National Science Olympiad Forum By SOF Olympiad Trainer - Page 504

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
But no spider species have 6 legs

Ans 2:

Class : Class 5
confusing question

Ans 3:

Class : Class 5
questio is wrong

Ans 4:

Class : Class 4
Oh my! thanks for solving my problem .

Ans 5:

Class : Class 4
The option D. is wrong. It mentions 3 pairs of wings whereas it should be 2 pairs of wings.

Ans 6:

Class : Class 4
But no spider species have 6 legs

Ans 7:

Class : Class 7
A. P could be cold-blooded animal whereas R could be warm-blooded animal. ----- Frog has backbone, lays eggs and is a cold-blooded animal. So, P can be a Frog. Humans have backbone and hair, and they are warm-blooded. So, R can be a Human Being. So, this statement is Correct.B. Q could be six-legged animal whereas R could be four-legged animal. ----- Spiders have six legs and they lay eggs. So, Q can be a Spider. Horses are four-legged animals. They have backbone and hair. So, R can be a Horse. So, this statement is Correct.C. R could breathe through lungs whereas S could breathe through spiracles. ----- Dogs breathe through lungs, they have backbone and hair. So, R could be a Dog. Cockroaches breathe through spiracles. They have backbone and lay eggs, but they have no hair. So, S can be a Cockroach. So, this statement is Incorrect.D. P could have a pair of wings whereas Q could have two pairs of wings. ----- Birds have a pair of wings. They have backbone and they lay eggs. So, P could be a Bird. Most insects have two pair of wings, and they lay eggs. So, Q could be an Insect. So, this statement is Correct.Hence, the right answer is Option C.

Ans 8:

Class : Class 4
Most off your questions are wrong

Ans 9:

Class : Class 6
Please explain more nicely and Keanna thank you for explaining

Ans 10:

Class : Class 5

Ans 11:

Class : Class 5

Ans 12:

Class : Class 4
Hey, some spider species have six legs, usually out of India. And the whole explanation is wrong.

Ans 13:

Class : Class 5

Ans 14:

Class : Class 4
Keanna you are a copycat

Ans 15:

Class : Class 5
There is written on option D that Q could have three pair of wing but the question is wrong.There should be written two pair instead of three pair.Two pair is written on solution.

Ans 16:

Class : Class 4
Thank you for the explanation

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5
kn

Ans 3:

Class : Class 5
kn

Ans 4:

Class : Class 5
kn

Ans 5:

Class : Class 5
I did it with a guess and got it right somehow!

Ans 6:

Class : Class 5
kn

Ans 7:

Class : Class 4
Let’s study the given food-web carefully:The food-web is starting from P. So, P are plants (Producers). Q, T and U are eating these plants, so they are Herbivores (Primary Consumers). R are eating Q, and V are eating U, so they are Carnivores (Secondary Consumers). S are eating T as well as R

Ans 8:

Class : Class 5
kn

Ans 9:

Class : Class 4

Ans 10:

Class : Class 4
ans is b

Ans 11:

Class : Class 7
OMG!How confusing!How did the others do it!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 12:

Class : Class 4

Ans 13:

Class : Class 5
wth

Ans 14:

Class : Class 5
kn

Ans 15:

Class : Class 4
The ans is A

Ans 16:

Class : Class 2
please explain the reasoning

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
d

Ans 2:

Class : Class 3
is it option C ?

Ans 3:

Class : Class 3
D

Ans 4:

Class : Class 3
Answer can be A also as Q can be duck and P can be penguin and both of them have webbed feet and penguins live in places like Antartica.

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
B

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
SOF, Isnt the answer C?

Ans 2:

Class : Class 6
Ans is C because like humans, plants also sweat. This is called transpiration.

Ans 3:

Class : Class 8

Ans 4:

Class : Class 5
isn't the answer c

Ans 5:

Class : Class 6

Ans 6:

Class : Class 7
C is the answer to this question because the leaves are uncovered

Ans 7:

Class : Class 6
Why will it be D? It should be C, because the Vaseline blocks the stomata of the leaves, and thus blocks the surface for transpiration, so water droplets will not appear on those leaves, but the uncovered leaves were not stained or covered with anything, so the transpiration process in those leaves should stay normal.

Ans 8:

Class : Class 3

Ans 9:

Class : Class 5

Ans 10:

Class : Class 7
Why D?It should be option C .

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
D

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
It should be option A!

Ans 2:

Class : Class 8
Option B -- Golden Crowned Kinglet gets eaten by the snake so the snake is the top consumer and it should be option B.

Ans 3:

Class : Class 9
A substance which constantly gets accumulated in any organism of the food chain gets amplified highest in the topmost predator.This is a rule that can be observed in each and every case of bioamplification in an food web or chain. As the golden crowned kinglet is the topmost predator, option a is correct.

Ans 4:

Class : Class 10
should be option A

Ans 5:

Class : Class 9
it should be option A

Ans 6:

Class : Class 10
Option B - snake. because golden crowned kinglet is sadly eaten by the snake, so snake is the top consumer

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