ in plants but in some plants like broccoli and cabbage it gets modified to store food.
BAfter reproduction, P changes to Q which is always edible in all plants.
CT stores food and becomes swollen in plants like turnip, potato and Dahlia.
DFenugreek and lettuce have edible R which are reduced to spines in Opuntia whereas ginger has edible S, which stores water and becomes photosynthetic in some cacti.


Isn't a option correct both d and a are correct right? Please explain

Ans 1: (Master Answer)

Class : Class 1

D

 

In the given figure P is flower, Q is fruit, R is leaf, S is stem and T is root. In cabbage, leaves are modified to store food. Fruit is not always edible in all plants. In some plants, other parts such as roots, stems, etc., are edible. In potato, the stem stores food and becomes swollen.


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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1

D

In the given food chain if the population of frog decreases, then it will lead to an increase in the grasshopper population. As there will be less frogs to feed upon the grasshoppers.


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