Down's syndrome is a genetic disorder. It is due to:

Match List-l with List-ll

List-l (Birth control methods)	List-II (Features)
(A) Diaphragms	(I) Removal of vas deferens
(B) Lactational amenorrhea	(II) Increase phagocytosis of sperms
(C) Vasectomy	(III) Absence of menstrual cycle and ovulation following parturition
(D) IUDs	(IV) Cover the cervix and blocks the entry of sperm

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Arrange the given stages involved in embryo development in a dicot angiosperm in correct sequence
(A) Globular embryo
(B) Proembryo
(C) Zygote
(D) Heart shaped embryo
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Match List-l with List-II

List-l (Term)	List-II (Function)
(A) Nuclease	(I) Synthesizes DNA from RNA
(B) Ligase	(II) Have both directions exonuclease activity and synthesize new polynucleotide
(C) DNA Polymerase I	(III) Degrades nucleic acids by breaking phosphodiester bonds
(D) Reverse Transcriptase	IV) Joins DNA molecules together by formation of phosphodiester bonds

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Meiotic division of the secondary oocyte takes place in the:

Baculoviruses are pathogens that attack insects and other arthropods. These viruses belong to the genus:

Match List - I with List - II.

List - I	List - II
(A) Mutualism	(I) Abingdon tortoise in Galapagos island and goat
(B) Commensalism	(II) Crow and Cuckoo
(C) Brood Parasitism	(III) Sea anemone and Clown fish
(D) Competition	(IV) Lichen

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A metallic wire of uniform area of cross section has a resistance \(R\), resistivity \(\rho\) and power rating P at V volts. The wire is uniformly stretched to reduce the radius to half the original radius. The values of resistance, resistivity and power rating at V volts are now denoted by \(R ^{\prime}, \square\) ' and \(P ^{\prime}\) respectively. The corresponding values are correctly related as ___________ . Fill in the blank with the correct answer from the options given below

What is the magnetic force acting on a proton (charge \( + 1.6 \times 10^{-19} \text{ C} \)) moving at an angle of \( 30^{\circ} \) across a magnetic field of \( 5.3 \times 10^{-3} \text{ T} \) at a speed of \( 3.0 \times 10^5 \text{ m s}^{-1} \)?

The area (in sq. units) of the region bounded by the curve \(y=\cos x\) between \(x=-\frac{\pi}{2}, x=\frac{\pi}{2}\) and the \(x\)-axis is

Consider the differential equation \(\frac{d y}{d x}+y \tan x=\sec x\), then which of the following statements are correct?
(A) It is homogeneous
(B) It has \(\sec x\) as its integrating factor
(C) Its general solution is \(y \sec x=\tan x+c\), where \(c\) is an arbitrary constant.
(D) Its degree is not defined
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Read the following paragraph carefully and answer the given questions.
Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. For determining the cause of allergy, the patient is exposed to or injected with very small doses of possible allergens, and the reactions studied. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Heroin, commonly called smack is chemically diacetylmorphine which is a white, odourless, bitter crystalline compound. This is obtained by acetylation of morphine. Techniques like radiography (use of X-rays), CT (computed tomography) and MRI (magnetic resonance imaging) are very useful to detect cancers of the internal organs. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal.
Which one of the following drugs can not quickly reduce the symptoms of allergy?

Match List-l with List-ll

List-l (Abbreviation used in reproductive health)	List-II (Features)
(A) IVF	(I) Sperm is directly injected into the ovum
(B) ZIFT	(II) Transfer of ovum from a doner into the fallopian tube of recipient
(C) GIFT	(III) Embryos with more than 8 blastomers is transfered into the uterus
(D) ICSI	(IV) Fertilisation outside the body

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