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Eamcet Zoology
Lessons
Unit - 1 Diversity in Living World - Animal Diversity
Unit - 1 Diversity in Living World-Animal Phyla
Unit - 2 Structural Organization in Animals-Animal Organization
Unit - 2 Structural Organization in Animals -Morphology
Unit- 5 Human Physiology -Body Fluids And Circulation
Unit- 5 Human Physiology -Breathing And Exchange of Gases
Unit- 5 Human Physiology-Chemical Coordination
Unit- 5 Human Physiology -Excretory System
Unit- 5 Human Physiology -Excretory System Human Physiology Digestion And
Unit- 5 Human Physiology -Locomotion And Movment
Unit- 5 Human Physiology -Nervous System
2 nd Year Unit- 1 Reproduction - Human Reproduction
2 nd Year Unit- 1 Reproduction -Human Reproductive Health
2 nd Year Unit - 2 Genetics And Evolution - Genetics
2 nd Year Unit - 2 Genetics And Evolution - Evolution
2 nd Year Unit - 3 Biology And Human Welfare - Animal Husbandary And Apiculture
2 nd Year Unit - 3 Biology And Human Welfare - Health And Diseases
2 nd Year Unit - 4 Biotechnology - Biotechnology
2 nd Year Unit- 5 Ecology And Environment - Biodiversity
2 nd Year Unit- 5 Ecology And Environment - Environmental Issues
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Eamcet Zoology
2 nd Year Unit- 5 Ecology And Environment - Environmental Issues
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Q.
A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this
(a) Lots of urea and phosphate fertilizer were used in the crops in the vicinity
(b) The area was sprayed with DDT by an aircraft
(c) The lake water turned green and stinky
(d) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis
Which two of the above were the main causes of fish mortality in the lake?
A.
a, b
B.
b,c
C.
c,d
D.
a,c
E.
None of the above
View Answer
Correct choice: D
Explanation:
none
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