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Plants like Elm (Ulmus), Dandelion (Taraxacum) and members of Rose Family vegetatively reproduce by
(1) Rhizome
(2) Sucker
(3) Stolon
(4) Corm

The cells of which of the following layers of the anther wall are multinucleated due to endomitosis?
(1) Epidemis
(2) Endothecium
(3) Middle layer
(4) Tapetum

The secondary sexual characters develop in females because of:
(1) estrogen
(2) androgens
(3) absence of androgens
(4) absence of estrogens

A lady is diagnosed to have both her fallopian tubes blocked. What ART can help her to conceive a child?
1. GIFT
2. ZIFT
3. IVF
4. SUZI

A dihybrid cross produces the following progeny - AaBb = 240; Aabb =754; aaBb = 746; aabb = 260. What is the distance between the two genes on the chromosome?
(1) 12.5 map units
(2) 1 map unit
(3) 20 map units
(4) 25 map units

Which of the following is the most important precondition for speciation to occur?
(1) Reproductive isolation
(2) A crash of the population size
(3) Adaptive radiation
(4) Random mating

Continued inbreeding can cause inbreeding depression. Whenever, this becomes a problem, selected animal of the breeding population should be mated with:
(1) related superior animals of same breed
(2) related superior animals of different breed
(3) unrelated superior animals of same breed
(4) unrelated superior animals of different breed

The major histocompatibility complex is a :

Microorganisms are used during which stage of the purification of the sewage water?
(1) Primary treatment
(2) Secondary treatment
(3) None of the above
(4) Both (1) and (2)

Impurities present in the ore which react to form fusible substance are known as 
1. Flux
2. Gangue
3. Mugget
4. Mineral

The increase in pressure  in order to decrease the volume of a gas by 5% at a constant temperature will be -
1. 5%
2. 5.26%
3. 10%
4. 4.26%

The pH of 0.1 M solution of anilium chloride is (K_a of ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NH}}_3^{+}$ = 10^-6)
(1) 3.5
(2) 3
(3) 4.5
(4) none of these

Ozonolysis of 2,3-dimethylbut-1-ene followed by reduction with zinc and water gives
1. methanoic acid and 3-methyl-2-butanone
2. methanal and 3-methyl-2-butanone
3. methanal and 2-methyl-3-butanone
4. methanoic acid and 2-methyl-3-butanone

Two springs with spring constants $k_1$ = 1500 N/m and $k_2$ = 3000 N/m are stretched by the same force. The ratio of potential energy stored in the springs will be 
1. 2:1
2. 1:2
3. 4:1
4. 1:4

A particle of mass m and charge q is placed at rest in a uniform electric field E and then released. The kinetic energy attained by the particle after moving a distance y is
$\left(a\right)qEy$
$\left(b\right)q{E}^{2}y$
$\left(c\right)qE{y}^2$
$\left(d\right) q^{2}Ey$

A neutron of mass m enters a uniform magnetic field B with the velocity v perpendicular to it. The radius of the circular path made by a neutron is :
1.  $\frac{\mathrm{mv}}{\mathrm{B}}$
2.  $\frac{\mathrm{mv}}{{\mathrm{B}}^2}$
3.  $\mathrm{Infinity}$
4.  $\mathrm{Zero}$

The current through a choke coil increases from zero to 6 A in 0.3 seconds and an induced emf of 30 V is produced. The inductance of the coil is
1.  5 H
2.  2.5 H
3.  1.5 H
4.  2 H