Match List-I with List-II

List-I (Barriers)	List-II (Examples)
(A) Physical barrier	(I) Acid in the stomach
(B) Cellular barrier	(II) Interferons
(C) Cytokine barrier	(III) Leucocytes in our body
(D) Physiological barrier	(IV) Skin on our body

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Identify the correct sequence of formation of embryo sac or female gametophyte in flowering plants?
(A) Female gametophyte
(B) 2-nucleate embryo sac
(C) Megaspore mother cell
(D) 4-nucleate embryo sac
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Trichoderma species is:
(A) Free living fungi
(B) Very common in the root ecosystem
(C) Effective biocontrol agent
(D) Resistance to insects
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Agarose gel electrophoresis is employed to check the progression of a restriction enzyme digestion of DNA. In this technique, the movement of a DNA does not depend on -

Which one of the following is not true for a molecule that can act as a genetic material?

Read the passage carefully. Attempt the questions.
An overwhelming majority (99 per cent) of animals and nearly all plants cannot maintain a constant internal environment. Their body temperature changes with the ambient temperature. In aquatic animals, the osmotic concentration of the body fluids change with that of the ambient air and water osmotic concentration. These animals and plants are simply conformers. Considering the benefits of a constant internal environment to the organism, we must ask why these conformers had not evolved to become regulators. Recall the human analogy we used above; much as they like, how many people can really afford an air conditioner? Many simply 'sweat it out' and resign themselves to suboptimal performance in hot summer months. Very small animals are rarely found in polar regions. During the course of evolution, the costs and benefits of maintainin a constant internal environment are taken into consideration. Some species have evolved the ability to regulate, but only over a limited range of environmental conditions, beyond which they simply conform.
If the stressful external conditions are localised or remain only for a short duration, the organism has five other alternatives for survival.
Identify the statements which support the reason why small animals are rarely found in polar regions.
A. Small animals have larger surface area relative to their volume
B. Small animals have larger volume relative to their surface area
C. Shrews and humming birds are not found in polar region
D. Small animals have smaller surface area relative to their volume

The spermatids are transformed into spermatozoa by the process called as

If corner points of a feasible region are \((0,0),(2,0),\left(\frac{20}{19}, \frac{45}{19}\right)\) and \((0,3)\), then
(A) Maximum value of \(z=5 x+3 y\) is 10
(B) Minimum value of \(z=5 x+3 y\) is 0
(C) Maximum value of \(z=5 x+3 y\) is \(\frac{235}{19}\) and minimum value is 0
(D) Maximum value of \(z=5 x+3 y\) is 10 and minimum value is 0
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Match List-I with List-II

List-I (Name of the test/Reaction)	List-II (Species)
(A) Tollen's Test	(I) \(Cu ^{2+} a n d OH ^{-}\)
(B) Fehling's Test	(II) \(Zn - Hg and HCl\)
(C) Clemmensen reduction	(III) \(2\left[ Ag \left(NH _3\right)_2\right]^{+} \) and \(OH ^{-}\)
(D) Wolff Kishner reduction	(IV) Hydrazine KOH /ethylene glycol

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

Match List I with List - II. -

List – l (Diseases)	List – II (Causative micro-organisms)
(A) Filariasis	(l) Haemophilus influenzae
(B) Common cold	(II) Wuchereria malayi
(C) Pneumonia	(III) Trichophyton
(D) Ringworm	(IV) Rhino viruses

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Considering the following statements; identify the correct statements:
(A) Scandium is regarded as a transition element, but zinc is not.
(B) \(V_{2}O_{3}\) is amphoteric and \(V_{2}O_{5}\) is basic oxide.
(C) The similar radii of Zr and Hf is a consequence of the lanthanoid contraction.
(D) The oxidation state of chromium in chromate and dichromate ion is same.
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Which of the following is the wrong statement? Coulomb's law describes the electric force that