Proper explanation of reproduction with pictures
Answers
Answer:
Explanation:
“Reproduction is the process of producing offsprings that are biologically or genetically similar to the parent organism.”
What is Reproduction?
Reproduction means to reproduce. It is a biological process by which an organism reproduces an offspring who is biologically similar to the organism. Reproduction enables and ensures the continuity of species, generation after generation. It is the main feature of life on earth.
Let us have a detailed overview of reproduction, its types and the modes of reproduction in plants and animals.
Types of Reproduction
There are basically two types of reproduction:
Asexual Reproduction
Sexual Reproduction
Asexual Reproduction
“Asexual reproduction refers to the type of reproduction in which only a single organism gives rise to a new individual.”
Asexual reproduction does not involve the fusion of gametes, and therefore, the offsprings produced are genetically identical to the parent. The organisms produced by asexual reproduction are less diverse in nature. This type of reproduction is practised widely by unicellular organisms.
The process involves rapid population growth and no mate is required for the process. However, a lack of genetic diversity makes the organisms more susceptible to diseases and nutrition deficiencies.
Asexual reproduction is further divided into:
Binary Fission: In this, the cell splits into two each cell carrying a copy of the DNA from the parent cell. For eg., amoeba.
Budding: In this, a small bud-like outgrowth gives rise to a new individual. The outgrowth remains attached to the organism until it is fully grown. It detaches itself as lives as an individual organism. For eg., hydra
Fragmentation: In this, the parent organism splits into several parts and each part grows into a new individual. For eg., Planaria
Sporogenesis: In this type of reproduction, a new organism grows from the spores. These can be created without fertilization and can spread through wind and animals.
Answer:
Human reproductive system, organ system by which humans reproduce and bear live offspring. Provided all organs are present, normally constructed, and functioning properly, the essential features of human reproduction are (1) liberation of an ovum, or egg, at a specific time in the reproductive cycle, (2) internal fertilization of the ovum by spermatozoa, or sperm cells, (3) transport of the fertilized ovum to the uterus, or womb, (4) implantation of the blastocyst, the early embryo developed from the fertilized ovum, in the wall of the uterus, (5) formation of a placenta and maintenance of the unborn child during the entire period of gestation, (6) birth of the child and expulsion of the placenta, and (7) suckling and care of the child, with an eventual return of the maternal organs to virtually their original state.
Explanation: