National Science Olympiad Forum By SOF Olympiad Trainer - Page 498
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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

Ans 1:

Aarav sugla from Niraj International School , Secunderabad
Class : Class 5

Ans 2:

Advait Kumar Mangalik from The S D Public School, Muzaffarnagar
Class : Class 4
Keanna you are a copycat

Ans 3:

aurik mittal from mayor world school, jalandhar
Class : Class 5
questio is wrong

Ans 4:

Bharat Aggarwal from Kalyani school, Pune1
Class : Class 4
But no spider species have 6 legs

Ans 5:

Archita Moi from The Newtown School, Kolkata
Class : Class 4
Oh my! thanks for solving my problem .

Ans 6:

Shrihan Koley from Radiant International School , Patna
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:

Saarth Agrawal from Podar International School , Mumbai
Class : Class 6
Please explain more nicely and Keanna thank you for explaining

Ans 8:

kartikeya nangrani from the kalyani school, pune
Class : Class 4
Most off your questions are wrong

Ans 9:

lavanya from bcm chd road, Ludhiana
Class : Class 5

Ans 10:

Bharat Aggarwal from Kalyani school, Pune1
Class : Class 4
But no spider species have 6 legs

Ans 11:

Aadya Kawale from Podar International ICSE , Dombivli East
Class : Class 4
Hey, some spider species have six legs, usually out of India. And the whole explanation is wrong.

Ans 12:

KANAK PRASAD from Kendriya Vidhyalaya IIT Tirupati, Tirupati
Class : Class 5
confusing question

Ans 13:

Arjun120914 from St. Andrews world school, Ghaziabad
Class : Class 5

Ans 14:

Om Adhatrao from Orchids International School, Thane
Class : Class 4
Thank you for the explanation

Ans 15:

Keanna from APG, MUMBAI
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:

Nirvaan Jain from Anand Niketan Satellite Campus, Ahmedabad
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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Debarpan Das from Delhi Public School , Durgapur
Subject :NSO    Class : Class 4

Ans 1:

Deveshi Sachdev from venkateshwar international school, New Delhi
Class : Class 5
I did it with a guess and got it right somehow!

Ans 2:

Krishika Madan Shanmugam from National Public School, Bangalore
Class : Class 4
ans is b

Ans 3:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4
kn

Ans 4:

Vansika Jasrapuria from Chatrabhuj Narsee School, Mumbai
Class : Class 4

Ans 5:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4
kn

Ans 6:

Tamojeet Sanyal from Don Bosco, Kolkata
Class : Class 2
please explain the reasoning

Ans 7:

Harsh Mahyavanshi from Lokhandwala Foundation School, Mumbai
Class : Class 4

Ans 8:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4
kn

Ans 9:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4
wth

Ans 10:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4
kn

Ans 11:

Aadya Kawale from Podar International ICSE , Dombivli East
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:

Aarvika Dansana from Mayoor School Noida, Gautam Buddha Nagar
Class : Class 4
The ans is A

Ans 13:

Mohhika Sharma from Delhi Public School Greater Noida, Greater Noida
Class : Class 7
OMG!How confusing!How did the others do it!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 14:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4
kn

Ans 15:

AAYANSH from SMT.L.B.JOSHI ENGLISH HIGH SCHOOL, Thane
Class : Class 4
kn

Ans 16:

Rakshit Singh from DLF Public School, Ghaziabad
Class : Class 5

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Advait talnikar from Dhruv Global School, Sangamner
Subject :NSO    Class : Class 6

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Akshara Singh Virk from DPS , Sec 47, Gurgaon
Subject :NSO    Class : Class 3

Ans 1:

ANSHUL GAJJAR from PODAR INTERNATIONAL SCHOOL, AHMEDABAD
Class : Class 3
D

Ans 2:

Gunnika from MVN, Faridabad
Class : Class 3
is it option C ?

Ans 3:

Nishant Hazarika from Air Force School, Dibrugarh
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:

Aneesh Balaji from BVBARR school, Hyderabad
Class : Class 9
d

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Mani Gupta from Carmel Convent School, Faridabad
Subject :NSO    Class : Class 8

Ans 1:

Ani from Sav, Kolkata
Class : Class 9
B

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Shruti Rajshree from NPS Indiranagar, Bengaluru
Subject :NSO    Class : Class 5

Ans 1:

Ayushree Barman from Sri Sri Academy, Kolkata
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:

Shreyan from Delhi Public School Bangalore East, Bangalore
Class : Class 5
isn't the answer c

Ans 3:

Navya GUPTA from dps noida, Noida
Class : Class 3

Ans 4:

Kanishk Mukherjee from BDM International, Kolkata
Class : Class 6

Ans 5:

munish jindal from APJ school, Jalandhar
Class : Class 8

Ans 6:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5

Ans 7:

Pratham Dave from GNS, Bangalore
Class : Class 7
Why D?It should be option C .

Ans 8:

CHIRAG KHORIA from EVERGREEN PUBLIC SCHOOL, MAYNAGURI
Class : Class 5
SOF, Isnt the answer C?

Ans 9:

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

Ans 10:

Pratham Dave from GNS, Bangalore
Class : Class 7
C is the answer to this question because the leaves are uncovered

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Anshuman D from MVM, Hyderabad
Subject :NSO    Class : Class 7

Ans 1:

Pranathi from GIIS, Kuala Lumpur
Class : Class 7
D

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subhang sarkar from Aditya Academy, Kolkata
Subject :NSO    Class : Class 3

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Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Subject :NSO    Class : Class 7

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Sambhavi nayak from DAV Public school, Cuttack
Subject :NSO    Class : Class 8

Ans 1:

Kushagra Kishore from Chrysalis High, Bengaluru
Class : Class 10
should be option A

Ans 2:

Student from School, City
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:

ishaan parikh from ahmedabad international school, ahmedabad
Class : Class 8
It should be option A!

Ans 4:

Sriyansh from Surabhi , Hosapete
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:

Aryan Keswani from Delhi Public School, Mathura Road, New Delhi
Class : Class 10
Option B - snake. because golden crowned kinglet is sadly eaten by the snake, so snake is the top consumer

Ans 6:

Bhumi Chheda from SVKM J V Parekh International School, Mumbai
Class : Class 9
it should be option A

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