MCQ PracticeIn which of the following kind of xylem vessels, the secondary wall thickenings are transverse interconnected bars?Subject: BiologyTopic: Plant KingdomAAnnular vesselsBSpiral vesselsCScalariform vesselsDAll of the aboveCorrect Answer: CPractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the