Which of the following hormones are secreted by placenta during pregnancy?
(A) Human Chorionic Gonadotropin
(B) Human Placental Lactogen
(C) Progestogens
(D) Cortisol
Choose the correct answer from the options given below:

Answer the questions from the figure given below:

'Taq' in Taq polymerase stands for:

The function of germ pore in a pollen grain is:

Which of the following statements are correct about restriction enzymes?
(A). Each restriction endonuclease recognizes a specific palindromic nucleotide sequence in the DNA.
(B). Endonuclease removes nucleotides from the terminal end of the DNA.
(C). The first discovered restriction endonuclease is Hind II.
(D). Restriction enzymes belong to a larger class of enzyme polymerase.
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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
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Read the following passage carefully and answer the given questions.
Cancerous cells just continue to divide giving rise to masses of cells called tumors. Benign tumors normally remain confined to their original location and do not spread to other parts of the body and cause little damage. The malignant tumors, on the other hand are a mass of proliferating cells called neoplastic or tumor cells. Transformation of normal cells into cancerous neoplastic cells may be induced by physical, chemical or biological agents. Ionising radiations like X-rays and gamma rays and non-ionizing radiations like UV cause cancer. Cancer-causing viruses are called oncogenic viruses which have viral oncogenes. The substances to which an immune response is produced are called allergens. The antibodies produced to these are of IgE type. Common examples of allergens are mites in dust, pollens, animal dander, etc. The primary lymphoid organs are bone marrow and thymus. The secondary lymphoid organs provide the sites for interaction of lymphocytes with the antigen, which then proliferate to become effector cells.
Cancer cells divide without any control due to:

The term "biodiversity" was popularised by:

Match List-I with List-II

List-I (Physical Quantity)	List-II (SI UNIT)
(A) Mobility of a charge carrier	(I) \( \Omega^{-1} \text{ m}^{-1} \)
(B) Resistivity	(II) \( \text{A m}^{-2} \)
(C) Current Density	(III) \( \text{m}^2 \text{ V}^{-1} \text{ s}^{-1} \)
(D) Conductivity	(IV) \( \Omega \text{ m} \)

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1.00 g of a non-electrolyte solute when dissolved in 50 g of organic solvent,
lowered the freezing point of the organic solvent by 0.50 K. If the freezing point depression constant of the organic solvent is \(5 K kg mol ^{-1}\), the molar mass of the solute will be

Read the passage carefully and answer the Questions
Molar conductivity \(\left(\Lambda_m\right)\) of a solution at a given concentration (c) is the conductance of volume, V of solution, containing one mole of electrolyte kept between the two electrodes with area of cross-section A and at a distance of unit length. It increases with the decrease in concentration and when the concentration approaches zero, the molar conductivity is called limiting molar
conductivity \(\left(\Lambda_m^0\right)\). For a strong electrolyte, \(\Lambda_m\) increases linearly with dilution and is given by \(\Lambda_m=\Lambda_m^0-A c^{1 / 2}\). The value of the constant A for a given solvent depends on the type of electrolyte along with temperature. According to Kohlrausch law, the value of \(\Lambda_m^0\) for an electrolyte is \(\Lambda_m^0=\nu_{+} \lambda_{+}^0+\nu_{-} \lambda_{-}^0\), where \(\nu_{+}\)and \(\nu_{-}\) are the number of cations and anions, respectively, per molecule of the electrolyte and \(\lambda_{+}^0\) and \(\lambda_{-}^0\) are limiting molar conductivities of cation and anion, respectively. Kohlrausch law finds many applications, like determining the solubility of a sparingly soluble salt, determining the degree of dissociation \(\left(\Lambda_m / \Lambda_m^0\right)\), and the dissociation constant of a weak electrolyte.
The plot between \(\Lambda_m\) and \(c^{1 / 2}\) is a straight line with

The domain of \(y=\cos ^{-1}\left(x^2-4\right)\) is

Let \(A\) be a non-singular matrix of order 3 and \(|A|=15\), then \(|\operatorname{adj} A|\) is equal to:

The increase in the sale of shawls during winters is an example of :