30. Which of the following in not an example of restricted distribution?
(1) Egg laying mammals
(2) Pouched mammals
(3) Double coconut
(4) Archaeopteryx
Answers
Answer:
3 one is not example of restricted distribution.
Explanation:
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Answer:
Correct option - (3) double coconut.
Double coconut is not an example of restricted distribution.
Explanation:
Restricted distribution means the distribution of a particular species is restricted to only a specific area. If they are localized in another area, they cannot adapt and die easily.
(1) Egg-laying mammals - These mammals are mainly found in Australia. They couldn't travel to other continents. Thus, they remain localized to only Australia.
(2) Pouched mammals - These mammals are very limited and found only in Australia. Kangaroo is a great example. Their mortality rate was higher in other parts. Thus, they are restricted only to Australia.
(3) Double coconut - They are monotypic species in the palm family having the biggest seeds. They were once extinct but were again reintroduced. They were originally found in two islands of Seychelles. Britishers introduced them to the parts of India, Sri Lanka, and Thailand. Surprisingly all of them survived. Thus, they are not an example of restricted distribution.
(4) Archaeopteryx - It is a fossil that is believed to be one of the earliest bird species. It had a restricted distribution only in southern Germany.
Thus, only double coconut is not an example of restricted distribution.