Question 4
Pitcher plant traps insects because it
(a) is a heterotroph.
(b) grows in soils which lack in nitrogen.
(c) does not have chlorophyll.
(d) has a digestive system like human beings.
The answer is option (b).
Insectivorous plants such as pitcher plant tend to grow in places where the soil is thin or lack in nutrients. So these plants get nutrients by trapping and digesting animals, especially insects.