Solution:
Chlamydomonas, Chlorella and Volvox have cup shaped chloroplast. Ulothrix has girdle shaped chloroplast. Spirogyra has ribbon like chloroplast. Caulerpa has discoid chloroplast and Hydrodictyon has reticulate chloroplast.
Find the incorrect match w.r.t. shapes of chloroplast in algae
Chlamydomonas, Chlorella and Volvox have cup shaped chloroplast. Ulothrix has girdle shaped chloroplast. Spirogyra has ribbon like chloroplast. Caulerpa has discoid chloroplast and Hydrodictyon has reticulate chloroplast.