Question

Which among the following is incorrect about organ system level of organization?

(a) Organs group to form organ systems

(b) Each and every organ system are specialized to perform a specific physiological activity

(c) Annelids exhibit this level of organization

(d) All of these animals have a cavity between their digestive tract and body wall called as coelom

I got this question in examination.

My question is taken from Basis of Classification in Animals topic in division Animal Kingdom of Biology – Class 11

Answer 1

The correct answer is (d) All of these animals have a cavity between their digestive tract and body wall called as coelom

Easiest explanation: Organs group to form organ systems. Each and every organ system is specialized to perform a specific physiological activity. Annelids exhibit this level of organization. Some of these animals are coelomates, few others are pseudo coelomates and others are acoelomates.