National Science Olympiad Forum By SOF Olympiad Trainer - Page 498

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 4
Keanna you are a copycat

Ans 3:

Class : Class 5
questio is wrong

Ans 4:

Class : Class 4
But no spider species have 6 legs

Ans 5:

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

Ans 6:

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 7:

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

Ans 8:

Class : Class 4
Most off your questions are wrong

Ans 9:

Class : Class 5

Ans 10:

Class : Class 4
But no spider species have 6 legs

Ans 11:

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

Ans 12:

Class : Class 5
confusing question

Ans 13:

Class : Class 5

Ans 14:

Class : Class 4
Thank you for the explanation

Ans 15:

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 16:

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

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Subject :NSO    Class : Class 4

Ans 1:

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

Ans 2:

Class : Class 4
ans is b

Ans 3:

Class : Class 4
kn

Ans 4:

Class : Class 4

Ans 5:

Class : Class 4
kn

Ans 6:

Class : Class 2
please explain the reasoning

Ans 7:

Class : Class 4

Ans 8:

Class : Class 4
kn

Ans 9:

Class : Class 4
wth

Ans 10:

Class : Class 4
kn

Ans 11:

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 12:

Class : Class 4
The ans is A

Ans 13:

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

Ans 14:

Class : Class 4
kn

Ans 15:

Class : Class 4
kn

Ans 16:

Class : Class 5

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
D

Ans 2:

Class : Class 3
is it option C ?

Ans 3:

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.

Ans 4:

Class : Class 9
d

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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 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 2:

Class : Class 5
isn't the answer c

Ans 3:

Class : Class 3

Ans 4:

Class : Class 6

Ans 5:

Class : Class 8

Ans 6:

Class : Class 5

Ans 7:

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

Ans 8:

Class : Class 5
SOF, Isnt the answer C?

Ans 9:

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

Ans 10:

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

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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 10
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 8
It should be option A!

Ans 4:

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 5:

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

Ans 6:

Class : Class 9
it should be option A

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