$Unio$ has:

  • A
    One-chambered heart
  • B
    Two-chambered heart
  • C
    Three-chambered heart
  • D
    No heart

Explore More

Similar Questions

In which of the following organisms is the foot displaced to the neighborhood of the mouth and divided into arms?

Which one of the following classes has the maximum economic importance?

Which of the following groups belongs to the Phylum $Mollusca$?

Mantle,foot and shell are the characteristics of

Most molluscs are

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo