NSO Level 2 Class 9 Science Paper 2017 − 18 Questions and Answers Part 7

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Question43) Read the given statements regarding composite fish culture system and select the correct option regarding them.

I. P feeds on zooplanktons and lives mostly in the surface zone.

II. Both Q and R feeds on detritus. However, Q lives in the middle zone whereas R lives at bottom.

III. S feeds on aquatic plants and lives in the middle zone.

Choose the Correct Option

A. P could be Catla whereas S could be grass carp.

B. P could be silver carp whereas Q could be grass carp.

C. Q could be mrigal whereas R could be rohu.

D. R could be silver carp whereas S could be common carp.

Question44) Refer to the given figure showing a process to transport large amount of substances across the plasma membrane and select the correct statements regarding it.

Extracellular Fluid

(I) It is a nutritive and defensive process. Extracellular fluid

(II) Microfilaments play an important role in this process.

(III) It is the process that helps in removal of undigested food left in thecell.

(IV) It helps in replacement of internalized membrane by the fusion of formed vesicles with the cell membrane.

Choose the Correct Option

A. I and II only

B. II and IV only

C. I, II and IV only

D. II, III and IV only

Question45) Identify organisms X, Y and Z in the given chart and select the correct option regarding them.

Identify Organisms X, Y and Z in the Given Chart and Select the Correct Option Regarding Them
OrganismExternal fertilizationCold-bloodedFour chambered heart
X×
Y××
Z××

A. X could be Torpedo containing exoskeleton of cycloid or ctenoid scales.

B. Y could be Hyla having smooth and moist skin devoid of scales.

C. Z could be Gallus having exoskeleton of feathers.

D. X could be Triturus, Y could be Sphyrna and Z could be Draco.

Achievers section

Question46) Refer to the given graph which shows variable force acting on a particle of mass 1 kg and fills in the blanks by choosing an appropriate option.

Refer to the Given Graph

If the initial kinetic energy (at x = 0) of the particle is 25 J, then the kinetic energy of the particle at the end of 6 m and 16 m is (i) and (ii) respectively. The momentum of the particle at the end of 10 m and 14 m is (iii) and (iv) respectively.

A.

B.

C.

D.

Question47) Which of the following graphs cannot possibly represent one-dimensional motion of a particle?

One-Dimensional Motion of a Particle
One-Dimensional Motion of a Particle

A. I and II only

B. II and III only

C. I and IV

D. I, II, III and IV

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