The exaggerated response of the immune system to certain antigens present in environment is called as:

Which of the following organism does not show 'XO' condition chromosomes?

Observe the given figures and answer the question

Which of the following correctly identifies the storage tissue and outer covering in Figure III?
A. J-Endosperm, K-Seed coat
B. I-Cotyledon, J - Endosperm
C. K-Aleurone layer, J - Testa
D. I-Endosperm, H - Radicle

The Verhulst - Pearl Logistic Growth of population is characterised by :

The factors that affect the Hardy Weinberg equilibrium are:
(A) Gene flow
(B) Genetic Drift
(C) Mutation
(D) Feeding habit
Choose the correct answer from the options given below:

Read the following passage carefully and answer the given questions.
Some strains of Bacillus thuringiensis produce proteins that kill certain insects such as lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes). B. thuringiensis forms protein crystals during a particular phase of their growth. Transgenic animals that produce useful biological products can be created by the introduction of the portion of DNA (or genes) which codes for a particular product such as human protein (a-1-antitrypsin) used to treat emphysema. In 1997, the first transgenic cow, Rosie, produced human protein-enriched milk (2.4 grams per litre). The milk contained the human alpha-lactalbumin and was nutritionally a more balanced product for human babies than natural cow-milk. A nematode Meloidegyne incognitia infects the roots of tobacco plants and causes a great reduction in yield. A novel strategy was adopted to prevent this infestation which was based on the process of RNA interference (RNAi). This method involves silencing of a specific mRNA due to a complementary dsRNA molecule that binds to and prevents translation of the mRNA (silencing). Biopiracy is the term used to refer to the use of bio-resources by multinational companies and other organisations without proper authorisation from the countries and people concerned without compensatory payment. ELISA is based on the principle of antigen-antibody interaction. Infection by pathogen can be detected by the presence of antigens (proteins, glycoproteins, etc.) or by detecting the antibodies synthesised against the pathogen.
Biopiracy is the term used to refer:

The water in the tender coconut is actually :

Mr. Vishnu has an initial investment of Rs. 80,000 in an investment plan. After 3 years, it has grown to Rs. \(1,00,000\), then his rate of return is

Identify the order of the two reactions whose rate constants are given below:
(i)k = 2.3 × 10^-5 L mol^-1 s^-1
(ii)k = 3 x 10^-4s^-1

Magnetic moment values for \(\left[ Fe \left( H _2 O \right)_6\right]^{3+}\) and \(\left[ Fe ( CN )_6\right]^{3-}\) are ....

The work function for a metallic surface is 4.0 eV. The longest wavelength of light that can cause photoelectron emission is approximately:

In the given complexes, the heteroleptic complexes is/are:
A. \(\left[ Co \left( NH _3\right)_6\right]^{3+}\)
B. \(\left[ Cr \left( H _2 O \right)_6\right]^{3+}\)
C. \(\left[ Ni ( Cl )_2\left( PPh _3\right)_2\right]\)
D. \(\left[ Co \left( NH _3\right)_4 Cl _2\right]^{+}\)
Choose the correct answer from the options given below:

A brown ring is formed in the ring test for \(NO _3^{-}\)ion. It is due to the formation of: