The seminal plasma is rich in:
(A) Fructose
(B) Amino acids
(C) Calcium
(D) Certain enzymes
Choose the correct answer from the options given below:

Which of the following factors can influence Hardy-Weinberg equilibrium?
(A) Natural Selection
(B) Genetic recombination
(C) Gene flow
(D) Mutation
Choose the correct answer from the options given below:

MONOHYBRID CROSS
The inheritance of flower color in the dog flower (Snapdragon or Antirrhinum sp.) can be understood by crossbreeding between true-breeding red-flowered (RR) and true-breeding white-flowered plants (rr). When they were crossed, F₁ (Rr) was pink. When F₁ was self-pollinated, the F₂ results were Red, Pink and White. Here the genotype ratios were exactly as expected, but the phenotype ratios have been changed. What happened was that R was not completely dominant over r and this made it possible to distinguish Rr as pink from RR (Red) and rr (White).
What will be the percentage of progeny in F₁ generation when RR (red flowered plant) is crossed with rr (white flowered plant) in the above passage?

Down's syndrome is a result of gain of extra copy of chromosome number:

Oral contraceptive pills used by females, function through:

In an ecosystem, if a fish is feeding on zooplankton, it is a:

Which one of the following property is exhibited by Datura plant?

Choose the correct statements from the following :
(A) two different solutions of sucrose of same molality prepared in different solventswill have the same depression in freezing point.
(B) the osmotic pressure of a solution is given by the equation \(II = CRT\) (where C is the molarity of the solution)
(C) decreasing order of osmotic pressure for 0.01 M aqueous solution of \(BaCl _2, KCl , CH _3 COOH\), and sucrose is \(BaCl _2 > KCl > CH _3 COOH >\) sucrose
(D) according to Raoult's law the vapor pressure exerted by a volatile component of asolution is directly proportional to its mole fraction in the solution
Choose the correct answer from the options given below :

Match List-I with List-II

List-I (Terms)	List-II (Features)
(A) Humus	(I) Mass of living organisms
(B) Detritus	(II) Dark-colored amorphous substance
(C) Producers	(III) Dead remains of plants and animals
(D) Biomass	(IV) Phytoplankton

Choose the correct answer from the options given below:

According to the electrochemical series, which of the following statements is incorrect?

The value of \(\sin ^{-1} \frac{3}{5}-\sin ^{-1} \frac{8}{17}\) is :

The solution of the differential equation \(\frac{d y}{d x}=\frac{x+y}{x-y}\) is

Fossils are generally found in: