The father of ecology in India is:

Match List-l with List-II

List-I (Terms)	List-II (Examples)
(A) Divergent evolution	(I) Eye of the octopus and mammals
(B) Convergent evolution	(II) Forelimbs in vertebrate animals
(C) Evolution by anthropogenic action	(III) Australian marsupials
(D) Adaptive radiation	(IV) Industrial melanization in moth

Choose the correct answer from the options given below:

In some organisms, male has ZZ chromosomes and female has ZW chromosomes. This type of sex-determination is found in:

We use microbes and microbially derived products almost every day. Bacteria called lactic acid bacteria (LAB) grow in milk to convert it into curd. The dough, which is used to make bread, is fermented by yeast called Saccharomyces cerevisiae. Microbes are used to produce industrial products like lactic acid, acetic acid and alcohol, which are used in a variety of processes in the industry. However, certain bacteria, which grow anaerobically on cellulosic material, produce large amount of methane along with CO2 and H2. These bacteria are collectively called methanogens, and one such common bacterium is Methanobacterium. These bacteria are commonly found in the anaerobic sludge during sewage treatment. Microbes are also used for commercial and industrial production of certain chemicals like organic acids, alcohols and enzymes.
Examples of acid producers are Aspergillus niger (a fungus) of citric acid. You are familiar with the commonly used antibiotic Penicillin. Do you know that Penicillin was the first antibiotic to be discovered, and it was a chance discovery? 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.
Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by:

Bt toxin produced by Bacillus thuringiensis is resistant to :

Which of the following is an example of 'Ex-situ Conservation' of threatened animals and plants?

Arrange the following trophic levels of the terrestrial ecosystem in correct order?
(A) Tertiary consumers
(B) Secondary consumers
(C) Producers
(D) Primary consumers
Choose the correct answer from the options given below:

A potential difference of 3 V is applied across a conductor of resistance \(1.5 \Omega\).
The number of electrons flowing through it in one second would be:
(Given charge of an electron, \(e=1.6 \times 10^{-19} C\) )

Read the passage carefully and answer the Questions:
According to Valence Bond theory, the metal atom or ion under the influence of ligands can use its (n - 1)d, ns, np or ns, np, nd orbitals for hybridisation to yield a set of equivalent orbitals of definite geometry such as octahedral, tetrahedral, square planar and so on. These hybridised orbitals are allowed to overlap with ligand orbitals that can donate electron pairs for bonding. While the VB theory, to a larger extent, explains the formation, structures and magnetic behaviour of coordination compounds, it suffers from the many shortcomings. The Crystal field theory (CFT) is an electrostatic model which considers the metal-ligand bond to be ionic arising purely from electrostatic interactions between the metal ion and the ligand. The five d orbitals in an isolated gaseous metal atom/ion have same energy, i.e., they are degenerate. This degeneracy is maintained if a spherically symmetrical field of negative charges surrounds the metal atom/ion. However, when this negative field is due to ligands in a complex, it becomes asymmetrical and the degeneracy of the d orbitals is lifted. It results in splitting of the d orbitals. The pattern of splitting depends upon the nature of the crystal field.
Which of the following represents the correct pair?

If \(y=\sqrt{a x+b}\), then \(y \frac{d^2 y}{d x^2}+\left(\frac{d y}{d x}\right)^2=\)

A nucleus \({ }_{92}^{238} X\) emits one alpha particle and then one beta particle (electron). The product nucleus will have

The second trophic level in an aquatic ecosystem is:

Fuel cell involves __________.