A population will not exist in Hardy-Weinberg equilibrium if:
1. individuals mate selectively
2. there are no mutations
3. there is no migration
4. the population is large
Subtopic:  Hardy Weinberg Law: 1 | Hardy Weinberg Law: 2 | Hardy Weinberg Law |
 62%
Level 2: 60%+
NEET - 2015
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Match each disease with its correct type of vaccine: 

Column-I Column-II
A. Tuberculosis  1. Harmless virus
B. Whooping cough   2. Inactivated toxin
C. Diptheria  3. Killed bacteria
D. Polio  4. Harmless bacteria
 
1. A-2 B-1 C-3 D-4 2. A-3 B-2 C-4 D-1
3. A-4 B-3 C-2 D-1 4. A-1 B-2 C-4 D-3
Subtopic:  Introduction |
Level 3: 35%-60%
NEET - 2015
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HIV that causes AIDS first starts destroying:
1. B-lymphocytes
2. leucocytes
3. helper T-lymphocytes
4. thrombocytes
Subtopic:  AIDS |
 92%
Level 1: 80%+
NEET - 2015
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The active form of Entamoeba histolytica feeds upon:

1. erythrocytes mucosa and submucosa of the colon
2. mucosa and submucosa of colon only
3. food in the intestine
4. blood only

Subtopic:  Amoebiasis |
Level 3: 35%-60%
NEET - 2015
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A high value of BOD (Biochemical Oxygen Demand) indicates that:

1. water is pure
2. water is highly polluted
3. water is less polluted
4. consumption of organic matter in the water is higher by the microbes
Subtopic:  Microbes in Sewage Treatment |
 83%
Level 1: 80%+
NEET - 2015
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Most animals are tree dwellers in a:

1. coniferous forest
2. thorn woodland
3. temperate deciduous forest
4. tropical rainforest
Subtopic:  Components & Types of Ecosystems |
 68%
Level 2: 60%+
NEET - 2015
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The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that:

1. both plant populations in this habitat decreased
2. population-B competed more successfully for food than population-A
3. population-A produced more offspring than population-B
4. population-A consumed the members of population-B
Subtopic:  Population Interactions: Competition |
 88%
Level 1: 80%+
NEET - 2015
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Cryopreservation of gametes of threatened species in viable and fertile conditions can be referred to as:

1. Advanced ex-situ conservation of biodiversity
2. In situ conservation by sacred groves
3. In situ cryo-conservation of biodiversity
4. In situ conservation of biodiversity

Subtopic:  Ex Situ Conservation of Biodiversity |
 85%
Level 1: 80%+
NEET - 2015
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Rachel Carson's famous book 'Silent Spring' is related to:

1. pesticide pollution
2. noise pollution
3. population explosion
4. ecosystem management
Subtopic:  Agrochemical & Radioactive Waste |
Level 3: 35%-60%
NEET - 2015
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Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to the depletion of the stratospheric zone?

1. Increased skin cancer
2. Reduced immune system
3. Damage to eyes
4. Increased liver cancer

Subtopic:  Ozone Layer Depletion |
 62%
Level 2: 60%+
NEET - 2015
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