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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B . (2.1cm)

Ans 2:

Class : Class 3
B . (2.1cm)

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
no repetition of same pairs ( like AB and BA )

Ans 2:

Class : Class 4
C 15

Ans 3:

Class : Class 4
A 30

Ans 4:

Class : Class 4
Answer is A

Ans 5:

Class : Class 4
A 30

Ans 6:

Class : Class 4

Ans 7:

Class : Class 5
A

Ans 8:

Class : Class 4
Answer should be A as 6 x 5 =30

Ans 9:

Class : Class 5
a

Ans 10:

Class : Class 4
the solution is correct as this is not combination this is just simple paring that is converted to handshakes . answer is C

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 8

In which of the following agricultural setups, the nutrient needs of one crop are fulfilled by the other crop?


A
B
C
D


here,groundnut soyabeans and wheat all are legumes which have nodules at their roots for rhizobium bacteria, which fixes atmospheric N2 --->nitrates.so, only rice crop's requiremnts need to be fulffilled by any of the other crops.So,the correct diagram must show rice and any one other crop(because the question reads "other crop" not crops)So ideally,D should be the correct option. How is C right boggles me.

Ans 1:

Class : Class 8
please explain

Ans 2:

Class : Class 8

Ans 3:

Class : Class 4
It should be a

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Subject :NSO    Class : Class 6

Read the following statements (i) - (v), each with one or two blanks.

(i) (A) have liquid skeletons.
(ii) The last (B) pairs of ribcage bones that are not joined to the breast bone are called (C).
(iii) The longest bone of human body is (D).
(iv) (E) is strong, flexible band that holds bones together at the joints.
(v) (F) is a smooth elastic tissue that covers and protects the ends of long bones at the joints.
Which of the following options correctly fills any two of these blanks?

A (A)-Earthworm, (D)-Humerus
B (E)-Ligament, (f)-Cartilage
C (B)-Four, (C)-Floating ribs
D (E)-Tendon, (f)-Ligament


B

Ans 1:

Class : Class 6

Ans 2:

Class : Class 6
The correct answer is option B . Clearly , the ligaments hold the bones together at joints and cartilage acts as a cushion that acts as a shock absorbent .

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Subject :NSO    Class : Class 7

The polar bear has some adaptive features to live in extremely cold climate of polar regions.
Some are given in the box.

Select the correct adaptation values of the features P, Q and R from the following:
(i) Helps in catching the prey
(ii) Helps in high speed running
(iii) Insulates the body
(iv) Makes it a good swimmer
(v) Reduces heat loss
(vi) Makes it walk on snow easily
(vii) Sensitive hearing

A P → (v), Q → (vii), R → (ii)
B P → (iv), Q → (iii), R → (i)
C P → (iii), Q → (v), R → (vi)
D P → (iii), Q → (i), R → (ii)


I have a question, how can small ears help in reducing heat loss?

Ans 1:

Class : Class 8
Big ears will have a comparatively more blood supply. So it will have more heat loss also.

Ans 2:

Class : Class 7
Small ears have less blood vessels. Blood vessels help radiate heat from the body. So less blood vessels in the small ears help reduce heat loss.

Ans 3:

Class : Class 7
P-(iii),Q-(v),R-(vi)

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
Option A is the correct option.

Ans 2:

Class : Class 7
The answer is option A, I think

Ans 3:

Class : Class 8
A OPTION

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7
Answer is B

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