Biology Questions: Chapter 13 Organisms And Populations
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What we have here are Biology Questions on Chapter 13 Organisms and Populations. The earth is made up of both living and nonliving things, and each has a role to play in our environment. If you are looking for a way to see just how much you understood about the chapter, this quiz will refresh your understanding. Give it a shot and see how much revision you need.
- 1.The study of interactions between loving organisms and environment is called:
- A.
Ecosystem
- B.
Phytogeography
- C.
Ecology
- D.
Phytosociaology
- 2.Sunken stomata are found in:
- A.
Hydrophytes
- B.
Xerophytes
- C.
Mesophytes
- D.
Halophytes
- 3.Many zooplankton species under unfavourable conditions enter a stage of suspended development called _______.
- A.
Diapause
- B.
Hibernation
- C.
Aestivation
- D.
Suspension
- 4.Mammals of colder climates generally have shorter _______ and _______ to minimize heat loss.
- A.
Ears and limbs
- B.
Ears and nose
- C.
Nose and limbs
- D.
Ears and hair
- 5.The organisms which are restricted to a narrow range of salinity are called:
- A.
Stenohaline
- B.
Euryhaline
- C.
Stenothermic
- D.
Eurythermic
- 6.The success of an animal is due to their ability to maintain a constant:
- A.
Body temperature
- B.
PH
- C.
Internal environment
- D.
Low temperature
- 7.Reproduction in an overpopulated country like India is a:
- A.
Waste of resources
- B.
Boon
- C.
Burden
- D.
Both 1 and 3
- 8.When two species come to meet together and live hand by hand further it is called:
- A.
Euthenics
- B.
Inbreeding
- C.
Eugenics
- D.
None of these
- 9.Exponential growth is maximum in:
- A.
Tissue culture cells
- B.
Embryo
- C.
Unicellular organisms
- D.
Multicellular organisms
- 10.Who stated that human population grows geometrically?
- A.
Malthus
- B.
Darwin
- C.
Cannon
- D.
Lamark
- 11.Predict the graph, if the rate of addition of new members increases with respect to the individuals lost of the same population.
- A.
Declined growth
- B.
Exponential growth
- C.
Zero population growth
- D.
None of these
- 12.A force acting against achievement of highest possible level of population growth is:
- A.
Carrying capacity
- B.
Environmental resistance
- C.
Population pressure
- D.
Saturation level
- 13.Number of individuals present per unit area at a given time is:
- A.
Population size
- B.
Population density
- C.
Distribution of population
- D.
Population ratio
- 14.The number of females to males per thousand individuals is:
- A.
Female ratio
- B.
Male ratio
- C.
Population ratio
- D.
Sex ratio
- 15.Plants that grow on saline soils are called:
- A.
Epiphytes
- B.
Psammophytes
- C.
Halophytes
- D.
Parasites
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