21Which vitamin helps in clotting of blood?AVitamin CBVitamin ACVitamin KDVitamin B12View AnswerDiscussWorkspaceReportSaveEasy
22Which organelle contains the genetic material of a cell?ANucleusBCell wallCLysosomeDRibosomeView AnswerDiscussWorkspaceReportSaveEasy
23Rickets in children is caused by deficiency of:AVitamin EBVitamin DCVitamin ADVitamin KView AnswerDiscussWorkspaceReportSaveEasy
24The study of plants is called:ABotanyBMycologyCEcologyDZoologyView AnswerDiscussWorkspaceReportSaveEasy
25Which blood cells fight infection?APlateletsBPlasmaCRed blood cellsDWhite blood cellsView AnswerDiscussWorkspaceReportSaveEasy