In some plants, the ovary develops into fruit without fertilization. This phenomenon is called:

An insect ingests the inactive toxin, it is converted into an active form of toxin due to

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

In a garden pea, the axial flower is dominant to terminal flower. What will be the percentage of offsprings with terminal flowers, when two heterozygous plants are crossed?

The causes of biodiversity loss are:
(A) Habitat loss
(B) Invasion of alien species
(C) Co-extinction
(D) Endemism
Choose the correct answer from the options given below:

Which of the following is/are not the factor(s) causing the poor health of a person?
(A) Genetic disorders
(B) Infections
(C) Intake of unbalanced diet and un-clean water
(D) Having good eating habits
Choose the correct answer from the options given below:

In the exponential growth model equation dN/dt= rN 'N' stands for:

The molecule with largest \(C - X\) bond length is

In a galvanometer, there is a deflection of 10 divisions per mA. The resistance of the galvanometer is \( 60 \Omega \). If a shunt of \( 1 \Omega \) is connected to the galvanometer and there are 100 divisions in all, on the scale of the galvanometer, the maximum current that this galvanometer can read is

Match List-l with List-ll

List-l (Electronic configuration)	List-II (lon)
(A) \([ Ar ] 3 d^{10}\)	(I) \(Ce ^{4+}\)
(B) \(\left[ X _{ e }\right]\)	(II) \(Cu ^{+}\)
(C) \([ Rn ]\)	(III) \(Th ^{4+}\)
(D) \([ Xe ] 4 f^{11} 5 d^1\)	(IV) \(Lu ^{2+}\)

Choose the correct answer from the options given below:

For the brown ring test, the correct order of the steps in the experiment is :
(A) Pour conc. \(H_2SO_4\) very slowly along the side of the test tube, very few drops of the acid should be poured.
(B) Take half spatula of the given salt in a dry test tube.
(C) Add 2 - 3 mL of freshly prepared ferrous sulphate solution to the test tube.
(D) Make a solution of the given salt.
Choose the correct answer from the options given below:

Read the passage carefully and answer the questions
The carbonyl group of aldehydes and ketones is highly polar. The positively charged carbon is readily attacked by electron-rich nucleophile and the negatively charged oxygen atom is attacked by an electro-deficient electrophile. Aldehydes and ketones undergo nucleophilic addition reactions in the presence of acid or a base. The mechanism involves attack of a nucleophile on the electron deficient carbonyl carbon to form a tetrahedral intermediate. A new bond is formed between the carbon and oxygen. Protonation of the anion furnished by the reaction medium yields a neutral addition product. The addition product is same whether the reaction is catalyzed by acid or a base. For example in the presence of base aldehydes and ketones react with hydrogen cyanide to form cyanohydrin.
The source of nucleophile in the base catalyzed cyanohydrin formation is:

The area (in sq. units) of the region bounded by the curve \(y=x^5\), the \(x\)-axis and the ordinates \(x=-1\) and \(x=1\) is equal to: