BT101 Final Term MCQs

1. Densities close to carrying capacity ____ K selected
2. Mesosphere height _______85 to 100
3. About 31% of Earth's land surface is covered by ______ forests
4. Activated sludge-sewage mixture is called ______ mixed liquor
5. Pere David’s deer was a native species of _______ China
6. speciation, occurs within a single population _____Sympatric Speciation
7. Average bacteria diameter ____ 0.5 - 2.0 µm
8. Posterior flap of tissue called _____ bursa
9. Protonephridia of Phylum Platyhelminthes _____ Flame cells
10. amoeba engulf food by …. using pseudopodia ____ phagocytosis
11. the organ of excretion in Platyhelminthes _____ flame cell
12. mosses are examples of ____ non-vascular plants
13. All living organism 16% nitrogen by weight atmosphere is …. nitrogen by volume ____ 78 %
14. …. Species are species that occur outside of their natural ranges because of human activity _____ Exotic
15. Two or more species living in same habitat, reciprocally …each other's evolution____ Affect
16. Nosema bombicus parasitizes …Causing the disease pebrine or pepper disease ______Silkworms
17. Gene interactions …. fitness of alleles _________Affect
18. Land pollution --- affects the respiratory system of human beings. ___Indirectly
19. Extinct hippopotamus like_____________ Taxodone
20. Adult human body contain _____ of water________60%
21. Rate at new organic matter formed in all herbivores___ Secondary Productivity.
22. Near the surface of earth ozone concentration about ppm_____0.04-0.15
23. The total average height of troposphere is _________13km
24. Adult human body contain _____ of water________60%
25. ----------- are characteristics that increase the potential of an organism or species to successfully reproduce in a specified environment. ______Adaptation
26. The total average height of the troposphere is_______13 Km
27. Bird voice box _______ Syrinx
28. ------ Rapidly changes its color. ______ Chameleon

BT101 · Ecology Biodiversity & Evolution-I · CURRENT PAPERS (FINAL TERM 2022) · 17 Sep-2022 to 20 Sep-2022 · OBJECTIVE

29. The second major layer of Earth’s atmosphere is ________ Stratosphere
30. He joined --------- of medicine Scotland in 1825 but he was not interested in being physician. ______School
31. -------was first isolated and named in 1817 _________Chloroplast
32. The rate that new organic matter is made by means of individual growth and reproduction in all the herbivores_____ Secondary Productivity
33. -------- is removal of forest or stand of trees from land which is then converted to a non-forest use. ___ Deforestation
34. Storm water runoff is the number --- cause of stream impairment in urban areas___1
35. Own circular…… mostly attached to inner membrane _______ DNA
36. Winter Sleep Occurs in large animals to … reserves __________ Energy
37. Each successional stage is called a ____________Seral Stage
38. Terrestrial amphibians species excreted ____ urea
39. Mule produced from a mating of a male donkey and a mare is a sterile hybrid. It is example of __________Postmating isolation
40. Foraminiferans secreted ____ test
41. Open circulatory system released blood into ___ space. ________tissue
42. solar nebula _________ disc of dirt and gases
43. Unique execratory system of Phylum Nematod comprised of two or more ____renette cell
44. Nitrogen fixing bacteria use …. Enzyme _____nitrogenase
45. Rate of reproduction in common carp ____ 300,000/year
46. Short protein appendages smaller than flagella are ____ pilli
47. Cilia are used for locomotion and generation of… currents in water _______feeding
48. Secondary treatment of waste water involves ____ biological process
49. … and decomposers can be at trophic level as well. They return nutrients back in soil to be available for producers _________ Detritivore
50. Nervous system of Echinodermata consists of all except ____ brain
51. Individuals of a deme are more likely to breed with …. than with other individuals in the larger population. _______ one another
52. T. b. gambiense Causes sleeping sickness in _____ humans
53. Fertilization in humans is ____ internal

Q54. Form of lichen ____?

Q55. Average temperature of earth? ______?

Q56. Red tides produced by? _________?

Q57. Cage song is example of? ______?

Q58. Cage song is example of ______?

Q59. Cockroach is example of______?

60. O2 made stable …. of atmosphere. _____ 15%

Q61. Cause of ozone destruction____?

Q62. Soil divided into …. On the basis of climate. _______?

Q63. Red blot is caused by _____?

Q64. Abbreviation of DMS____?

Q65. Rock part of the earth core _____?

Q66. Blind indus is example of _____?

Q67. Mitochondria has its own _____?

68. Cladogram depict the sequence in the of derived characters--------Origin
69. Form of precipitation that is unusually acidic_______ Acid Rain
70. Decreases in genetic diversity make populations …likely to withstand environmental stress______ Less
71. …allow molecules to freely diffuse from one side of the membrane to the other. _____ Porins
72. Camillo Golgi country is ______ Italian
73. The orientation toward a factor is called ____ Taxis
74. Complexity of ecosystem make it more __________Stable
75. Lysosome were discovered by the Belgian cytologist de duve in ------by 1950s
76. Major mechanism through which genetic material is generated during molecular evolution. ___ New
77. Regions with identical climate have --------floras and faunas (buffoons’ law________ Different
78. Form of precipitation that is unusually acidic_______ Acid Rain
79. Hydrocarbons Diverse group of organic compounds that contain only ……... and carbon ______Hydrogen
80. Rise in mean temperature of 0.6-1.0°C in arid coastal areas, arid mountains and hyper arid plains. Observed in _________ Pakistan
81. Aeciospore consists exclusively of … extracellular ______Obligatory
82. First vertebrates possess amitotic eggs____ Reptile
83. Speciation occurs in single population____ Sympatric
84. is located above the thermosphere. ________Exosphere
85. is responsible for sustaining life on earth. ________ _Atmosphere
86. All of the frogs in a particular pond or all of the sea urchins in a particular tidepool make up a____ Deme
87. Ozone is made up of ______O3
88. Process of emigration cause…. Decrease in Population
89. solar nebula (disc of dirt and gases_____________ First Atmosphere
90. Distinct biological communities Formed in response to specific external factors in that environment__________ Biomes
91. Christian deDuve (1967) Isolated from cells by centrifugation____ Liver
92. Cytoskeleton provides support and shape to______ Cell
93. Natural selection ------ variations from a population by favoring one allele over other at a gene locus. _________ Removes