National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B

Ans 2:

Class : Class 3
240

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Subject :NSO    Class : Class 2

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
tadpole

Ans 2:

Class : Class 4
Tadpole

Ans 3:

Class : Class 4
Tadpole

Ans 4:

Class : Class 4
Question is WRONG

Ans 5:

Class : Class 4
answer is not tadpole because tadpole has 5 especially 5 stages it is the first amphibian or animal i know who has 5 stages in the life cycle that are 1st egg 2nd embryo 3rd tadpole 4th froglet and last (5th also) is adult frog I have already reportedan errror the answer is very very wrong

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 7

The following investigation was carried out using flower buds growing on three plants of the same species :
Plant 1 – The anthers were carefully removed and the buds left open to the air.
Plant 2 – The anthers were left untouched and a paper bag was tied tightly around each bud.
Plant 3 – The anthers were carefully removed and a paper bag was tied tightly around each bud.
All flowers were opened normally but only those on plant 1 produced seeds.
What can be inferred from it?

A Only cross-pollination can take place in this plant species.
B Only wind-pollination can take place in this plant species.
C Only insect-pollination can take place in this plant species.
D Both self and cross-pollination can take place in this plant species.


Ans 1:

Class : Class 7
There used to be anthers so it is D

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 2

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 1

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
thank you for explanation : |

Ans 2:

Class : Class 7
The correct answer is A) P as Pulmonary Artery has the least concentration of oxygen.

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