Organisms and population +2 Part I

objteatime.blogspot.com, biology-zoology.blogspot.com 12th Organisam and Population Part I- Exam Code ORGPOPN01

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1)All populations in a given physical area are defined as
  a)   Biome
  b)   Ecosystem
  c)   Territory
  d)   Biotic factors

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2) Organisms which can survive a wide range of temperature are called
  a)   Ectotherms
  b)   Eurytherms
  c)   Endotherms
  d)   Stenotherms

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3) The interaction in nature, where one gets benefits on the expense of other is....
  a)   Predation
  b)   Mutualism
  c)  Amensalism
  d)   Commensalism

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4)Predation and parasitism are which type of interactions?
  a)   (+ , + )
  b)   (+ , O )
  c)   (- , - )
  d)   (+ , - )

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5) Competition between species leads to
  a)   Extinction.
  b)   Mutation
  c)   Amensalism
  d)   Symbiosis

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6) Which of the following is an r-species?
  a)   Human
  b)   Insects
  c)   Rhinoceros .
  d)   Whale.

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7) Match the following and choose the correct combinations from the options given below

Column A	Column B
A. Mutualism	1. Lion and Deer
B. Commensalism	2. Round warm and man
C. Parasitism	3. Birds compete with squirrels for nuts
D. Competition	4. Sea anemone on hermit crab
E. Predation	5. Bernacles attached to Whales

  a)   A-4, B-5, C-2, D-3, E-1
  b)   A-3, B-1, C-4, D-2, E-5
  c)   A-2, B-3, C-1, D-5, E-4
  d)   A-5, B-4, C-2, D-3, E-1

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8)The figure given below is a diagarammatic representation of response of organisms to abiotic factors. What do A, B and C represent respectively?

No.	A	B	C
a	Conformer	Regulator	Partial Regulator
b	Regulator	Partial Regulator	Conformer
c	Partial Regulator	Regulator	conformer
d	Regulator	Conformer	Partial Regulator

  a)     b)     c)     d)  

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9) The relationship between sucker fish and shark is. ?
  a)   Competition
  b)   Commensalism
  c)   Predation
  d)   Parasitism.

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10) What type of human population is represented by the following age pyramid?
  a)   Vanishing Population
  b)   Stable Population
  c)   Declining Population
  d)   Expanding population

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11) Which of the following is correct for r-selected species
  a)   Large number of progeny with small size
  b)   large number of progeny with large size
  c)   small number of progeny with small size
  d)   small number of progeny with large size

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12) Animals that can move from fresh water to sea called as
  a)   Stenothermal
  b)   Eurythermal
  c)   Catadromous
  d)   Anadromous

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13) Some organisms are able to maintain homeostasis by physical means........
  a)   Conform
  b)   Regulate
  c)   Migrate
  d)   Suspend

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