Question

A mature male gametophyte of angiosperm __________________.

• A. is a very developed structure
• B. Develops completely in pollen sac
• C. Consist of a tube nucleus and two non motile male gametes
• D. Develops on style

Answer 1

The correct option is B Develops completely in pollen sac

• The development of pollen takes place in a structure known as the microsporangium.
• Male gametophyte develops and reaches maturity in an immature anther. The microsporangia, usually bi-lobed, are pollen sacs in which the microspores develop into pollen grains.
• Upon maturation of the pollen, sac walls split open and the pollen grains (male gametophytes) are released,