Question

Q. Consider the following statements

1. Cow dung providing food and shelter to dung beetles is an example of Commensalism.
2. A large tree shades a small plant, retarding the growth of the small plant is an example of competition.

Which of the statements given above is/are correct?


Q. निम्नलिखित कथनों पर विचार कीजिए

1. गोबर भृंग (Dung Beetles) का गाय के गोबर से भोजन और आश्रय प्राप्त करना परजीविता (Commensalism) का एक उदाहरण है।
2. एक बड़ा पेड़ एक छोटे पौधे को छाया देता है, छोटे पौधे की वृद्धि को रोकना प्रतियोगिता का एक उदाहरण है।

ऊपर दिए गए कथनों में से कौन सा सही है / हैं?

• A.
  1 only
  केवल 1
• B.
  2 only
  केवल 2
• C.
  Both 1 and 2
  1 और 2 दोनों
• D.
  Neither 1 nor 2
  न तो 1 और न ही 2

Answer 1

The correct option is A

1 only
केवल 1
Commensalism is defined as the process in which two organisms of different species are present and in which one organism is benefited while the other one acts as a neutral organism. It is neither harmed nor benefitted, hence statement 1 is correct.
Example: cow dung provides food and shelter• to dung beetles. The beetles have no effect on the cows

Amensalism is defined as the process in which two organisms of different species are pre-sent and one organism is inhibited or destroyed while the other organism remains unaffected. A large tree shades a small plant, retarding the growth of the small plant is an example of Amensalism not of competition, hence statement 2 is incorrect.