Organism And Its Environment Test
Organism And Its Environment
This is online test 02 for CBSE class 12 Biology Organisms and Populations (Organism and Its Environment).. There are 10 questions in this test with each question having around four answer choices.
Questions & Answers
1
Biotic components of the ecosystem :
- Aneither share nor compete for resources
- BShare and compete for resourcesCorrect
- Conly share their resources
- Donly compete for resources
2
Homeostasis results into:
- AState of constancyCorrect
- BSelf and natural regulation disturbance
- CA system which can applied to the field of medicine
- DChange in external and internal environment of organism
3
Select that pair of factors which is responsible for wide variety of habitats formed within each biome :
- Alocal and regional variationsCorrect
- Bpollution and industrialisation
- Cnone of these
- Dadaptations and interactions
4
Which of the following groups will be able thrive in hypersaline lagoons :
- AStenothermal species
- BStenohaline species
- CEuryhaline speciesCorrect
- DEurythermal species
5
Which of the following should not be characteristic feature of any xerophytes?
- Asunken stomata
- Babsence of the cuticleCorrect
- Cleaves reduced into spines
- DCAM
6
Biotic potential can be described as:
- Apopulation size limit that environment can support
- Benvironmental resistance
- Cnone of these
- Dnatural capacity of organisms to reproduceCorrect
7
Edaphic factors will include:
- ApH, humidity and air
- BpH, topography and substratumCorrect
- CpH, temperature and rain
- Dtopography and water
8
Which of the following will not be considered a predator?
- AParamecium
- BVulturesCorrect
- Cstarfish
- DTiger
9
An example of hyper-parasite will be:
- APlasmodiumCorrect
- Btapeworm
- CWuchereria
- Dmosquito
10
If the body temperature of any homeotherm falls or rises then it would become:
- AResistant
- Bmore active
- CIllCorrect
- Dless active