a) Coconut palm is monoecious, while date palm is dioecious. Why are they so called?
b) Draw a labelled diagram of sectional view of a mature embryo sac of an angiosperm.

Explanation

a) In some flowering plants, both male and female may be present on the same individual, (monoecious) or in separate individuals (dioecious). Some example of monoecious plants are cucurbits and coconuts and of dioecious plants are papaya and data palm,