List - I Organisms | List – II Mode of Nutrition | ||
A. | Fleming | i. | Disc shaped sacs or cisternae near cell nucleus |
B. | Robert Brown | ii. | Chromatin |
C. | George Palade | iii. | Ribosomes |
D. | Camillo Golgi | iv. | Nucleus |
The material of the nucleus stained by the basic dyes was given the name chromatin by Flemming.
Ribosomes are the granular structures first observed under the microscope by George Palade.
Camillo Golgi first observed a densely stained reticular structure near the nucleus. It consists of many disc-shaped sacs or cisternae.
Assertion (A): Endosperm is haploid in Gymnosperms
Reason (R): Female gametophytic tissue acts as endosperm in Gymnosperms
List-I | List-II | ||
(A) | 1 mol of H2O to O2 | (I) | 3F |
(B) | 1 mol of MnO-4 to Mn2+ | (II) | 2F |
(C) | 1.5 mol of Ca from molten CaCl2 | (III) | 1F |
(D) | 1 mol of FeO to Fe2O3 | (IV) | 5F |
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 m distance(r) from the centre of the dipole of dipole moment vector
\(\vec{P}\) of magnitude, 4 × 10-6 C m, is ± 9 × 103 V.
(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below :