How many of the following statements are wrong
I. Ginkgo is having only one type of branches
II. Ginkgo has simple leaves
III. Ginkgo has coralloid roots
IV. Ginkgo is the tallest gymnosperm
Ginkgo has simple leaves, it is not having coralloid roots, it has both dwarf and long branches and it is not the tallest among the gymnosperms. Sequoia is one of the tallest gymnosperms.