Secretions of which structure is not essential for the maturation and motility of sperms.

Read the given passage and answer the following questions:
Secondary treatment or biological treatment: The primary effluent is passed into large tanks where air is pumped into it. This allows vigorous growth of aerobic microbes. While growing, these microbes consume the major part of the organic matter in the effluent. This significantly change the BOD (biochemical oxygen demand) of the effluent. The effluent in then passed into a tank a small part of the sludge is pumped back into the aeration tank to serve as the inoculum. The remaining major part of the sludge is pumped into large tanks called sludge digesters. Here, other kinds of bacteria grow anaerobically in the sludge. The biogas produced can be used source of energy as it is inflammable. The effluent from the secondary treatment plant is generally released into natural water bodies like rivers and streams.
Which of the following gas is not produced in anaerobic digestion?

How much energy will be converted by the primary producer to net primary productivity from 20,000 J of available sunlight energy?

The most number of nucleotides will be present in (from left to right)

Match List-I with List-II

List-I (Population interactions)	List-II (Species A / Species B)
(A) Competition	(I) - / 0
(B) Amensalism	(II) + / 0
(C) Commensalism	(III) + / -
(D) Parasitism	(IV) - / -

'* + 'sign for beneficial interaction, '-'for detrimental and '0 *' for neutral interaction
Choose the correct answer from the options given below:

In eukaryotes, RNA polymerase III transcribes:
(A) tRNA
(B) 5.8S rRNA
(C) 5srRNA
(D) snRNA
Choose the correct answer from the options given below:

Amniocentesis is not legally used to test:

If \( \vec{M} \) is the magnetic moment and \( \vec{B} \) is the magnetic field, then the torque is given by

Read the passage carefully and answer the given questions. Recombinant DNA Technology Asexual reproduction preserves the genetic information, while sexual reproduction permits variation. Traditional hybridization procedures used in plants and animals breeding very often lead to inclusion and multiplication of undesirable genes along with the desired genes. The techniques of genetic engineering, which include creation of recombinant DNA, use of gene cloning and gene transfer, overcome this limitation and allow us to isolate and introduce only one or a set of desirable genes without introducing genes into the target organism.
What is the purpose of using a gene promoter in recombinant DNA technology?

Methanogens do not produce:

Match List - I with List - II.

List - I	List - II
(A) The common region determined by all the constraints of LPP is called	(I) objective function
(B) Minimize \(z=c_1 x_1+c_2 x_2+\cdots+c_n x_n\) is	(II) convex set
(C) A solution that also satisfies the non-negative restrictions of a LPP is called	(III) feasible region
(D) The set of all feasible solutions of a LPP is a	(IV) feasible solution

Choose the correct answer from the options given below :

Match List I with List II

List - I	List - II
(A) Autogamy	(I) Oxalis
(B) Chasmogamo us flower	(II) Pollination within same flower
(C) Geitonogamy	(III) Genetically different types of pollens fall on stigma of the flower
(D) Xenogamy	(IV) Transfer of pollen grains from the anther to the stigma of another flower of same plant

Choose the correct answer from the options given below:

Aqueous solutions from the following with highest boiling point will be : (Assume no dissociation or association)