The correct developmental sequence is :

1. Sporogenous tissue
2. pollen
3. mother cell
4. microspore tetrad
5. pollen grain
6. male gamete.

Developmental Sequence Explanation

The Process

This is how the developmental sequence is in flowers:

• The sporogenous tissue is where the spores are produced
• The pollen mother cell is a type of cell in the sporogenous tissue that will undergo meiosis to produce four microspores
• The microspore tetrad is when the four microspores are together in one structure
• The pollen grain is the mature structure that is released from the plant
• The male gametes are the sperm cells that are produced by the pollen grain.

Seed Formation

Then, the male gametes will travel to the female gametes to fertilize them and create a seed. This is the process of pollination in flowers.

Sexual reproduction in flowering plants is more complex than in other types of plants. The sequence described above is the most common way that it occurs.

This developmental sequence is also known as the anther wall developmental sequence. The anther wall is the part of the flower where the pollen is produced.

The shape and structure of the anther wall change as the pollen develops.

The four cell layers that make up the wall are

1. The epidermis is the outer layer that is closest to the petals
2. The endothecium is a layer of cells that surround the microspores
3. The middle layer is called the mediagen and it contains the cells that will divide to form the microspores
4. The inner layer is called the tapetum and it provides nutrients to the spores.

Summary

First, the sporogenous tissue produces the spores. Then, the pollen mother cell undergoes meiosis to produce four microspores.

The microspore tetrad is when the four microspores are together in one structure. Next, the pollen grain matures and is released from the plant.

Finally, the male gametes travel to the female gametes to fertilize them and create a seed. This is the process of pollination in flowers.