Generally, an angiosperm embryo sac at maturity is -

Select the components that are needed to set up a polymerase chain reaction:
(A) Two primers and dNTPs
(B) Template DNA
(C) DNA ligase
(D) DNA polymerase
Choose the correct answer from the options given below:

If white colour flower of Antirrhinum sp. successfully crossed with the pink
colour flower, what would be the proportion of white and pink color flowers
in the next generation?

Match List-I with List-II

List-I (Terms)	List-II (Examples)
(A) Somatic hybrid	(I) Bt toxin
(B) Tissue culture	(II) Apical and axillary meristem
(C) Insecticidal protein	(III) Pomato
(D) Virus free plant	(IV) Explants

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Which one of the following hormones is responsible for ovulation?

Identify the correct sequence of stages in the process of decomposition.
(A) Humification
(B) Fragmentation
(C) Catabolism
(D) Mineralisation
Choose the correct answer from the options given below:

Match the following List - I with List II of bioactive substance and their role:

List - I (Bioactive Substance)	List - II (Role)
(A) Statin	(I) Removal of oil stains
(B) Cyclosporin A	(II) Removal of clots from blood vessels
(C) Streptokinase	(III) Lowering of blood cholesterol
(D) Lipase	(IV) Immuno-suppressive agent

Choose the correct answer from the options given below:

A copper wire of area of cross-section \( 2 \times 10^{-6} \, \text{m}^2 \) and electron density \( 10^{28} \, \text{m}^{-3} \) carries a current of 1.6 A. Time taken by an electron to drift from one end of a 1.0 m long wire to its other end will be

Read the passage carefully and answer the questions.
Electrochemistry is the study involving two types of processes. One type involves the production of electricity from the energy released during a spontaneous chemical reaction. Galvanic cells like Daniel cells are used to produce electricity from the redox reaction. Nernst equation of a galvanic cell gives the relation between the standard cell potential and the concentration of the species involved in the redox reaction. The second type of study involves the cells in which electrical energy is used to bring about the chemical reactions in a non-spontaneous process. The conductance of electrolytic solution depends on many factors including the nature of the electrolyte and the dimensions of the electrolytic cell.
The following equation represents the reaction taking place in a Galvanic cell:
Mg(s) + 2Ag\(^+\)(0.001 M) \(\rightarrow\) Mg\(^2+\)(0.01 M) + 2Ag(s)
Calculate its \(E_{\text {cell }}\) at 298 K if \(E_{\text {cell }}^{\circ}=2.91 \mathrm{~V}\).

Value of \(\frac{e^{\sin \left(\tan ^{-1} x+\cot ^{-1} x\right)}}{e^{\sin \left(\sin ^{-1} x+\cos ^{-1} x\right)}}, x \in[-1,1]\), is:

If the lines \(\frac{1-x}{3}=\frac{y-2}{2 \lambda}=\frac{z-3}{2}\) and \(\frac{x-1}{3 \lambda}=\frac{y-1}{1}=\frac{6-z}{5}\) are perpendicular, then the value of \(\lambda\) is:

Identify the enzyme which is used for isolating genetic material from plant cells.

The abundant immunoglobulin present in colostrum of mother's milk to create passive immunity in infants is: