Directions: In the following questions, a statement of assertion (A) ...
Organisms reproduce for perpetuation of species because individuals have a limited life span. Organisms may reproduce sexually as well as asexually. The sexual reproduction involves formation of haploid gametes through the process of reduction division or meiosis. The haploid gametes fuse during fertilization to form diploid zygote. Thus, restoring the normal ploidy. The asexual reproduction does not involves gamete formation through meiosis or their fertilization. The vegetative propagation in plants is a type of asexual reproduction in which plant body is propagated directly from some vegetative part of adult plant.
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Directions: In the following questions, a statement of assertion (A) ...
Assertion: Asexual reproduction is a primitive type of reproduction.
Reason: Asexual reproduction involves only mitotic cell division.
In this question, we are given an assertion and a reason related to asexual reproduction. We need to determine whether both the assertion and the reason are true and whether the reason is the correct explanation of the assertion.
Explanation:
Asexual reproduction is a type of reproduction in which offspring are produced by a single parent without the involvement of gametes or the fusion of genetic material from two parents. It is commonly found in lower organisms like bacteria, fungi, and protozoa, as well as in some higher organisms like plants and animals.
Asexual Reproduction:
1. Asexual reproduction is a primitive type of reproduction because it is a simple and direct method of producing offspring without the need for specialized reproductive structures or processes.
2. It is an ancient form of reproduction that predates sexual reproduction.
3. Asexual reproduction is advantageous in stable environments where offspring will be similar to the parent and well-adapted to the current conditions.
Mitotic Cell Division:
1. Mitosis is the process of cell division that produces two identical daughter cells from a single parent cell.
2. Asexual reproduction involves only mitotic cell division, where the parent cell divides into two or more daughter cells, each of which is genetically identical to the parent cell.
3. This process ensures that the offspring have the same genetic material as the parent and are clones of each other.
Assertion and Reason:
1. The assertion states that asexual reproduction is a primitive type of reproduction.
2. The reason given for this assertion is that asexual reproduction involves only mitotic cell division.
Explanation of Correct Answer:
The correct answer is option A, where both the assertion and the reason are true, and the reason is the correct explanation of the assertion.
1. Asexual reproduction is considered primitive because it is a simple and direct method of reproduction that does not involve the complexities of sexual reproduction.
2. Asexual reproduction involves only mitotic cell division, which ensures that the genetic information is passed on to the offspring without any variation or recombination.
Therefore, asexual reproduction can be considered a primitive type of reproduction due to its reliance on mitotic cell division and its simplicity compared to sexual reproduction.
Directions: In the following questions, a statement of assertion (A) ...
Option A
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