Male gametophytes and male gametes form in angiosperm
How male gametophytes and male gametes formed in the angiosperms?
Expert
In the anthers of each stamen there are pollen sacs. In the pollen sacs there are microspore mother cells, micro-sporocytes. These cells undergo meiosis forming the microspores. Each microspore by the mitosis forms a pollen grain having one generative cell and one tube cell. The pollen grain is male gametophyte.
When pollination takes place and the pollen grain creates contact with stigma (the apex of pistil) the tube cell elongates its cytoplasm forming pollen tube which grows towards the ovary. The generative cell divides forming two sperm nuclei (or male gametes) which migrate through pollen tube.
Briefly discrive the uses and ill effect of microorganism in the food industry
What is the basic definition of “Biomedical”? What areas cover the Study of Biomedical Sciences?
Give a brief explanation of radial immuno diffusion method.
Write down the binding between two amino acids?
Which region of the brain is responsible for the regulation of the breathing and blood pressure?
Explain about the animal pole and the vegetal pole of vertebrate egg?
How does the poison cyanide act on an aerobic respiration?
Regression Article Instructions: Read an article. Create a 1 page, double spaced summary of the document. Do not copy sentences from the article. It must be your own work. <
Give a brief description of the term blood stem cells?
Write down the differentiation between rough and smooth endoplasmic reticulum.
18,76,764
1934744 Asked
3,689
Active Tutors
1428170
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!