National Science Olympiad Forum By SOF Olympiad Trainer - Page 53

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 7

Manita conducted an experiment wherein she took a flowering plant and covered all its flowers with a plastic bag for two weeks. She noticed that during the two weeks’ duration the fruits started to develop from the flowers on the plant. Which of the following could not be the reason for development of fruits?

AThe flowers were already pollinated before Manita enclosed them in the plastic bag.
BThe flowers are bisexual.
CThe anthers and stigmas of the flowers mature at about the same time.
DThe flowers contain only the male reproductive organs.


what's the reason behind???

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 8

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Class : Class 8

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Option D because crushed sugar is smaller and when water is heated, molecules will spread out and sugar will dissolve quicker

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Subject :NSO    Class : Class 5

Jayesh bought three different kinds of fish, P, Q and R. He put fish P population and fish Q population into tank X, and fish P population and fish R population into Y. He recorded the number of each fish in each tank for a week. There were no dead fish in the tank when he checked every day. The graphs below show the results at the end of the week.

Which of the following shows the prey-predator relationship between the three fishes?

AP → Q → R
BQ → P → R
CR → P → Q
DQ → R → P


They should give pictures correctly. Right?

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 4

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