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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1 : Clothes made from natural fibres are stronger than the clothes made from synthetic fibres.
Statement 2 : Nylon, rayon and silk are common synthetic fibres.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true but statement 2 is false.
DBoth statements 1 and 2 are false.


But natural fires and clothes made from them are stronger

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Subject :NSO    Class : Class 8

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Class : Class 9
It cannot "measure" the current of a charged object. It can only detect whether a object is charged

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

Study the given flow chart.

Identify P-S and select the incorrect statement.

A P could be unicellular organism in which locomotion takes place by means of pseudopodia.
B Q could be organism which possesses fins whereas S could be organism which possess feathers.
C R has three stage life cycle whereas S may have four stage life cycle.
D In organism S sex chromosome of male parent might determine the sex of the offspring.


Ans 1:

Class : Class 9
Which animal have four life stages

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Subject :NSO    Class : Class 7

Refer to the given dichotomous key and select the correct statement.
(i) (A) Single parent is involved - Go to (ii)
(B) Two parents are involved - Go to (v)
(ii) (A) New plants are produced by natural method - Go to (iii)
(B) New plants are produced by artificial method - Go to (iv)
(iii) (A) Plant produced through stem - P
(B) Plant produced through root - Q
(iv) (A) Plant produced from unorganised cell mass - R
(B) Plant produced by bending young branch towards the ground and covered with moist soil - S
(v) (A) Plant produced when pollen grains are transferred to the stigma of same flower of the same plant - T
(B) Plant produced on transferring pollen grains to the stigma of different flower - U

A P could be sweet potato while S could be Asparagus.
B R could be Asparagus which grows in suitable nutrient medium.
C T could be papaya while U could be Hibiscus.
D Q could be potato which possesses scars or depressions called eyes.


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