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Habitat

Question 10Mi...

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Question 10
Migratory birds fly to far away areas during a particular time of the year. Which of the following conditions present in their habitat during that time are responsible for this behaviour?

(i) Unavailability of food
(ii) Extreme weather conditions
(iii) Over crowding
(iv) Lack of nesting areas

(a) ii & iii
(b) i & ii
(c) i & iv
(d) ii & iv

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Solution

(b) i & ii

Non-availability of food and extreme weather conditions present in the habitat of the migratory birds are responsible for them to fly to far off areas where the conditions are more conducive and cogenial for their survial.

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Q. Question 10
Migratory birds fly to far away areas during a particular time of the year. Which of the following conditions present in their habitat during that time are responsible for this behaviour?

(i) Unavailability of food
(ii) Extreme weather conditions
(iii) Over crowding
(iv) Lack of nesting areas

(a) ii & iii
(b) i & ii
(c) i & iv
(d) ii & iv

Q. Question 4
The place meant for conservation of biodiversity in their natural habitat are

(i) Zoological garden
(ii) Botanical garden
(iii) Wildlife sanctuary
(iv) National park

(a) i & ii
(b) ii & iii
(c) iii & iv
(d) i & iv

\begin{matrix} Column A & Column B (i) Lack of iodine & (A) Causes goitre (i i) Person whose blood glucose is very high & (B) Estrogen (i i i) Lack of growth hormone & (C) Diabetic (i v) Responsible for puberty in females & (D) Causes dwarfism \end{matrix}

A mass attached to a spring executes SHM

Match the following conditions.

(i) $v_{x} > 0, a_{x} > 0 (I) x > 0$

(ii) $v_{x} < 0, a_{x} > 0$

(iii) $v_{x} > 0, a_{x} < 0 (I I) x < 0$

(iv) $v_{x} < 0, a_{x} < 0$

Which of the following indicates the correct order of acidic strength of the following acids.

I. HCOOH (Ka = 1.8 $\times$ $10^{- 4}$ )

II. $C H_{3} C O O H$ (Ka = 1.8 $\times$ $10^{- 5}$ )

III : HCN (Ka = 4.8 $\times$ $10^{- 10}$ )

IV: HS- (Ka = 1 $\times$ 10-14)

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