Arsenic (As) is a rising threat for plant life and in the current work impacts of arsenate (AsV) on growth, lipid peroxidation and plasma membrane integrity have been evaluated. It was found that AsV deleteriously affected the growth, increased the lipid peroxidation and damage of membrane in Pisum sativum L. seedlings. Although, application of silicon (Si) ameliorates AsV toxicity by restoring growth as well as by decreasing membrane lipid peroxidation and damage.