Tag: plant reproduction

• Unicellular organisms generally divide by asexual reproduction which involves budding, binary fission, multiple fission, fragmentation, spore formation.
• Multicellular organisms can divide by sexual as well as asexual methods. For example, vegetative propagation in all plants is a means of asexual reproduction while all higher animals reproduce sexually.

• Sexual reproduction is a biological process that creates a new organism by combining the genetic material of two organisms in a process that starts with meiosis. Hence, it is the cause of variation.

Fertilization is a process of fusion of gametes to produce new individual, which is generally the form of sexual reproduction.
Asexual reproduction is a mode of reproduction by which single parent produces new individuals without fertilization. And so in asexual reproduction, fertilization essentially is not required.
Thus, the correct answer is option C.

• Reproduction is the biological process of the production of new individual organisms or 'offsprings' from their parents. 
• It is essential for an organism to ensure its species to survive to the next generation.

• Fertilization is fusion of male and female gamete which is the key step involved in sexual reproduction.
• Asexual reproduction does not involve formation of gametes or fertilization. Here, a single organism can produce offsprings.

For the spread of mold, the presence of moisture and a large number of spores are required. Asexual reproduction is a form of reproduction by which offspring arise from a single organism and inherit the genes of that parent only. It does not involve the formation of gametes. Binary fission is a form of asexual reproduction whereby the parent cell divides to form two daughter cells. Thus, the correct answer is option C.

In asexual reproduction only one parent is involved so there is no fusion of two cells, the daughter cells produced by asexual reproduction are genetically identical to the parent cells variations enable organisms to adopt and survive in changing environment and it helps to prevent the complete extinction of specters. so lack of genetic variation is the disadvantage.
 Whereas rapid reproduction is the advantage of asexual reproduction.

Sexual reproduction involves fusion of the sex cells - the sperm and egg. This fusion leads to mixing of genes of 2 sex cells. The resultant offspring has a mixture of genes from both father and mother. This leads to more genetic variation. In asexual reproduction, there is no mixture of genes. Hence no genetic variation or diversity. Thus, the correct answer is option B.