Hello Kanak,
NEET syllabus for Biology include topics from Class 11th and Class 12th. In the unit 'Structural Organisation in Plants and Animals' there is a topic Animal tissues which will consist of  Morphology, anatomy and functions of different systems (digestive, circulatory, respiratory, nervous and reproductive) of an insect (cockroach). (Brief account only).
You can check the complete syllabus using the link below-

 https://images.careers360.mobi/sites/default/files/NEET-2019-Syllabus-Biology.pdf

Good Luck!

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