Biological Reproduction

• 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.

Reproduction is broadly categorized into asexual reproduction (involving one parent) and sexual reproduction (involving two parents and gamete fusion). Both are fundamental modes of biological 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.

Sexual reproduction involves the fusion of gametes from two parents, which leads to genetic variation through the recombination of alleles during meiosis. This is a primary advantage of sexual reproduction over asexual reproduction.

When two parents are involved in reproduction, the method is called sexual reproduction. The male and female gametes fuse during fertilization to produce the zygote. The zygote subsequently develops into an embryo which further develops into a new individual. So the correct option is "Reproduction".

The process of formation of offsprings or progeny is called Reproduction. It may be vegetative or asexual or sexual types. The progeny formed by vegetative or asexual methods are looks like parents, but progeny formed by sexual reproduction shows variations with parents.

So, the correct option is ‘All the above’

• Sexual reproduction is a mode of reproduction where new organisms are produced by the exchange of genetic material during fertilization. 
• Vegetative propagation and budding are forms of asexual reproduction and there is no exchange of genetic material in asexual reproduction.

In asexual reproduction, a single parent is involved to produce offsprings by fission, budding, or regeneration. While in sexual reproduction, gametes are produced by both the parents which fuses to form a zygote.
Thus, the correct answer is option D.

Asexual reproduction is a mode of reproduction in which single parent produces offspring and inherit their genes. Asexual reproduction never involves in ploidy or reduction. The offsprings will be an exact copy of their parent and their siblings as well.
Thus, the correct answer is the option C.

In asexual reproduction, the only single parent is involved and progeny develops directly from its parent by cell division, fragmentation, budding, etc. passing the same genes from generation to generations. Thus offspring formed by asexual reproduction have similarities among themselves. 

• Sexual reproduction is a form of reproduction which involves the fusion of male and female gametes to form a zygote in a process called fertilization. Their looks are not exactly like their parents. 
• In sexual reproduction, there is increased variation in the population giving the species a better chance of survival in changing conditions. The offsprings are often more vigorous and flamboyant, meaning they go to great lengths to find a mate.