MDCAT Biology Online Test With Answers

image
image
image

MDCAT Biology Online Test

Sr. # Questions Answers Choice
1 An ecosystem is made up of three main components: The herbivores, carnivores and omnivores The produces, the consumers and the decomposers Primary, secondary and tertiary consumers Producers, herbivores and carnivoers
2 The study of relationship of different communities (grouping of population) to environment is called: Synecology Community ecology Autoecology Both a & b
3 The study of relationship of a single population to its environment is called: Autecology Synecology Both a & b None
4 Charles Eton defined the niche as the species: Work Employment Job Occupation
5 In 1917, Joseph Grinnell an American ornithologist first proposed the term niche in: Taxonomy Neurology Ecology Embryology
6 The actual location or place where an organism lives is called its: Niche Habitat Abode Terrain
7 A thin layer (zone) of earth in which all living organisms exist is called: Biosphere Biome Ozone Ecosphere
8 Major regional ecological community of plants and animals forms: Triomes Biosphere Biomes Biogeography
9 All populations within an ecosystem are known as a: Population Community Species Clan
10 A group of interbreeding individuals of same species occurring together in space and time is called: Population Community Species Clan
11 The ecosystem consists of two basic interacting components: Living and physical Biotic and abiotic Living and biotic Both a & b
12 The major unit of ecology is the: Physical component Biotic component Ecosystem Logos
13 The term ecology originally was used in 1866 by the German zoologist: Charles Eton Ernst Haeckel Joseph Grinnell Carolus linnaeus
14 The term ecology comes from the Greek words Oikos, meaning "the family household" and logy (logos) meaning: The study of Living Building Niche
15 The organisms of same species live in a same place is called Community Population Consumers All of these
16 Identify correct trophic level of food chain Fox >>> rabbit >>> beetle Dog >>> Rabbit >>> grass Owl >>> Rat >>> Rabbit Fox >>> beetle >>> Rabbit
17 Succession starting in pond is called Hydrosere Xerosere Pioneers None of these
18 bare rocks are the habitats of  Mosses Lichens Grasses Trees
19 Overgrazing resulted in Diminishing the grasses Desert Barren land All of these
20 Grazing is important To maintain the population of competitors To maintain the population of grasses To maintain the vigor of grasses All of these
21 A process in which green plants are eaten by animals is called Grazing Predation Commensalization None of these
22 Animals feed on green plants and grasses are called Grazers Produces Consumers Predators
23 A process in which one organism get benefit from the relationship is known as Grazing Commensalism Symbiosis Mutualism
24 This is a ------------------- relationship between algae and fungi Symbiotic Mutualistic Parasitic Mycorrhizal
25 Mycorrhiza is an association of Algae with roots of higher plants Bryophytes with roots of higher plants Fungi with roots of higher plants Bacteria with roots of higher plants
26 Bacterial live and get food from roots of plants is an example of Symbiosis Mutualism Parasitism Infestation
27 Benefits brings about by both of the organisms is called Mutualism Symbiosis Anabolism catabolism
28 Which one of a endoparasite of organisms Fungi causes dandruff in hair Tapworms Earthworms Lices
29 Parasites live outside of the body are Ectoparasites Exoparasites Endoparasites All of these
30 The association between a host and parasite is called Symbiosis Mutualism Parasitism All of these
31 Predation decreases by decreasing the prey due to Decrease in food Decrease in water Decrease in consumers All of these
32 Which of the following is not the true about predation Prey increases by increasing the predation Predation increases by increasing the prey Prey decreases by increasing the predation Prey must follow the predation
33 Predation is a process of Prey Predator Prey and predator None of these
34 The establishment of woody plants that inhibits the growth of most plants other than mosses in succession is known as Climax stage Shrub stage Tree stage All of these
35 Lichens have thick crust and live in extreme conditions is a successional stage of Foliage lichen Crustose lichen Moss stage All of these
36 Xerophytes can withstand with extreme conditions due to the presence of Large parenchyma cells in the leaf Sunken stomata Thick cuticle and palisade layer All of these
37 Which of the following is an example of primary succession Foliage stage Moss stage Hydrosere and xerosere None of these
38 --------------- begins forged from bare rocks, sand for where no previous life was found Secondary succession Primary succession Succession Climax period
39 A new system is developed after an existing ecosystem is called Primary ecosystem Secondary ecosystem Hydrosere Xerosere
40 In an ecosystem after succession, a new invaders are called Pioneers Predecessors Climax community None of these
41 Plant and animals replace the earlier ones in a way of Community relay Succession Predecessors All of these
42 Community structures of an ecosystem is called Biosphere Succession Progression Climax community
43 Food web is the group of various Food substances Food chains Trophic levels All of these
44 Food web maintains the stability of Environment Biosphere Ecosystem Biotic components
45 All food chains and food webs begin from Consumers Green plants Fungi and bryophytes Dead organic matter
46 Food chain is an example of Predation Mode of nutrition Trophic levels of food All of these
47 After digestion, decomposers releases Various organic substances from organic matter Nitrates, phosphates, and calcium Citric acid, tartaric acid and oxlic acid All of these
48 Decomposers get their food from Soil particles Dead organic matter Green plants Living organisms
49 Bacterial and fungi are mainly included in the group of Consumers Decomposers Producers None of these
50 Consumers Are primarily animals that obtain energy directly or indirectly from producers Are primarily bacterial organisms that obtain energy directly or indirectly from producers Are secondary animals that obtain energy directly or indirectly from producers Are secondary plants that obtain energy directly or indirectly from producers
51 ------------------- are the autotrophs that capture and bring light energy into ecosystem Decomposers Algae Producers None o these
52 Which of the following is not true about abiotic components Water Temperature Consumers Gravity
53 Which of the following is not true about biotic components Producers Consumers Decomposers Atmosphere
54 All living organisms supported by biosphere are called Biotic components Abiotic components Autecology Synecology
Download This Set
×