What are the reproductive organs of angiosperms?

Excretion tool in the form of protonephridia, in the form of branched channels that ends in a flame bulb or flame cell. The fire cell is shaped like a light bulb in which there are several cilia. The rest of the metabolism in the form of ammonia which is released diffusion through the body surface.

Angiosperms have generative breeding genitals in the form of flowers. Complete flowers are flowers made up of flower petals, petals, stamens, and pistils. The parts of flowers that function as reproductive organs are the stamens (male organs) and pistils (female organs).

Stamens consist of anthers and anthers (filamentus). Inside the anthers are anthers (microsporangium) which contain microspores stem cells. Microsporangium stem cells will divide by meiosis into four microspores and continue to divide meiosis repeatedly and produce pollen (male gametophyte) wrapped in the outer membrane (exin) and inner membrane (intin). Inside pollen there are generative nuclei and vegetative nuclei (reed cells). The generative nucleus will form 2 sperm cells if fertilization occurs.

Pistil or pistilum consists of the head of the pistil (stigma), stalk pistil (stylus) and ovary (ovary). The part of the pistil that plays a role in reproduction is the ovary. Fruit will be part of an enlarged pistil and is located in the middle of the base of the flower, in which there will be seeds (megasporangium) or the content of the institution (ovulum). The seeds will be composed of seed skins (integumentum), seed seeds, (nuselum) and burrow seeds (micropiles).

Seed will (megasporangium) in it there are megaspora stem cells (institutional biological stem cells) which will divide by meiosis into 4 megaspora cells (n). Three cells degenerate, one cell develops into the nucleus of the primary institution. Furthermore, mitosis will divide into two. One cell, to the kalaza and the other to the micropyle.

Arriving at the kalaza and micropyle, the cell divides mitosis twice, resulting in 4 nucleus nuclei cells. One nucleus from the kalaza and micropyle to the middle will form the antipode of the prospective biological institution (2n). The three cell nuclei in the kalaza will then form antipodes. Meanwhile, one cell in the middle in the antipode will become an ovum and the clamp is called a synergid cell.

The function of the female part is to catch pollen and deliver sperm in the pollen to the egg waiting to be fertilized. They also house eggs.
  1. Carpels are the main female part. A carpel is actually three parts merged into one: stigma, crown, and ovary.
  2. Stigma is the top part of the carpal. It is sticky to catch pollen.
  3. Crowns are long tubes that attach stigma to the ovaries. Pollen will eventually slide down the tube to fertilize the egg.
  4. The ovary is at the end of the crown. This is where the ovaries or eggs are waiting to be fertilized. The ovary will mature after fertilization and form fruit to guide the newly formed seed in the next step of its journey.

The function of the male part of the flowering plant is to produce pollen. Pollen contains sperm, which will fertilize the egg and make seeds to grow the next generation of plants.
  • The main part of males is stamens. It is divided into two parts: anther and filament.
  • Antera produces pollen that contains the sperm needed for fertilization.
  • Filaments support anther.

Angiosperms pollination is the event of pollen falling on the pistil's head. Furthermore pollen conducts the acquisition from the surface of the pistil's head and germinates to form a powder reed which starts with the breakdown of exin and extends the intin to the micropyle guided by the vegetative core. The generative nucleus in the pollen reeds will divide into two sperm cells.

When it touches the micropyle, the vegetative cell will degenerate to open the micropyle, and then one sperm enters the micropyle to fertilize the ovum to fertilize the zygote (2n) and the second sperm fertilizes the prospective secondary institution into endosperms (3n). Endosperms function as food reserves. This fertilization is called double fertilization because it is fertilized twice.

Covered seed plants include small edging plants, bushes, and shrubs so that large trees soar high. His life is annual, annual and succulent. Plants that live in dry areas, adapt to reduce leaves, for example cactus.

Its reproduction takes place generatively with seeds and vegetatively both naturally and artificially. This plant life cycle is almost similar to the life cycle of open seed plants with little variation.