The Verhulst - Pearl Logistic Growth of population is characterised by :

The condition where one species is harmed whereas the other is unaffected is called.

Which of the following combination of hormones are secreted during pregnancy in humans?
(A) hCG
(B) LH
(C) hPL
(D) Relaxin
Choose the correct answer from the options given below:

The typical test cross is performed between -

Which one of the following hormones is essential for maintenance of the endometrium?

Read the paragraph given below and answer the question. If a person is born with a hereditary disease, can a corrective therapy be taken for such a disease? Gene therapy is an attempt to do this. Gene therapy is a collection of methods that allows correction of a gene defect that has been diagnosed in a child/embryo. Here genes are inserted into a person's cells and tissues to treat disease.
The first clinical gene therapy was given in to

Match List-l with List-ll

List-l (Trophic levels in an ecosystem	List-ll (Examples)
(A) Fourth trophic level	(I) Fishes
(B) Second trophic level	(II) Phytoplankton
(C) First trophic level	(III) Zooplankton
(D) Third trophic level	(IV) Man

Choose the correct answer from the options given below:

A slab of material of dielectric constant k has the same area as the plates of a parallel plate capacitor, but has a thickness \( \frac{3d}{4} \). Where d is the distance between plates of capacitor. The ratio of the capacitance with dielectric inside it to its capacitance without the dielectric is:

Sap of which plant is fermented to produce 'Toddy' in southern India ?

Sucrose on hydrolysis gives:

Human protein alpha -1 antitrypsin is used to treat

The probability distribution of a random variable X is given by

X	0	1	2
P(X)	\(1-7 a^2\)	\(\frac{1}{2} a+\frac{1}{4}\)	\(a^2\)

If \(a>0\), then \(P(0<X \leq 2)\) is equal to

Answer the question on basis of passage given below :
Lyophobic sols like those of metals (Au, Ag, etc) are unstable and are easily precipitated by addition of electrolytes. However, it is observed that the addition of certain lyophilic colloids like gums, soaps, gelatine, etc. to lyophobic colloids (like a metal sol) render lyophobic colloids difficult to coagulate by the addition of electrolytes. The process is known as 'protection' and the lyophilic colloids are termed as Protective colloids. It is believed that the protective action of the lyophilic colloids is due to the covering up of the particles of the lyophobic colloid by those of the lyophilic colloid.
Evidently, smaller the gold number of a protective colloid, the greater is its protective action. In which of the following sols, the colloidal particles will move towards the cathode during electrophoresis?