The first step of reproduction is called fertilization. Consider the ...
The first step of reproduction is called fertilization. Consider the following statements regarding reproduction of organisms:
Statement 1: The fusion of sperms and ovum is called fertilization.
Statement 2: Fertilization in all oviparous animals occurs outside the female body.
Answer:
The correct answer is option 'A' - 1 Only.
Explanation:
Let us analyze each statement:
Statement 1: The fusion of sperms and ovum is called fertilization.
Fertilization is the process by which the male and female gametes (sperm and ovum) fuse together to form a zygote. It occurs in the reproductive organs of organisms and is the first step in sexual reproduction. During fertilization, the sperm penetrates the egg and fuses with its nucleus, combining their genetic material. This fusion results in the formation of a zygote, which is the first cell of the new individual.
The statement is correct as it accurately describes the process of fertilization.
Statement 2: Fertilization in all oviparous animals occurs outside the female body.
Oviparous animals are those that lay eggs. In some oviparous animals, such as birds and reptiles, fertilization occurs internally, inside the female's body. These animals have specialized reproductive organs where the male deposits sperm, which then fertilizes the eggs before they are laid.
However, in many other oviparous animals, such as most fish and amphibians, fertilization occurs externally, outside the female's body. The female releases the eggs into the environment, and the male then releases sperm to fertilize them. This type of fertilization is known as external fertilization.
Therefore, the statement is incorrect as fertilization in all oviparous animals does not occur outside the female body. It depends on the specific reproductive strategy of the organism.
To summarize, only Statement 1 is correct. Fertilization is the fusion of sperms and ovum, while the occurrence of fertilization inside or outside the female body depends on the reproductive strategy of the organism.
The first step of reproduction is called fertilization. Consider the ...
- Sperm and ovum, both are examples of single celled bodies. The fusion of both is called fertilization, the result of which is the formation of zygote. The cells of zygote divide continuously, to form a ball of cells, after which, the cells differentiate and divide into tissues and organs. This is called an embryo.
- The embryo undergoes development after being implanted on the wall of the uterus. The stage of embryo development, wherein all the body parts are distinguishable, is called foetus. Animals which give birth to offspring are called viviparous; and the ones which develop through eggs are called oviparous.
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