Introduction

Match the disease in column-I with the appropriate items (pathogen/prevention/treatment) in column-II.

The permissible use of the technique amniocentesis is for:

1.	detecting sex of the unborn foetus
2.	artificial insemination
3.	transfer of the embryo into the uterus of a surrogate mother
4.	detecting any genetic abnormality

Which one of the following is one of the characteristics of a biological community?

1.	Stratification	2.	Natality
3.	Mortality	4.	Sex-ratio

Select the correct statements from the following:

A:	Atoms of all elements are composed of two fundamental particles.
B:	The mass of the electron is
C:	All the isotopes of a given element show the same chemical properties.
D:	Protons and electrons are collectively known as nucleons.
E:	Dalton's atomic theory regarded the atom as an ultimate particle of matter.

Choose the correct answer from the options given below:

1.	B, C and E only	2.	A, B and C only
3.	C, D and E only	4.	A and E only

Given below are two statements: one is labelled as Assertion (A) and the other is labelled s Reason (R).

Assertion (A):	Amniocentesis for sex determination is one of the strategies of Reproductive and Child Health Care Programme.
Reason (R):	Ban on amniocentesis checks increasing menace of female foeticide.

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

1.	(A) is False but (R) is True.
2.	Both (A) and (R) are True and (R) is the correct explanation of (A).
3.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
4.	(A) is True but (R) is False.