Pollen grains in majority of angiosperms are shed at:

The hormone releasing IUDs function by-

Select the factor which does not affect Hardy-Weinberg Equilibrium?

Match List I with List - II.

List - I	List - II
(A) Pollination by water	(I) Honey bee
(B) Chasmogamous and Cleistogamous flowers	(II) Zostera
(C) Pollination by wind	(III) Oxalis
(D) Pollinating agent	(IV) Maize

Choose the correct answer from the options given below :

Jawless fish probably evolved around:

Bacillus thuringiensis is widely used these days as:

The process of copying genetic information from one strand of DNA into RNA is termed as

The area (in sq. units) of the region bounded by \(y=-1, y=2, x=y^3\) and \(x=0\) is equal to

Three capacitors each of capacitance 9 pF are connected in series. The capacitance of the combination would be :

Which of the following reactions will give 2-propanol ?
(A) \(CH _3- CH _2- COOH \xrightarrow[\text { (II) } H _2 O ]{\text { (I) } LAHH _4}\)
(B) \(\quad CH _2= CH - CH _3 \xrightarrow{\text { Neutral } KMnO _4}\)
(C) \(CH _2= CH - CH _3+ H _2 O \xrightarrow{ H ^{+}}\)
(D) \(CH _2 O \xrightarrow[ H _2 O ]{ C _2 H _5 MgI }\)
Choose the correct answer from the options given below :

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.
Which one of the following options is correct for working of restriction enzymes?

Hybridization of carbon atoms attached with halogens in haloalkanes & haloarenes are

Alum helps in purifying water by :
A. Coagulation of mud particles
B. Sedimentation of mud particles.
C. Dialysis
D. forming true solution with water
Choose the most appropriate answer from the options given below :