Which of the following equation correctly describes 'Net primary productivity'?

The primary oocytes are arrested at which stage of meiosis before birth?

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.
In EcoR I the latter 'R' is derived from the -

To produce in large quantities, the development of bioreactors, where large volumes ______ of culture can be processed, is required.

Which is correct about amensalism?

Match List I with List - II. -

List - I	List - II
(A) Leydig cells	(I) Human Chorionic Gonadotropin (hcg)
(B) Placenta	(II) Progesterone
(C) Corpus luteum	(III) Androgens
(D) Pituitary gland	(IV) Oxytocin

Choose the correct answer from the options given below :

Aneuploidy refers to the:

A \( 14.0 \, \mu\text{F} \) capacitor is connected to a 220 V, 50 Hz source. The value of peak current in the circuit is (Given: \( \pi = \frac{22}{7} \) and \( \sqrt{2} = 1.414 \)):

We can reduce eddy currents in the core of transformer by :

In a p-n junction under equilibrium:

A man takes a personal loan of Rs. 3,00, 000 at 6% per annum compounded monthly to be repaid by equal monthly installments in 3 years.
Find the EMI using flat rate method

Which of the following compounds comprise of a phenolic group?
(A) Salicylic acid
(B) Salicylaldehyde
(C) Cresol
(D) Catechol
Choose the correct answer from the options given below :

The magnetic field of a light wave at given time parallel to y-axis and is given by \( B = B_m \sin(kz - \omega t) \). In what direction does the wave travel and parallel to which axis does the associated electric field point at that time?