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Species diversity on earth is not uniformly distributed. It is generally highest in the tropics and decreases towards the poles.Earth's fossil history reveals the incidences of mass extinctions in the past. Earth's rich biodiversity is vital for the very survival of mankind. It is believed that communities with high diversity tend to be less variable and more productive. The reasons of conserving biodiversity are narrowly utilitarian, broadly utilitarian and ethical. Biodiversity conservation may be in-situ as well as ex-situ.
Which of the following is not included in in-situ conservation?

Arrange the following wall layers of microsporangium starting from outer to inner layer.
(A) Tapetum
(B) Endothecium
(C) Middle layers
(D) Epidermis
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Identify the statements which hold true for cancer
(A) Cancerous cells do not show contact inhibition
(B) Chemotherapeutic drugs are used to kill cancerous cells
(C) Benign tumors can reach distant sites through blood
(D) Non-ionising radiations can also cause cancer
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Sacred groves in India are related to:

Arrange the following steps in correct sequence for the technique of DNA fingerprinting.
(A) Detection of hybridized DNA fragments by autoradiography
(B) Separation of DNA fragments by electrophoresis
(C) Isolation and digestion of DNA
(D) Transferring of separated DNA fragments and hybridization using labelled VNTR probe
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Which of the following approach is not used for the treatment of cancer

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Salmonella typhi is a pathogenic bacterium which causes typhoid fever in human beings. Sustained high fever (39° to 40°C), weakness, stomach pain, constipation, headache and loss of appetite are some of the common symptoms of this disease. Typhoid fever could be confirmed by Widal test. Plasmodium enters the human body as sporozoites. The parasites initially multiply within the liver cells and then attack the red blood cells (RBCs) resulting in their rupture. The rupture of RBCs is associated with release of a toxic substance, haemozoin, which is responsible for the chill and high fever recurring every three to four days. There is lymphoid tissue also located within the lining of the major tracts (respiratory, digestive and urogenital tracts) called mucosa-associated lymphoid tissue (MALT). In our body, cell growth and differentiation is highly controlled and regulated. In cancer cells, there is breakdown of regulatory mechanisms. Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. Cancerous cells just continue to divide giving rise to masses of cells called tumors. Tumors are of two types: benign and malignant. Cannabinoids are a group of chemicals, which interact with cannabinoid receptors present principally in the brain. Generally taken by inhalation and oral ingestion, these are known for their effects on cardiovascular system of the body.
Which one of the following structures constitute about 50 percent of the lymphoid tissue in the human body?

Transgenic tobacco plant was developed to prevent Meloidegyne incognitia infestation. This was based on the method of cellular defence involving synthesis of:

Match List-I with List-II.

List-I	List-II
A. Reimer - Tiemann reaction	I. Benzene
B. Kolbe's reaction	II. Picric acid
C. Nitration of phenol with conc. \(HNO _3\)	III. Salicylic acid
D. Reaction of phenol with zinc dust	IV. Salicyaldehyde

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Let \(A\) be a square matrix of order \(3 \times 3\), then \(|K A|\) is equal to :

The refractive index of a glass prism is minimum for

The area (in sq. units) of the region bounded by the curve \(y=\sqrt{16-x^2}\) and x-axis is

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A homogeneous mixture of two or more than two components has uniform composition and properties. The binary solutions have two components, which may be solid, liquid or gas. The resultant solution has a larger amount of solvent and a smaller amount of solute. The amount of solute in a given amount of solvent decides the concentration of the resulting solution. The concentration can be expressed in various ways, like molarity, molality, normality and mole fraction.
Molarity of a solution containing 8 grams \(NaOH\) in one liter of water is: