Question

Match List I with List II: 

	List I (Interaction)		List II (Species A and B)
A.	Mutualism	I.	+(A), O(B)
B.	Commensalism	II.	–(A), O(B)
C.	Amensalism	III.	+(A), –(B)
D.	Parasitism	IV	+(A), +(B)

Choose the correct answer from the options given below:

• A. A-IV, B-I, C-II, D-III
• B. A-IV, B-III, C-I, D-II
• C. A-III, B-I, C-IV, D-II
• D. A-IV, B-II, C-I, D-III

Answer 1

The Correct Option is A

To accurately match List I (types of interactions) with List II (effects on species A and B), let's define each interaction and its corresponding effect:

• Mutualism: Both species benefit from the interaction. Thus, the correct effect is +(A), +(B). Therefore, A-IV.
• Commensalism: One species benefits while the other is neither helped nor harmed. This matches +(A), O(B). Therefore, B-I.
• Amensalism: One species is harmed while the other is unaffected. This corresponds to –(A), O(B). Therefore, C-II.
• Parasitism: One species benefits at the expense of the other, which is harmed. This correlates to +(A), –(B). Therefore, D-III.

By analyzing these definitions and their effects, the correct matching is:

• A-IV: Mutualism - +(A), +(B)
• B-I: Commensalism - +(A), O(B)
• C-II: Amensalism - –(A), O(B)
• D-III: Parasitism - +(A), –(B)

Thus, the correct option is:

A-IV, B-I, C-II, D-III