Hormones secreted by the placenta to maintain pregnancy are Option 1 : hCG, hPL, progestogens, estrogensOption 2 : hCG, hPL, progestogens, prolactinOption 3 : hCG, hPL, estrogens, relaxin, oxytocinOption 4 : hCG,progestogens, estrogens, glucocorticoids
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Q. The electric field of an electromagnetic wave in vacuum is given by The wave is reflected from the 𝑧 = 0 surface. If the pressure exerted on the surface is 𝛼𝜖0𝐸20, the value of 𝛼 (rounded off to one decimal place) is Ans: 0.8 Sol:
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Which part of poppy plant is used to obtain the drug “Smack”? Option 1 : FlowersOption 2 : RootsOption 3 : LatexOption 4 : Leaves
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In a growing population of a country, Option 1 : Reproductive individuals are less than the post-reproductive individuals.Option 2 : Pre-reproductive individuals are more than the reproductive individuals.Option 3 : Reproductive and pre-reproductive individuals are equal in number.Option 4 : Pre-reproductive individuals are less than the reproductive individuals.
All of the following are included in ‘Ex-situ conservation’ except Option 1 : Wildlife safari parksOption 2 : Botanical gardensOption 3 : Sacred grovesOption 4 : Seed banks
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Q. An infinitely long thin cylindrical shell has its axis coinciding with the z-axis. It carries a surface charge density 𝜎0cos𝜙, where 𝜙 is the polar angle and 𝜎0 is a constant. The magnitude of the electric field inside the cylinder is Ans:
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The similarity of bone structure in the forelimbs of many vertebrates is an example of Option 1 : HomologyOption 2 : Convergent evolutionOption 3 : AnalogyOption 4 : Adaptive radiation
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Q. A massive particle X in free space decays spontaneously into two photons. Which of the following statements is true for X? (A) X is charged (B) Spin of X must be greater than or equal to 2 (C) X is a boson (D) X must be a baryon Ans: X is a boson
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Which one of the following population interactions is widely used in medical science for the production of antibiotics? Option 1 : ParasitismOption 2 : AmensalismOption 3 : CommensalismOption 4 : Mutualism
Conversion of milk to curd improves its nutritional value by increasing the amount of Option 1 : Vitamin B12Option 2 : Vitamin AOption 3 : Vitamin EOption 4 : Vitamin D
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