Ecosystem Mcqs
This Set of Multiple choice questions and answers focuses on study of Ecosystem in Biology. These questions are chosen from a collection of most authoritative and best reference books on Biology. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, MDCAT, Teaching jobs Tests and Medicine industry job interviews. One should practice our Mcqs to assimilate knowledge on Ecosystem comprehensively.
17. Disease in living organisms caused by parasites is called
Parasitism
Infestation
Predation
Infection
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
18. Legume plants are the hosts to
Rhizobium
Mycorrhiza
Lichen
Algae
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
19. A dual organism composed of symbiotic association of an alga living within a fungus myceliium is
Mycorrhiza
Rhizobium
Lichen
Legume
20. Symbiosis relationship in which only one organism is benefited is
Symbiosis
Commensalism
Mutualism
Unism
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
21. Sharks may have small fish attached to them called
Rumors
Romas
Romosis
Remoras
22. Over grazing leads to
Good pastured lands
Rocky areas
Totally barren lands
Salinity
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
23. Nitrogen constitutes about ______ % of atmosphere
58%
25%
10%
78%
24. Oxidation of ammonia or ammonium ions by bacteria in soil is called
Nitrification
Ammonification
Assimilation
Denitrification
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
25. Gross primary production is
Amount of energy fixed by small plants
Amount of energy fixed by large plants
Total amount of energy fixed by all plants
Primary production minus respiratory loss
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
26. Plant biomass is
Gross primary production
Net primary production
Gross primary production minus respiratory loss
Both b and c
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
27. Total solar energy trapped by the producers in an ecosystem is
95%
20%
78%
1%
28. The major unit of ecology is
Population
Community
Ecosystem
Biome
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
29. Which of the following is not true for food web?
Formed from food chain
Complex than food chain
Stable than food chain
Starts with primary consumers
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
30. Which one of the following is more tolerant to herbivore
Grasses
Trees
Herbs
None of these