Identify the correct adaptations of parasites from the following list:
$a.$ Loss of unnecessary sense organs
$b.$ Presence of adhesive organs
$c.$ Presence of suckers
$d.$ High reproductive capacity
$e.$ Well-developed digestive system
Choose the correct option with respect to parasites.

Study the following four statements $(1-4)$ and select the two which are correct:
$(1)$ Lion eating deer and sparrow feeding on grain are ecologically similar in being consumers.
$(2)$ The predator starfish $Pisaster$ helps in maintaining species diversity of some invertebrates.
$(3)$ Predators often lead to the extinction of prey species.
$(4)$ Production of chemicals such as nicotine and strychnine by plants is a metabolic disorder.
Which two statements are correct?

An association of two species where both the partners derive mutual benefit from each other is known as:

Which of the following interactions is represented by the $(-, +)$ relationship between species $A$ and species $B$ respectively?

Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example.

The phenomenon where organisms resemble other organisms to escape from predators is called .........