In \('S'\) phase of the cell cycle

Given below are two statements : one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\) : Assertion \(A\) : FSH acts upon ovarian follicles in female and Leydig cells in male. Reason \(R\) : Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in male human being. In the light of the above statements, choose the correct answer from the options given below :

Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogentc action\(?\) \((a)\) Darwin's Finches of Galapagos islands. \((b)\) Herbicide resistant weeds. \((c)\) Drug resistant eukaryotes. \((d)\) Man\(-\)created breeds of domesticated animals like dogs.

Match List I with List II :

List I	List II
A. Incomplete dominance	I. Human skin colour
B. Co-dominance	II. Inheritance of flower colour in Antirrhinumsp.
C. Pleiotropy	III. Phenylketonuria disease in humans
D. Polygenic inheritance	IV. ABO blood groups

Which one of the following statements is correct?

From his experiments, \(S.L.\) Miller produced amino acids by mixing the following in a closed flask

Given below are two statements :

Statement I : In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic material and also as a catalyst for some important biochemical reactions in living systems. Being reactive, RNA is unstable.

Statement II: DNA evolved from RNA and is a more stable genetic material. Its double helical strands being complementary, resist changes by evolving repairing mechanism.

In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\). Assertion \(A\): The potential ( \(V\) ) at any axial point, at \(2 \mathrm{~m}\) distance ( \(r\) ) from the centre of the dipole of dipole moment vector \(\vec{P}\) of magnitude, \(4 \times 10^{-6} \mathrm{C} \mathrm{m}\), is \(\pm 9 \times 10^3 \mathrm{~V}\). (Take \(\frac{1}{4 \pi \epsilon_0}=9 \times 10^9 \mathrm{Sl}\) units) Reason \(R\): \(V= \pm \frac{2 P}{4 \pi \epsilon_0 r^2}\), where \(r\) is the distance of any axial point, situated at \(2 \mathrm{~m}\) from the centre of the dipole. In the light of the above statements, choose the correct answer from the options given below:

Secondary xylem and phloem in dicot stem are produced by

Zygotic meiosis is characteristic of

Match List \(I\) with List \(II\)

List \(I\)	List \(II\)
\(A\)Citric acid cycle	\(I\) Cytoplasm
\(B\) Glycolysis	\(II\) Mitochondrial matrix
\(C\) Electron transport system	\(III\) Intermembrane space of mitochondria
\(D\) Proton gradient	\(IV\) Inner mitochondrial membrane

Choose the correct answer from the options given below:

Which one of the following statements is incorrect?

Which one of the following is wrongly matched?