Cryopreservation technique used for the conservation of threatened animals and plants is:

Natality is associated with

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:

Read the following passage carefully and answer the given questions.
During anaerobic sludge digestion, bacteria produce a mixture of gases such as methane, hydrogen sulphide and carbon dioxide. These gases form biogas and can be used as source of energy as it is inflammable. The bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum. You must have noticed that bottled fruit juices bought from the market are clearer as compared to those made at home. This is because the bottled juices are clarified by the use of pectinases and proteases. Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol. The BOD test measures the rate of uptake of oxygen by micro-organisms in a sample of water and thus, indirectly, BOD is a measure of the organic matter present in the water.
BOD is a measure of-

In India, the number of biosphere reserves and national parks are -

Arrange the following in order of their appearance, if a sperm starts travelling from testicular lobules?
(A) Urethra
(B) Vas deferens
(C) Urethral meatus
(D) Vasa efferentia
Choose the correct answer from the options given below:

Statins are produced by:

If \(\theta \in[0, \pi]\) is the angle between any two non-zero vectors \(\vec{a}\) and \(\vec{b}\), such that \(|\vec{a} \cdot \vec{b}|=|\vec{a} \times \vec{b}|\), then \(\theta=\)

Which of the following represents Ohm's law for a conducting material?

At a place, the vertical component of Earth's magnetic field is \(\sqrt{3}\) times its horizontal component. If the total intensity of Earth's magnetic field at the place is 0.4 G, then the horizontal component of Earth's magnetic field is:

The interval in which the function \(f(x)=10-6 x-2 x^2\) is decreasing is :

In the context of humans, which one of the following groups will have 46 chromosomes:

In Kolbe's reaction, phenol undergoes :