Which one of the following regions will have the least number of bird species?

Microbe responsible for converting milk to curd is :

Read the following paragraph carefully and answer the given questions.
Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. For determining the cause of allergy, the patient is exposed to or injected with very small doses of possible allergens, and the reactions studied. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Heroin, commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
Which of the following technique is not very useful to detect the cancers of internal organs?

Observe the figure and answer the following:


What is the above figure representing?

During the development of human embryo, which of the following hormone is NOT produced by placenta?

Which one of the following is an example of man-made ecosystem?

Arrange the steps in correct order for somatic hybridization.
(A). Isolated protoplasm are fused together
(B). Isolate the protoplasts from a single cell of different plants
(C). Digest the cell wall to isolate the protoplasts
(D). Hybrid protoplasts grown to form new plants
Choose the correct answer from the options given below:

Why does colour of \(KMnO_4\) disappear when oxalic acid is added to its solution in acidic medium?

The statement which is not true -
(A) Boiling point of ethanol is greater than that of ethoxyethane due to H -bonding
(B) Ethoxyethane is soluble in water due to H-bonding
(C) Ethanol is soluble in water due to H -bonding
(D) Ethoxyethane has nearly same boiling point as that of butanol
Choose the correct answer from the options given below :

An electron moving with velocity of \(5.4 \times 10^6\) m/sec. What is the de-Broglie wavelength associated with them (\(h = 6.63 \times 10^{-34}\) J/s)

When methyl bromide is treated with sodium tert-butoxide, the compound formed is:

A wire of resistance 4 \( \Omega \) is used to make a coil of radius 7 cm. The wire has a diameter of 1.4 mm and the resistivity of its material is \( \rho = 2 \times 10^{-7} \, \Omega \, m \). The number of turns in the coil will be

The condition where one species is harmed whereas the other is unaffected is called.