Which of the follwing statements is incorrect?

Options

A. Pollen grains remain viable for several months because their outer coveing is make of sporopollenin
B. No enzyme can degrade sporollenin
C. Pollen grains are well-represented in fossil strata due to sporoollenin
D. Pollen wall has cavities containing proteins

Answer

D

Explanation

Pollen wall comprises of two principal layers, the inner intine and outer exine. The intine is pectocellulosic in nature. A special feature of intine is the presence of beads, ribbons or plates of enzymatic proteins particularly in vicinity of germ pores. THe exine is composed of sporopollenin which is derived from carotenoids by oxidative polymerisation. it is resistant to physical and biological decomposition. Duye to this, pollen walls are often preserved for long periods in fossil deposits.