Single step large mutation is called as:

The arrangement of the nuclei in a normal embryo sac from the chalazal to micropylar end in dicots is -

In which part of the body of a mosquito the malarial parasite are stored?

Match List I with List II.

LIST I	LIST II
A. Haemophilus influenzae	I. Elephantiasis
B. Rhino viruses	II. Ringworm
C. Wuchereria bancrofti	III. Common cold
D. Trichophyton	IV. Pneumonia

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Identify the autosome-linked recessive disorder.

Match List-l with List-II:

List-I (Types of barriers)	List-II (Examples)
(A) Cytokine barriers	(I) Mucus coating
(B) Physical barriers	(II) Tears from eyes
(C) Cellular barriers	(III) Phagocytosis
(D) Physiological barriers	(IV) Interferons

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Match List I with List II.

LIST I	LIST II
A. Dodo	I. Australia
B. Quagga	II. Mauritius
C. Thylacine	III. Africa
D. Stellar's Sea cow	IV. Russia

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The function \(f : R \rightarrow R\) defined by \(f(x)=\left\{\begin{array}{ll}x^2, & x \geq 1 \\ x, & x<1\end{array}\right.\) is

1.00 g of a non-electrolyte solute when dissolved in 50 g of organic solvent,
lowered the freezing point of the organic solvent by 0.50 K. If the freezing point depression constant of the organic solvent is \(5 K kg mol ^{-1}\), the molar mass of the solute will be

Area of region bounded by the curve \(y^2=4 x\) y-axis and the line y = 3 is:

Observe the illustration and answer the following question:

Which of the following is TRUE for spermatogenesis and oogenesis?
A. Spermatogenesis starts at puberty
B. Oogenesis starts at puberty
C. Two sperms are formed from one primary spermatocyte
D. One ovum is formed from one primary oocyte
Choose the most appropriate answer from the options given below:

What is the first step in acid catalyzed dehydration of alcohol?

Benzene ring in phenol is expected to give the characteristic substitution or replacement reactions i.e. halogenation, nitration, sulphonation, alkylation etc. In these reactions, the attacking reagent is electrophile. The phenolic group activates the ortho and para positions in the ring due to conjugation. Disubstitution reactions are quite fast as the electron density in the ring has increased considerably. Phenols do not respond to nucleophilic substitution reactions as it is influenced by phenolic group.
Secondary alcohol among the following is:

(A)

(B) \(H _2 C = CH _2- CH _2 OH\)

(C) \(H _3 C - CH _2- CH _2 OH\)
(D)
(E)

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