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Darwin's Finches

Identify the ...

Question

Identify the group of organisms that benefit from each other.

A

1 only

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B

1 and 3 only

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C

1, 2 and 3

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D

2 and 3 only

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Solution

The correct option is B 1 and 3 only
Some animals ride on other animals and benefit one another. Egret sits on the buffalo's back and both benefit from each other. Egret eats the insects that are sticking to the buffalo's skin and gets its food. Buffalo gets rid of germs and insects. Oxpeckers ride on the back of camels or rhinoceros to eat picks, flies, and other bugs.

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Q. On the African plain, large herbivores like black rhinoceros disturb insect communities as they move. Birds like cattle egret feeds on the displaced insects. Neither the displacement of insects nor the activity of birds has any effect on the rhino. Oxpecker (a small dark bird) removes ticks from the skin of the rhino. The bird gets food and the mammals get relief from parasites.
Match the alphabets with the relationship that the organisms possess among themselves and then write only appropriate number in the space against each alphabet.

(1) Predation (2) Parasitism
(3) Commensalism (4) Amensalism
(5) Mutualism (6) Competition

Q. We can see egrets and buffalo together often. How do egrets help buffaloes?

Q. On the african plain, large herbivores like black rhinoceros disturb insect communities as they move. Birds like cattle egret feeds on the displaced insects. Neither the displacement of insects nor the activity of birds has any effect on the rhino. Oxpecker (a small dark bird) removes ticks from the skin of the rhino. The bird gets food and the mammals get relief from parasites.
An outline of these inter-relief from parasites. Match the alphabets with the relationship that the organisms possess among themselves and then write only appropriate number in the space against each alphabet.

(1) Predation (2) Parasitism
(3) Commensalism (4) Amensalism
(5) Mutualism (6) Competition

Q. Given below are some examples of commensalism.
A. Orchid and mango tree
B. Sea anemone and clownfish
C. Cattle egret and grazing cattle
D. Barnacles and whale

Select the option which includes only the organisms benefited from this interaction.

Q. Assertion: In commensalism, one organism is benefitted and other is unaffected
Reason: Cattle egret bird and cattle is an example of commensalism

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