Question

exine and intine are the parts of ​

Answer 1

Answer:

exine and intine are the two wall layer of the male gametophyte of a flower

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Answer 2

Exine and intine are the parts of two wall layers of the pollen grain.

• The male reproductive structure, the androecium contains pollen in the sac-like structure called anthers. Each anther is made up of four structures containing four microsporangia, two in each lobe.
• Microsporangia develop further into pollen sacs. They extend throughout the anther's length and are filled with pollen grains.
• The pollen grains represent the male gametophytes.
• The pollen grain has a diameter of around 25-50 micrometers. It has a recognizable two-layered wall.
• The outer layer is called the exine, composed of sporopollenin.
• The inner, continuous wall composed of cellulose and pectin is known as intine.