Select the non-degradable pollutant (s) from the followings
Plastic
Organochlorine pesticides
Heavy metals
Domestic sewage
A.
Plastic
B.
Organochlorine pesticides
Pollutant is a substance that pollutes water or the atmosphere. It is classified into two types:
(i) Biodegradable pollutants are those that can be decomposed or degrades by microbes. They become a part of biogeochemical cycle and give back rapid tum over. e.g. domestic sewage, heavy metals.
(ii) Non-biodegradable pollutants are those that cannot be decomposed by· microbes and accumulate in the environment causing pollution. e.g. plastic and pesticides like organo chlorides (strong liphilic and nonbiodegradable nature).
Select the correct combination of statements regarding Myasthenia gravis.
I. It is an autoimmune disorder.
II. It causes insufficient acetylcholine binding that affects muscular contraction.
III. Antibodies are developed against acetylcholine
IV. Antibodies are developed against acetylcholine receptors.
V. Antibodies are developed against acetylcholine esterase.
VI. It causes drooping of eyelids.
I, III, IV, VI
I, II, IV, VI
I, II, IV, VI
II, III, IV, V
Select the correct combination of statements for DNA fingerprinting,
I. It is ELISA based technique.
II. It is PCR based technique.
III. It is used by forensic scientists.
IV. It is based on the fingerprint of the individual.
V. It is a test for paternity
I, II and III
II, III and IV
I, IV and V
I, III and IV
Match the items in column I with those in column II and choose the correct answer.
| Column I | Column II |
| A. Klinefelter syndrome | 1. Mutation in autosomal gene |
| B. Thalassaemia | 2. Mutation in sex chromosome linked gene |
| C. Down syndrome | 3. Trisomy of autosome |
| D. Colour blindness | 4. Trisomy of sex chromosme |
A- 1; B- 2; C- 3; D- 4
A- 2; B- 3; C- 4; D- 1
A- 3; B- 4; C- 1; D- 2
A- 4; B- 1; C- 3; D- 2
Select the correct combination (s) from the followings.
Encephalitis - Viral disease
Kala-azar - Phlebotomus
Rhabditiform larvae - Ascaris
Entamoeba - Sporogony
Match the following column I with column II.
| Column I | Column II |
| A. Producer | 1. Herbivores |
| B. Primary consumer | 2. Green plants |
| C. Secondary consumers | 3. Saprotrophs |
| D. Decomposer | 4. Carnivores |
A- 1; B- 2; C- 3; D- 4
A- 2; B- 1; C- 4; D- 3
A- 2; B- 4; C- 3; D- 1
A- 3; B- 2; C- 1; D- 4
An area is declared as 'Hot Spot' when
it has 1500 or more endemic species and 75% of its original habitat is lost
it has 1500 or more vertebrate species and 75% of its original habitat is lost
it has more than 2000 species of plants
most of the species inhabiting the area is facing the risk of extinction
Match the following column I with column II
| Column I | Column II |
| A. Cytology | 1. Study of fossils |
| B. Entomology | 2. Study of cells |
| C. Palaentology | 3. Study of birds |
| D. Ornithology | 4. Study of insects |
A- 2; B- 3; C- 4; D- 1
A- 2; B- 4; C- 1; D- 3
A- 1; B- 2; C- 4; D- 3
A- 3; B- 2; C- 1; D- 4
Select the correct statement (s) pertaining to Chipko movement.
It was led by Sunderlal Bahuguna
It was a tree hugging movement
It commenced in the Tehri-Garhwal district.
It received global attention on environmental protection.
