Types Of Asexual Reproduction
What are the types of asexual reproduction?
Types Of Asexual Reproduction
In this method, a single parent produces offspring without the involvement of sex cells and gametes which are identical to each other and are also similar to their parents. This process is very common in unicellular organisms and is said to be the simplest type of reproduction
Example – Binary fission in Amoeba, budding in hydra, spore formation in rhizopus, fungus and vegetative propagation in flowering plants like rose, etc.
Characteristics of asexual reproduction.
• It is a rapid mode of multiplication
• Cell division takes place either mitotically or amitotically.
• The new individual produced after cell division is always genetically identical to the parents, that as clone
• A single parent is involved that is of the opposite sex and does not involve
• It does not involve the fusion of gametes.
The mode by which various organisms reproduce depends on the body design of the organism.
1) Fission – It is defined as the splitting of a unicellular organism into two or more than two separate daughter cells. It is the most common and simplest method of sexual reproduction in unicellular organisms such as bacteria and protozoa. It is a division of an organism into two or more parts during cell division, which develop into a whole new organism. Fusions are of two types.
a) Binary Fission – In this method, the parent organism divides into two identical daughter organisms with a definite orientation. At first, the nucleus divides automatically into two, followed by the division of the cytoplasm and finally to the splitting of parent all into two daughter cell. Binary fission can be seen in organisms such as Amoeba, paramecium, euglena, etc.
b) Multiple Fission – In this method, the parent organism divides into many identical daughter organisms. The nucleus of the cell splits rapidly to form many smaller nuclei, which are called daughter nuclei, surrounded by a little bit of cytoplasm and a thin membrane around them. New daughter cells are formed from a single parent cell within the cyst and in favourable conditions. The cyst bursts, and the daughter cells are released, each forming a new organism. Multiple fusions can be seen in organisms such as plasmodium, monocytes, etc.
2) Fragmentation – It is a form of asexual reproduction in which multicellular organisms like filamentous algae break up into two or more small fragments or pieces. on maturing each of which subsequently grows to form a complete new organism. Multicellular organisms cannot divide cell by cell and therefore need a complex way of reproduction.
3) Regeneration – Many organisms like Hydra and planaria can be renewed into a complex individual from a single segment. That is a fully differentiated organism that can give rise to individual organisms from its body parts. This growth of a whole new organism from just a broken or cut part is termed as regeneration. Regeneration is carried out by specialised cells that proliferate and make a large number of cells. From this mass of cells, different cells change to become various cell types. These changes take place in an organised sequence known as development.
4) Budding – In budding, a daughter organism is formed from a small projection known as a bud, which develops as an outgrowth. Due to repeated cell division on the parent body and later detaches to grow into a new independent division. Hydra is a multicellular organism that uses regenerative cells for production in the process of budding.
5) Spore formation – In many multicellular organisms, sporongia-like structures are the reproductive organ that contains spores. The living cell of a spore can germinate and give rise to a new colony. This type of reproduction occurs in bacteria, algae, fungi, Ferns, and mosses. For example, in rhizopus thread-like projection called hyphae if moist bread is kept for a few days as a source of rhizopus present in the air settle down on the bread and germinate to form a new colony. The spores are covered by a thick wall that protects them until they come into contact with some more surface like soil, and can begin to grow.
– Written By Aruja
Reproduction is the process by which the organism produces its young ones of similar kinds. Reproduction is the process by which parent organisms give birth to their child. There are two types of reproduction: sexual and asexual
In sexual reproduction, there is the involvement of gametes from both parents. For example, human beings are produced sexually. The gametes from the male and female are sperm and egg. During fertilization these gametes mix, and hence, the child is developed. Also the child is developed is not as like parents.
But in asexual reproduction, there is no involvement of gametes, and the child is produced by various methods like
Binary fussion
Fragmentation
Clonning
Vegetative reproduction, etc.
The new clone formed is an exact copy of the parent, and it is generally very difficult to identify the parent or children
Examples of asexual reproduction: Amoeba, euglena, etc
Hope you will be satisfied with my answer.
Thank you!!
– Written By Sakchi Srivastav
Responses