Seedlings grown in dark are :

(A) similar to those grow in light 

(B) taller than those grow in light

(C) shorter than those grow in light 

(D) they don’t grow at all

In human brain, two cerebral hemispheres are connected by a bundle of fibres which is known as

(a) medulla oblongata

(b) cerebrum

(c) cerebellum

(d) corpus callosum

An electric heater consists of a nichrome coil and runs under 220 V, consuming 1 kW power. Part of its coil burned out and it was reconnected after cutting off the burnt portion. The power it will cunsume now is

(a) more than 1 kW

(b) less than 1 kW, but not zero

(c) 1 kW

(d) 0 kW

In an experiment represented in the schematic below, a plant species was grown in different day and night cycles and its photoperiodic flowering behaviour was noted. This species is a

(A)  short day plant and actually measures day length to flower

(B)  short day plant and actually measures night length to flower 

(C)  long day plant and actually measures night length to flower

(D)  long day plant and actually measures day length to flower 

Given the fact that histone binds DNA, it should be rich in 

(A)  arginine, lysine

(B)  cysteine, methionine

(C)  glutamate, aspartate

(D)  isoleucine, leucine

Short-sightedness in humans can be corrected by using

(a) concave lens

(b) convex lens

(c) cylindrical lens

(d) plain glass

In the figure below a ray of light travelling in a medium of refractive index µ passes through two different connected rectangular blocks of refractive indices µ₁ and µ₂ (µ₂ > µ₁). 

The angle of incidence θ₁ is increased slightly. The angle θ₂  

(A) increases. 

(B) decreases. 

(C) remains the same 

(D) increases or decreases depending on the value of (µ₁ /µ₂)

Let x, y, z be non-zero real numbers such that x/y+y/z+z/x=7 and y/x+z/y+x/z=9, then x³/y³+y³/z³+z³/x³-3 is equal to 

(A) 152 (B) 153 (D) 154 (D) 155

The figure of a centimeter scale below shows a particular position of the vernier calipers. In this position the value of x shown in the figure is ( figure is not to scale) 

(A)   0.02 cm

(B)  3.65 cm

(C)  4.15 cm

(D)  0.03 cm

Match the different types of heart given in Column I with organisms given in Column II. Choose the correct combination.

(a) P-ii, Q-iii, R-i

(b) P-iii, Q-ii, R-i

(c) P-i, Q-iii, R-ii

(d) P-ii, Q-i, R-iii