Biology Questions: Chapter 13 Organisms And Populations
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.Sunken stomata are found in:
- A.
Hydrophytes
- B.
Xerophytes
- C.
Mesophytes
- D.
Halophytes
- 2.The organisms which are restricted to a narrow range of salinity are called:
- A.
Stenohaline
- B.
Euryhaline
- C.
Stenothermic
- D.
Eurythermic
- 3.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
- 4.The study of interactions between loving organisms and environment is called:
- A.
Ecosystem
- B.
Phytogeography
- C.
Ecology
- D.
Phytosociaology
- 5.Many zooplankton species under unfavourable conditions enter a stage of suspended development called _______.
- A.
Diapause
- B.
Hibernation
- C.
Aestivation
- D.
Suspension
- 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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