In plants, active absorption usually does NOT occur when ________.

A pair of analogous organs is

Arrangement of flowers in the given plant favours which type of pollination?

_____ liters of glomerular filtrate is produced by kidneys.

Match the Column I with Column II, with reference to human beings:

	Column I (Part of the alimentary canal)		Column II (length)
i.	Duodenum	a.	1.5 m
ii.	Jejunum	b.	26 cm
iii.	Ileum	c.	25 m
iv.	Large intestine	d.	3.5 m

Select the correct statement/s regarding blood groups in human.
i. Some genetically determined blood group systems are ABO, Rh, Duffy, Lewis, Bombay blood group etc.
ii. Three types of agglutinogens are present on surface of human RBCs such as A, B and D.
iii. Individuals with blood group "AB Rh +ve" have A, B and D antigens on the surface of their RBCs and both antibodies 'a' and 'b' in their plasma.
iv. Haemolytic disease of Newborn occurs when mother with Rh-ve blood group conceives Rh -ve foetus.
v. Individuals with 'AB' blood group are called universal donors while those with 'O' blood group are called universal acceptors, with reference to blood transfusion.

If the number of chromosomes in an endosperm of seed is 21, what will be the chromosome number in the secondary nucleus?

A square loop ABCD is moving with constant velocity ' \(\vec{v}\) ' in a uniform magnetic field ' \(\vec{B}\) ' which is perpendicular to the plane of paper and directed outward. The resistance of coil is ' \(R\) ', then the rate of production of heat energy in the loop is [ L - length of side of loop]

Which from following n mole molecules of carbohydrate contains 2 n mole molecules of galactose, n moles of glucose and n moles of fructose in it?

If \(3 \sin 2 \theta=2 \sin 3 \theta\) and \(0 < \theta < \pi\), then the value of \(\sin \theta\) is equal to

A source of sound emits sound wave of frequency ' \(f\) ' and moves towards an observer with a velocity \(\frac{\mathrm{V}}{3}\) where V is the velocity of sound. If the observer moves away from the source with a velocity \(\frac{\mathrm{V}}{5}\) the apparent frequency heard by him will be

If \(a x^{2}+2 h x y+b y^{2}+2 g x+2 f y+c=0\) represents a joint equation of directrices
of the hyperbola \(16 x^{2}-9 y^{2}=144\), then \(g+f-c=\)

A glass convex lens is of refractive index 1.55 with both faces of same radius of curvature. What is the radius of curvature required if focal length is to be \(20 \mathrm{~cm}\) ?