Female gametophyte form in angiosperms
How is female gametophyte formed in the angiosperms?
Expert
In the flower ovary there are megasporangia enclosed by tegument containing a small opening, micropyle. In megasporangium there is the megasporocyte, or megaspore mother cell, which undergoes meiosis forming four megaspores of which three moves back and only one is functional. Functional megaspore undergoes (three) mitosis generating eight cells that as a whole form embryonic sac.
Give a brief explanation of the term crossing over. And also write down the name of period of meiosis in which this event takes place?
State some of the tissues which form the skin in the vertebrates?
What are the diseases of connective tissue? Describe some of them.
Describe main treatments of diabetes mellitus?
Write down the main particular constituents of cell walls in bacteria, protists, fungi and in plants?
What are pericardium, pleura and peritoneum?
Explain the germ layer from which do the epidermis and nervous system originates? Which are other organs and tissues made up of that germ layer?
Explain whether there is a exchange of the cells between mother and fetus through the placenta?
How does alkalosis is corrected through the breathing process?
They behave differently to different stimuli because of a multitude of factors. These include an individual's age, sex, education, intelligence, personality, physical characteristics, experience, values, and family and cultural background. For instance, a young railway ticket collector would beha
18,76,764
1959498 Asked
3,689
Active Tutors
1458967
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!