What type of interaction exists between the wasp and the fig tree?

Louse is an ectoparasite of

The interaction between "Cuckoo and Crow" is an example of:

Which of the following is an example of a defense used by plants against herbivores?
$I.$ Production of caffeine,tannin,quinine
$II.$ More production of non-woody tissues
$III.$ Production of hairs,thorns,spines
$IV.$ Production of hormone-like chemicals that interfere with insect metamorphosis
Select the correct pair.

$A$ plant growing on another plant without drawing any nourishment is

Select the correct match.

$(I)$ Interaction	$(II)$ Effect
$(a) (+, -)$	$(P)$ Amensalism
$(b) (-, -)$	$(Q)$ Commensalism
$(c) (-, 0)$	$(R)$ Predation
$(d) (+, 0)$	$(S)$ Competition