$Cuscuta$ is an example of

$A$ cuckoo laying eggs in the nest of other species of birds,is an example of

Name the term used to describe a single dominant species that dictates community structure.

If $'+'$ sign is assigned to beneficial interaction,$'-'$ sign to detrimental and $'O'$ sign to neutral interaction,then the population interaction represented by $'+, -'$ refers to

Match List $I$ with List $II$ :

List $I$ (Interaction)	List $II$ (Species $A$ and $B$)
$A$. Mutualism	$I$. $+(A), 0(B)$
$B$. Commensalism	$II$. $-(A), 0(B)$
$C$. Amensalism	$III$. $+(A), -(B)$
$D$. Parasitism	$IV$. $+(A), +(B)$

Choose the correct answer from the options given below:

Discuss the various types of positive interactions between species.