Which of the following statements are correct about the structure of a sperm?
A. It is composed of head, thorax, neck and tail
B. The neck region contains a lot of mitochondria
C. The mitochondria produces energy for the movement of tail
D. The tail facilitate sperm motility essential for fertilisation
Choose the most appropriate answer from the options given below:

Match List I with List II

LIST I	LIST II
A. Papaver somniferum	I. Charas
B. Nicotiana tabacum	II. Heroin
C. Erythroxylum coca	III. Tobacco
D. Cannabis sativa	IV. Cocaine

Choose the correct answer from the options given below:

Eli Lilly, in 1983, developed human insulin using rDT by combining chain A and chain B with:

Which one of the following layers of microsporangium nourishes the developing pollen grains?

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?

In humans, mammary gland is divided into _________ lobes.

Match List-I with List-II

List-l (Species)	List-II (Population interaction terms)
(A) Monarch butterfly	(I) Brood parasitism
(B) Cuckoo bird	(II) Commensalism
(C) Cuscuta	(III) Camouflage
(D) Sea anemone and Clown fish	(IV) Parasitism

Choose the correct answer from the options given below:

Match List-l with List-ll

List-l (Matrix A)	List-ll (Determinant of adjA)
(A) \(\left[\begin{array}{cc}2 & 1 \\ -1 & 2\end{array}\right]\)	(I) 3
(B) \(\left[\begin{array}{ll}3 & 4 \\ 3 & 6\end{array}\right]\)	(II) 6
(C) \(\left[\begin{array}{cc}3 & 7 \\ -2 & -4\end{array}\right]\)	(III) 5
(D) \(\left[\begin{array}{ll}4 & 3 \\ 3 & 3\end{array}\right]\)	(IV) 2

Choose the correct answer from the options given below :

In which ecosystem is the biomass of primary consumers greater than producers?

Which one of the followings is not a feature of insecticidal protein crystals formed by Bacillus thuringiensis:

Answer the question on basis of passage given below :
A ketone \([ A ]\) which undergoes haloform reaction gives compound \([ B ]\) on reduction. Compound
\([B]\) on heating with sulphuric acid gives compound \([C]\) which forms monozonide \([D]\). The compound \([D]\) on hydrolysis in the presence of zinc dust gives compound \([E]\). Compound \([E]\)
on oxidation gives \(C _2 H _4 O _2\) [F]
Identify Compound [A]

Answer the question on the basis of passage given below :
Adsorption is a surface phenomenon which can be expressed by means of an empirical relationship know as Freundlich Adsorption isotherm. The relationship given by \(\frac{x}{m} = Kp^{\frac{1}{n}}\ (n > 1)\)
x = Mass of the gas adsorbed
m = Mass of adsorbent
p = Pressure at which adsorption takes place
K and n are constant
The curve of above relationship indicate that at a fixed pressure there is a decrease in physical adsorption with increase in temperature. At high pressure, curves become parallel to pressure axis, indicating saturation of the surface of adsorbent.
Adsorption of a gas follow Freundlich isotherm shown below. \(\frac{x}{m}\) is proportional to

Evaluate \(\int_1^{\sqrt{3}} \frac{1}{1+x^2} d x\)