National Science Olympiad Forum By SOF Olympiad Trainer - Page 307
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Arin from suncity, gurugram
Subject :NSO    Class : Class 5

Ans 1:

Arun from SOT, chennai
Class : Class 5
Dispersal of seed is carried out by wind, water, animals and by explosion. From the given figure it can be inferred that seeds of plants X are dispersed through explosion, e.g., balsam and pea. Seeds of plant Y are dispersed by wind, e.g., dandelion and Hiptage while seeds of plant Z are dispersed by animal, e.g., Xanthium, Urena.

Ans 2:

Monika Bhattacharya from the lexicon international school kalyaninagar, pune
Class : Class 5
thans for explaining

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

Dispersal of seed is carried out by wind, water, animals and by explosion. From the given figure it can be inferred that seeds of plants X are dispersed through explosion, e.g., Balsam and pea. Seeds of plant Y are dispersed by wind, e.g., Dandelion and Hiptage while seeds of plant Z are dispersed by animal, e.g., Xanthium, Urena.


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Aaditya Malhotra from Isaac Newton Global School, Mumbai
Subject :NSO    Class : Class 5

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Shreyan Das from South Point School, Kolkata
Subject :NSO    Class : Class 5
m

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Shreejith from EuroSchool , Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 9
both A and B is correcty

Ans 2:

DEBATREE BANERJEE from ADAMAS WORLD SCHOOL, Kolkata
Class : Class 8
Answer is B

Ans 3:

Mahadevan from KV Rubber Board Kottayam, Kottayam
Class : Class 9
both A and B is correcty

Ans 4:

Amogha from Hindustan international school, Guindy, Chennai
Class : Class 8
Only B is the answer because in picture A it show that K eats N which is not possible.

Ans 5:

Rahul Narayan Sivakumar from St Kabir, VADODARA
Class : Class 8
Both A and B is correct.

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Shreejith from EuroSchool , Bangalore
Subject :NSO    Class : Class 5

Ans 1:

Arnav Raj Sharma from GEMS International School the ultra master mega, Gurgaon
Class : Class 7
master answer is wrong it is (A)

Ans 2:

Arnav Nandan from ST PETERS COLLEGE AGRA, Agra
Class : Class 8
why does SOF developers say their answer master answer

Ans 3: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

Air contains oxygen, which helps in burning. To extinguish a fire it is necessary to cut off the supply of oxygen (air).


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Joe from St.Vincent pallotti, Bangalore
Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

A


Ans 2:

Daksh Kumar from GCIS, Bangalore
Class : Class 7
A

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Rithvik from BVM Global, Chennai
Subject :NSO    Class : Class 4

Ans 1:

Srihitha from HIS, Bangalore
Class : Class 4
A

Ans 2:

Iraj Singh from DPS Megacity, Kolkata
Class : Class 7
The correct answer is option A not any other option.

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Nandini from Ins, Pune
Subject :NSO    Class : Class 7

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Nishchay Gupta from Cambridge Court World School, Jaipur
Subject :NSO    Class : Class 3

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Nishchay Gupta from Cambridge Court World School, Jaipur
Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

D

A-Crow, B-mynah and C-sparrow have three toes pointing forward and one toe pointing backward in each foot whereas D-woodpecker has two toes pointing forward and two toes pointing backward in each foot.


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