MDCAT Biology Online Test With Answers

image
image
image

MDCAT Biology Online Test

Sr. # Questions Answers Choice
1 Several bacteria in soil oxidize ammonia or ammonium ions this oxidation is known as Ammonification Nitrification Assimilation All of above
2 These micro-organisms use the proteins and amino acids and release excess of ammonia (NH3) or ammonium ions (NH4). This process is known as Ammonification Nitrification Assimilation All of above
3 The principal stages of this cycle are Ammonification Nitrification Assimilation All of above
4 Nitrogen makes up ______ percent of the gases in atmosphere 76 77 78 98
5 The chief reservoir of nitrogen is the Atmosphere Water Soil Rain
6 The process by which the limited amount of nitrogen is circulated and recirculated throughout the world of living organisms is known as the Nitrogen cycle Nitrogen path way Nitrogen depletion None of above
7 The nutrient cycles are also called as Biogeochemical cycles Biochemical cycles Geo-cycles All of above
8 The chemical elements essential for life in living organisms are called ______ elements Biogenic Abiogenic Nutrient Both A and C
9 The eating of grasses is termed as Grassing Browsing Eating None of above
10 In this type of relationship only one organism benefits from the relationship. The other is not affected at all Mutualism Commensalism Parasitism All of above
11 Insect and flower relationship is the example of Mutualism Commensalism Parasitism All of above
12 Lichen is the example of Mutualism Commenaslim Parasitism All of above
13 Both organisms benefit from the ______ relationship Mutualism Commensalism Parasitism All of above
14 Mycorrhiza is an association between the roots of plants growing in acid soil and certain Virus Fungi Bacteria Nematods
15 The bacteria in the root nodules fix ______ in soil air, converting it to amino acids Nitrogen Phosphorus Sulphur Iron
16 ______ symbiont the root nodules of legume plants Virus Fungi Bacteria Nematods
17 Root Nodules are the example of Predation Symbiosis Parasitism None of above
18 There is an association between two organisms, which brings benefits to both the organisms Predation Symbiosis Parasitism None of above
19 Lices and mosquitoes are the examples of Endoparasite Ectoparasite Outer parasite All of above
20 Tape worm is the example of Endoparasite Ectoparasite Outer parasite All of above
21 Dandruff is the example of Endoparadite Ectoparasite Outer parasite All of above
22 The parasite that lives inside the body of the host is called as Endoparasite Ectoparasite Outer parasite All of above
23 The parasite that live outside the body of the host is called as Endoparasite Ectoparasite Outer parasite All of above
24 Diseases in living organisms which are caused by parasites are called Infestations Infection Fusion All of above
25 This is an association between a host and a parasite Predation Anemies Parasitism None of above
26 The predeter and prey relationship is called as Predation Animes Parasitism None of above
27 The animal that is caught and eaten is the Predator Prey Consumer Both a and c
28 An animal that preys other animals is a Predator Carnivore Consumer All
29 The last stage of plant succession is Pioneer Climax Community None of above
30 Polytrichum is a Lichen Algae Liver worts Moss
31 ______ lichens are the examples of foliose lichens Dermatocarpon Permellia Both a and b None of above
32 Succulent plants are Xerophytes Mesophytes Hydrophytes None of above
33 Plants growing in xeric condition are called Xerophytes Mesophytes Hydrophytes Schizophytes
34 The succession started on deserts is termed as Hydrosere Xerosere Derosere None of the above
35 The succession started on rocks is termed as Hydrosere Xerosere Serosere None of the above
36 The sucessions started on water is called as Hydrosere Xerosere Derosere None of the above
37 The establishment of stable vegetation on an area is termed as Plant succession Animal succession Succession All of the above
38 The succession started after destruction of an area is called as Primary succession Secondary succession Tertiary succession Quartnary succession
39 The succession started on bare area is called as Primary succession Secondary succession Tertiary succession Quartnary succession
40 The first comers in an area are termed as Consumers Producers Pioneers All of above
41 ______ is a change in the community structure of an ecosystem over a period of time Succession Primary succession Secondary succession None of above
42 Decomposers form _______ trophic level First Second Third All
43 Secondary consumes form ______ trophic level First Second Third None of above
44 Primary consumers form ______ trophic level First Second Third Forth
45 Green plants are ______ trophic level First Second Third Forth
46 The combination of many food chains is termed as Food chain Food web Trophic level None of above
47 Eagle may eat blue bird, but blue bird eats insects like caterpillar and caterpillar feeds on grass or green leaves. This is a ______ Food chain Food web Both A and B None of above
48 ______ are autotrophic organisms Producers Consumers Decomposers All of the above
49 Consumers are the all the organisms, primarily animals. They obtain energy directly or indirectly from Producers Consumers Decomposers All of the above
50 Which one of the following is not the main ionic nutrient Ca Na K U
51 Consumers are ______ organisms Autotrophic Heterotrophic Decomposers None of above
52 Man is Primary consumers Secondary consumers Tertiary consumers All of above
53 Loins are Primary consumers Secondary consumers Tertiary consumer All of above
54 Algae are Microproducers Macroproducers Both A and B None of above
55 Fungi are Producers Consumers Decomposers None of the above
56 Animals are Producers Consumers Decomposers Non of the above
57 Green photosynthetic plants are Producers Consumers Decomposers None of the above
58 Which of the following is not a biotic component Producers Consumers Decomposers Water
59 Which of the following is not an abiotic component Atmosphere Hydrosphere Lithosphere Producers
60 Biosphere is spread out over the surface of planet earth extending about ______ kilometers in the upper reaches of atmosphere and also in same distance into the depths of oceans 8 - 10 8 - 12 8 - 14 8 - 16
61 ______ components include all living organisms including plants and animals supported by biosphere Biotic Abiotic Physical Both a and b
62 The synecology is also termed as Community ecology Population ecology Specie ecology All of above
63 The study of different communities (grouping of population) in relation to their environment is called Autecology Synecology Ecology Biogeopraphy
64 The study of a single population's relationship to its environment will be called as Autecology Synecology Ecology Biogeopraphy
65 The basic role of an organism in the community is called Niche Factor Ability None of above
66 In 1917, Jpseph Grinnel an American ornithologist first proposed the term ______ in ecology Habitat Niche Area Space
67 Biosphere is a thin layer of ______ in which all living organism exist Earth Air Space None of above
68 There are ______ major terrestrial biomes 2 4 6 8
69 Each biome consists of a combination of plants and animals in the fully developed Climax community Community Population None of above
70 ______ is a group of interbreeding individuals occurring together in space and time Population Species Community All of above
71 The abiotic components are also termed as Chemical factors Physical factors Biological factors A and B
72 The ecosystem consists of interacting components, Biotic Abiotic Bioic and Abiotic None of these
73 The term originally was coined by the German zoologist Ernst Haeckel in 1666 1766 1966 1866
74 The term ecology comes form the ______ words oikos, meaning "The family household" Greek Latin English French
75 It is the study of the relationship of animals (organisms) to their environment Ecology Ecosystem Physiology Mycology
76 What is the 5th amino acid in sickle cell beta chain Histidine Proline Leucine Valine
77 In sickle cell beta chain glutamic acid is replaced by valine which is sixth amino acid from N-Terminal C-Terminal R-Terminal H-Terminal
78 Genes for alpha and beta chains of hemoglobin are found on which chromosomes? Chromosome 16 alpha; chromosome 11 beta Chromosome 11 alpha; chromosome 16 beta Chromosome 11 Chromosome 16
79 Sickle cell mutation affects One beta chain Both beta chains Only alpha chain None of the alpha or beta chain
80 Mutation may be caused by Chemicals Radiations Mutagens All of these
Download This Set
×