Arrange the steps involved in creating pest-resistant transgenic plants using RNA interference (RNAi).
(A) Binding of complementary RNAs to form double-stranded RNA (dsRNA).
(B) Formation of sense and antisense RNA in the host cells.
(C) Silencing of specific mRNA of the nematode.
(D) Introduction of nematode-specific genes into the host plant using Agrobacterium vectors.
Choose the correct answer from the options given below:

Which of the following alcoholic drink is not produced by distillation of fermented broth?

Sickle-cell anemia is caused due to:

Observe the figure and answer the following:


How many mitotic divisions occur in the nucleus of the functional megaspore to form embryo sac?

Observe the diagram and answer the question given below .

Each trophic level has a certain mass of living material at a particular time called as:

Read the given passage and answer the question.
ABO blood groups in human beings are controlled by the gene I. The plasma membrane of the red blood cells has sugar polymers that protrude from its surfaces and the kind of sugar is controlled by the gene. The gene (I) has three alleles IA, IB and I. The alleles IA and IB produce a slightly different form of the sugar while allele i does not produce any sugar. Because humans are diploid organisms, each person possesses any two of the three I gene alleles, IA and IB are completely dominant over I.
Match List - I with List - II.

List - I (Phenotype)	List - II (Genotype)
(A) Blood group A	(I) IB IB, IBi
(B) Blood group B	(II) IA, IA IA
(C) Blood group O	(III) IA IB
(D) Blood group AB	(IV) ii

Choose the correct answer from the options given below :

Read the following paragraph carefully and answer the given questions.
In the year 1963 the two enzymes responsible for restricting the growth of bacteriophage in E. coli were isolated. The first restriction endonuclease - Hind II, whose functioning depended on a specific DNA nucleotide sequence was characterized five years later. It was found that Hind II always cut DNA molecules at a particular point by recognizing a specific sequence of six base pairs. This specific base sequence is known as the recognition sequence for Hind II. Besides Hind II, today we know more than 900 restriction enzymes that have been isolated from over 230 strains of bacteria, each of which recognize different recognition sequences.
When DNA from different sources is cut by the same restriction enzymes, the resultant DNA fragments have the :

The value of \(\int_{-3}^2 x^2|2 x| d x\) is :

Chloroform is largely used for

Neanderthal man had a brain size of :

Under Ganga Action and Yamuna Action plans, it is proposed to

The value of the definite integral \(I=\int_1^2 \frac{1}{x\left(1+x^2\right)} d x\) is:

The core of electromagnets are made of ferromagnetic material like soft iron because the soft iron has-