MDCAT Biology Chapter 8 MCQ's Test With Answers

MDCAT Biology Chapter 8 MCQ's Test

Sr. # Questions Answers Choice
1 Forest ecosystem is subdivided into ____ type of forests. Two Four Five Three
2 Terrestrial ecosystem have main types of ecosystem: Five Four Three Two
3 One mechanism of temperature regulation was developed by land plans and animals by developing. Brak and skin Vascular tissues and circulatory system Cambium and excretory system Vascular tissue and respiratory system
4 One poles the average temperature is: At freezing point Below freezing point Above freezing point More then 5∘C
5 In lithospheric ecosystem the availability of water is: Unlimited UniForm Limited Zero
6 The dead plants and animal bodies in lakes are decomposed by certain: Cyanobacteria Bacteria Mold Protozoans 
7 In limnetic zone the phytoplankton are: Cyanobacteria Protozoan Fungi  Bacteria 
8 In littoral zone, the zooplanktons are: Protozoan and coelenterates Protozoan and porifers Protozoan and flatworms Protozoan and crustacean 
9 In littoral zone, the water is: Deeps Very deep Shallow Comes with wave only
10 The lake ecosystem can be divided into ______ number of zones: Two Three Four Five
11 The productivity of aquatic ecosystem is basically determined by the: Light and nutrients Light and carbohydrates  Light and proteins  Light and minerals  
12 The productivity can be indicated by: Consumption of water and evolve of O<sub>2</sub> Consumption of CO<sub>2</sub> and water Consumption of CO<sub>2</sub> and evolve of O<sub>2</sub> Consumption of minerals and evolve of N<sub>2</sub>
13 Fresh water ecosystem  cover the land only: 2% 3% 4% 1%
14 The essential requirement for life is: Minerals Water&nbsp; Carbohydrates Proteins&nbsp;
15 The nutrients in aquatic ecosystem tends to be concentrated near the Bottom Surface Center of total depth 10 feet below the surface
16 A little light is left to power photosynthesis at the depth of: 500 feet 700 feet 600 Feet 1000 Feet
17 Water changes its temperature: Faster than air Same as air Slower than air Sometime slower and sometimes faster
18 In hydrospheric ecosystem the exchange material and transfer of energy takes place.  Within water and air Within water and land Within water Within land and air&nbsp;
19 Salt water ocean and sea are the largest ecosystem which cover __________ of earth surfaces. 70% 71% 80% 65%
20 Life on earth is affected by both Weather and water Weather and climate Climate and water Water and air
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