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Organisms And Populations

Question
CBSEENBI12002783
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Annual migration does not occur in the case of

  • salmon

  • siberian crane

  • salamander

  • arctic tern

Solution

C.

salamander

Salamonder is semiterrestrial lizard-like tailed amphibian lives under stones, logs and inside crevices. They show hibernation.
Salmon anadromous i.e., they spend their adult lives at sea but return to fresh water to spawn.  The pacific species is legendary after migrating downstream as a smolt a sockeye salmon ranges many hundreds of miles over the pacific for nearly four year and than returns to spawn in the head waters of its parent stream.
Migration tern travels about 1100 miles during winter and return back during summer.

Some More Questions From Organisms and Populations Chapter

The number of births during a given period in the
population that are added to the initial density is 

 :

The departure of a individual from a population is called :

In which interaction only one species is benefitted while the other species is neither harmed nor benefitted ?

Which of the following interaction both species suffer ?

In which of the following interaction both species are benefitted ?

Fill in the blanks with suitable words :

1. The optimal capacity of the organism to produce offspring is called........................

2. Rapid increase in human population is called........................

3. Mathematical expression of the growth of population is called........................

4. Yeast cells grown in a culture medium show........................growth curve.

5. Main cause of population explosion is........................

State true or false :

Coin one word for the following statements :

1.Organism that can tolerate only a narrow range of salinity.

2. Plants that can survive a wide range of temperature.

3. Interaction of two species in which one is benefited while other is neither benefited nor harmed.

4. Number of births during a given period in the population that are added to the initial density.

5. the process of maintaing a constant body temperature.

A few organisms can tolerate and thrive in a wide range of temperature, they are called........................

Majority of organisms are restricted to a narrow range of temperature, such organisms are called ........................ 

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