ORGANISMS AND POPULATION biology MCQ’s questions answers

 

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ORGANISMS AND POPULATION

Question 1
X= Arthropods, Y = Mollusca, z = Coelenterates :-If the X by using Y, lives benifical life with z, then which of the following is correct example?
A
X = cockroachY = pearl oyester Z = Hydra
B
X = Millipede Y = pila Z = jellyfish
C
X = Hermit crab Y = Gastropoda Z = sea anenone
D
All of these
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Question 2
"Spiny lizard" absorbs water from the atmosphere which is appropriate similar functional option for the statement?
A
Tongue of Human
B
Hygroscpic roots of orchid
C
Roots of plants
D
None of these
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Question 3
Consider the following four statements (A-D) about certain desert animals such as kangaroo rat
  1. they have dark colour and high rate of reproduction and excrete solid urine
  2. they do not drink water, breathe at slow rate to conserve water and have their body covered with thick hairs
  3. they feed on dry seeds and do not require drinking water
  4. they excrete very concentrated urine and do not use water to regulate body temperature
Which two of the above statements for such animals are true?
A
C and D
B
B and C
C
C and A
D
A and B
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Question 4
An organism which lives at the expense of another organism is called
A
predator
B
prey
C
host
D
parasite
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Question 5
In cold blooded animals, the body temperature tends to match with the environmental temperature in which they live. They are also known as:
A
Ectotherms.
B
Endotherms.
C
Warm blooded animals.
D
Both (B) and (C).
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There are 5 questions to complete.

 

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