Question

Which among the following is not correct about Arthropods?

(a) Their body consists of three parts, namely, head, thorax and abdomen

(b) Their respiratory organs can be either lungs or gills

(c) Their digestive system is complete with mouth, esophagus, intestines and rectum

(d) They have a heart and blood vessels to supply blood to the organs of the body

The question was posed to me in an interview.

The above asked question is from Classification of Animal Kingdom into Different Phylum-3 in chapter Animal Kingdom of Biology – Class 11

Answer 1

Correct answer is (d) They have a heart and blood vessels to supply blood to the organs of the body

Explanation: Arthropods consist of three parts, namely, head, thorax and abdomen. Their respiratory organs can be either lungs or gills. Their digestive system is complete with mouth, esophagus, intestines and rectum. Their circulatory system is of open type i.e. they don’t have either heart or blood vessels to supply blood to the organs of the body.