Recombinant DNA technology involves the following steps in a specific sequence.
(A) Culture of the host cell
(B) Extraction of desired product
(C) Isolation of desired DNA fragments
(D) Transformation of the recombinant DNA into the host cell Arrange these sequences correctly and choose the correct answer from the options given below:

In some species of Asteraceae and grasses, seeds are produced without fertilisation. This phenomenon is knows as:

Identify, which is not the sexually transmitted infection?

Arrange the given stages involved in replication of retrovirus.
(A) New viral RNA is produced by the infected cell
(B) Viral DNA is produced by reverse transcriptase
(C) Viral DNA is incorporated into host genome
(D) Viral RNA is introduced into animal cell
Choose the correct answer from the options given below:

The DNA fingerprinting technique is based on -

Which of the following statements are correct about pollination?
(A) Wind pollinated flowers are often very colourful.
(B) In many aquatic plants like water lily, the pollination takes place by insects.
(C) Wind pollination is quite common in grasses.
(D) In most of the water pollinated species, pollen grains are protected from wetting by mucilaginous covering.
Choose the correct answer from the options given below :

Match List I with List II.

LIST I	LIST II
A. Epidermophyton sp.	I. Typhoid
B. Haemophilus influenzae	II. Elephantiasis
C. Wuchereria malayi	III. Ringworm
D. Salmonella sp.	IV. Pneumonia

Choose the correct answer from the options given below:

Read the passage carefully and answer the questions based on the passage:
Pollen pistil interaction involves all events from the landing of pollen grains on the stigma until the pollen tube enters the embryo sac (when the pollen is compatible). When a pollen tube grows through the style and enters into the ovules, it finally discharges two male gametes in one of the synergids. Syngamy and triple fusion are two fusion events occur in angiosperms. Thus, angiosperms exhibit double fertilization. The products of these fusions are the diploid zygote and triploid primary endosperm nucleus. Zygote develops into embryo and primary endosperm cell forms the endosperm tissue. The developing embryo passes through different stages before maturation.
The coconut water from tender coconut, a good source of nutrition is nothing but:

Which one of the following is not the invasive alien species?

A printed page is kept pressed by a glass cube-shaped paper-weight of edge 3.0 cm. The refractive index of the glass is \( \mu = 1.5 \).
By what amount will the printed letters appear to be shifted when viewed from the top?

Two circular coils of diameter 10 cm and 20 cm, carrying equal currents have the same number of turns. The ratio of magnetic fields produced at the center of coils, respectively will be

Arrange the following electrolytes in the increasing order of van't Hoff factor (i) for complete dissociation of solute.
A. \(\left[ Co \left( NH _3\right)_6\right] Cl _3\)
B. \(MgCl _2\)
C. \(K _4\left[ Fe ( CN )_6\right]\)
D. KCl
Choose the correct answer from the options given below:+

The direction cosines of the line
\(x-y+z-5=0\) and \(x-3 y-6=0\) are: