Practice Test

Q1) The interaction among organisms in a community called as biotic factors influence: Show Answer

Q2) Organisms inhabiting a common environment belong to the same: Show Answer

Q3) A biotic community is an assemblage of: Show Answer

Q4) A community is not able to survive without: Show Answer

Q5) Which of the following term is used for the "study of plant community"? Show Answer

Q6) A community that starts the process of succession in a habitat is called: Show Answer

Q7) When the vegetation of any region reaches climatic climax, it is: Show Answer

Q8) Primary succession starts with: Show Answer

Q9) In a biotic community the most important factor for survival of an animal is: Show Answer

Q10) The basic unit in ecological studies is population. The sum of all the populations of the same kind of organisms form: Show Answer

Q11) Primary succession refers to the development of communities on a: Show Answer

Q12) The first plants to appear on a badly burnt forest area will most probably be: Show Answer

Q13) In which type of community, the number of species per unit area will be more: Show Answer

Q14) Generally succession leads to a climax community composed of: Show Answer

Q15) The effect of interspecific competition on niches is to make them: Show Answer

Q16) The most effective defences of plants against the herbivores are: Show Answer

Q17) Symbiosis is an association between two species in which: Show Answer

Q18) Which of the following interaction will not promote co-evolution? Show Answer

Q19) The kind of climax community in an area depends mostly on the areas: Show Answer

Q20) Most agriculture makes use of plants from: Show Answer

Q21) More of the number of species in a community, more will be: Show Answer

Q22) Plant community may be defined as: Show Answer

Q23) Intermediate communities between pioneer and climax communities are called as: Show Answer

Q24) Occurrence of 200 chlorella in the body wall of Hydra is: Show Answer

Q25) When an organism is benefited without affecting the other the relationship is termed: Show Answer

Q26) A flowering plant and the animal that pollinates it are examples of: Show Answer

Q27) The most successful parasite is the one that: Show Answer

Q28) In commensalism: Show Answer

Q29) An association of a small fish (Fierasfer) inhabiting in the cloaca of sea cucumber is an example of: Show Answer

Q30) The animals which preys the other living species is known as: Show Answer

Q31) An association of different interrelated populations belonging to different species in common environment which can survive in nature is called: Show Answer

Q32) A direct food relation between two species of animals in which one animal kills and feed on another is referred to as: Show Answer

Q33) An association of two species where one is benefited and other remains unaffected or unharmed, it is called: Show Answer

Q34) An association of two species of organisms where both the partners derive benefit from each other is called: Show Answer

Q35) An association between a sea anemone Adamsia, and a hermit crab living in a gastropod shell is: Show Answer

Q36) Mimicry is a device for: Show Answer

Q37) The conversion of a lake to a terrestrial community is a form of: Show Answer

Q38) An ecological community is an assemblage of: Show Answer

Q39) Which of the following is a negative interaction between the population? Show Answer

Q40) One of the following relationship is useful to one organism and of no significance to other: Show Answer

Q41) A community is: Show Answer

Q42) The sum of the population of the same king constitutes a: Show Answer

Q43) The philosophy behind the existence of a community is: Show Answer

Q44) Generally the time taken for a secondary succession to reach climax stage is: Show Answer

Q45) Mutualism exists between: Show Answer

Q46) Sanke is a: Show Answer

Q47) Utricularia is a: Show Answer

Q48) In ecological succession from pioneer community to climax community, the biomass: Show Answer

Q49) Organisms sharing a common environment belong to same: Show Answer

Q50) Female anopheles mosquitoes sucking human blood at intervals are: Show Answer

Q51) Most interacting populations are: Show Answer

Q52) Desert can be converted to green lands by: Show Answer

Q53) The bird enters the mouth of crocodile and feeds on parasitic leeches. The bird gets food and crocodile gets rid of blood sucking leeches. Both the partners can live independently. Such an association is: Show Answer

Q54) In minicry, the individual which is benefited is called: Show Answer

Q55) When animals feed on other dead animals which had died naturally or had been killed by another animals, this relationship is termed as: Show Answer

Q56) Which one of the following is protective device? Show Answer

Q57) Relationship between water-fern Azolla and nitrogen-fixing cyanobacterium Anabaena is: Show Answer

Q58) Gause's hypothesis/principle is related to: Show Answer

Q59) Series of changes on previously barren area is: Show Answer

Q60) Secondary succession will not be completed if the bare area is invaded by: Show Answer

Q61) Plant succession occurring in a sandy area is: Show Answer

Q62) A plant growing on rock is: Show Answer

Q63) Scientific study of mimicry was carried out first by: Show Answer

Q64) A butterfly of India when resting with folded wings resembles a dead leaf. This mechanism of protection is called: Show Answer

Q65) The first scientific account of mimicry was given by: Show Answer

Q66) Fungal association of roots of higher plants in mycorrhiza is known as: Show Answer

Q67) Hyperparasite is a kind of parasite which: Show Answer

Q68) Which of the following statements is correct regarding the two organisms in commensalism? Show Answer

Q69) Which is not characteristic of intestinal symbionts? Show Answer

Q70) Cause of mimicry is: Show Answer

Q71) The individuals that shows mimicry is called: Show Answer

Q72) Succession in an ecosystem is the result of: Show Answer

Q73) Mycorrhiza is an example of: Show Answer

Q74) Lichens are well known combination of an alga and a fungus where fungus has: Show Answer

Q75) An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having: Show Answer

Q76) What is keystone speices? Show Answer

Q77) Term used to describe non-dominant species that dictate community structure is: Show Answer

Q78) In succession, complexities in structure: Show Answer

Q79) Small fish gets stuck near the bottom of a shark and derive its nutrition from it. This kind of association is called as: Show Answer

Q80) Find out the correct order of succession levels in xerarch: Show Answer

Q81) The concept of chemical evolution is based on: Show Answer

Q82) Which one of the following is considered as pioneer community in xerarch? Show Answer

Q83) Which one of the following statements is correct for secondary succession? Show Answer

Q84) Commensalism is a type of interaction which is: Show Answer

Q85) Which of the following interaction has adverse effect on both the species? Show Answer

Q86) One of the following is a functional association not merely living together: Show Answer

Q87) Select the mismatch pair: Show Answer

Q88) In terrestrial communities, which of the following are dominants? Show Answer

Q89) The species having much greater influence on community characteristics, relative to their low abundance or biomass are called: Show Answer

Q90) Which of the following is pioneer in succession in hydarch? Show Answer

Q91) Select the correct statement: Show Answer

Q92) An association of two species in which both species are benefited is called: Show Answer

Q93) Succession involves a turnover of species during: Show Answer

Q94) Select the statement, which best explains commensalism: Show Answer

Q95) Community is best defined as aggregation of: Show Answer

Q96) Parasite can be best explained as an organism which depends on: Show Answer

Q97) Both, hydrarch and xerarch successions lead to Show Answer

Q98) Series of changes in structure and comparition of communities on previously barren area is Show Answer

Q99) The species that invade a bare area in ecological succession are called Show Answer

Q100) The entire sequence of communities that successively changes in a given area are called Show Answer

Q101) A community that starts the process of succession in a barren habitat is called Show Answer

Q102) In plant succession, when climax is reached, the net productivity Show Answer

Q103) The transition zone between two communities is known as Show Answer

Q104) Term ‘ecosystem development’ to ecological succession was given by Show Answer

Q105) Biotic community is the assemblage of populations of Show Answer

Q106) What is a keystone species? Show Answer

Q107) Synecology is the study of relationship between Show Answer

Q108) The organisms inhabiting a common environment belong to the same Show Answer

Q109) The species of plants that plays a vital role in controlling the relative
abundance of other species in a community is called Show Answer

Q110) All successions irrespective of the habitat proceed to which type of
climax community? Show Answer

Q111) The pioneer species in a hydrarch succession are: Show Answer

Q112) The species that come to appear in bare area are called Show Answer