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A sedentary sea anemone gets attached to...

A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is

A

commensalism

B

Amensalism

C

Ectoparasitism

D

symbiosis

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The correct Answer is:
A
Some authors have called this association Mutualism (Symbiosis), some called it Protocooperation while some others say it is Commensalism . This (a ) and (d) are both correct.
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Name the interaction in each of the following: (a) Cuckoo lay: her eggs in the crew’s nest. (b) Orchid grows on a mango tree. (c) Ticks live on the skin of doze. \ (d) Sea anemone in often found on the shell of hermit crab?

A ball of mass in m= 1 kg is hung vertically by a thread of length l = 1.50 m . Upper end of the thread is attached to the ceiling of a trolley of mass M= 4 kg . Initially, the trolley is stationary and it is free to move along horizontal rails without friction. A shell of mass m=1 kg, moving horizontally with velocity v_(0) = 6 m//s collides with the ball and gets stuck with it. As a result, the thread starts to deflect towards right. The velocity of the combined body just after collision is

A ball of mass in m= 1 kg is hung vertically by a thread of length l = 1.50 m . Upper end of the thread is attached to the ceiling of a trolley of mass M= 4 kg . Initially, the trolley is stationary and it is free to move along horizontal rails without friction. A shell of mass m=1 kg , moving horizontally with velocity v_(0 )= 6 m//s collides with the ball and gets stuck with it. As a result, the thread starts to deflect towards right. At the time of maximum deflection of the thread with vertical, the trolley will move with velocity

A ball of mass in m= 1 kg is hung vertically by a thread of length l = 1.50 m . Upper end of the thread is attached to the ceiling of a trolley of mass M= 4 kg . Initially, the trolley is stationary and it is free to move along horizontal rails without friction. A shell of mass m=1 kg , moving horizontally with velocity v_(0) = 6 m//s collides with the ball and gets stuck with it. As a result, the thread starts to deflect towards right. The maximum deflection of the thread with the vertical is

What type of relationship exists between sea anemone and hermit crab .

The relationship between sea-anemone and hermit crab is called protocooperation.

A: The interaction between sea anemone and down fish is commensalism. R: The fish gets protection from predators but anemone does not appear to derive any benefit.

TRUEMAN BIOLOGY-ORGANISMS AND POPULASTIONS -Multiple Choice Questions
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  2. Adapative measure to protect against extreme heat by poikilotherms is

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  3. A sedentary sea anemone gets attached to the shell lining of hermit cr...

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  4. A biologist studied the population of rats in a barn. He found that th...

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  5. Just as a person moving from Delhi to Shimla to escape the heat for th...

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  6. A location with luxuriant growth of lichens on the trees indicates tha...

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  7. An association of individuals of different species living in the same ...

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  8. Most animals that live in deep oceanic waters are:

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  9. In which of the following interaction both partners are adversely affe...

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  10. Gause's principle of competitive exclusion states that:

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  11. When does the growth rate of a population following the logistic model...

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  12. Which of the following is correct for r-selected species ?

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  13. If '+' sign is assigned to benefited interaction '-' sign to detriment...

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  14. The principle of competitive exclusion was stated by

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  15. Asymptote in a logistic growth curve is obtained, when

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  16. Plants, which produce characteristic pneumatophores and show vivpary...

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  17. Which one fo the following population interactions is widely used in m...

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  18. In a growing population of a country ,

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  19. Which one of the following plants shows a very close relationship with...

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  20. Natality refers to

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