Biological Reproduction

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.

Meiosis does not occur during asexual reproduction. Meiosis is the process of producing gametes which is occur in sexual reproduction. On the other hand, mitosis is simply the process of cell division in asexual reproduction. This is the process that animals are going through during regeneration. 

Tuber, Offset and Conidia are asexual spores while Zoospore, Pollen and Zygote are sexually produced.

Development of an organism from non-sexual reproductive units like buds fragments etc is called blastogenesis. In asexual reproduction there is no formation and fusion of gametes.

Asexual reproduction is a type of reproduction which involves a single parent. The offsprings are genetically identical to each other and to the parent. All prokaryotes and some eukaryotes reproduce this way. Sexual reproduction involves two parents. In sexual reproduction, parents produce reproductive cells—called gametes—that unite to form an offspring. Sexual reproduction is by far the most common life cycle in eukaryotes, for example, animals and plants.

In binary fission, parent cell divides into two equal halves called daughter cells. Daughter cells are identical to each other and to their parent cell. Organisms like the amoeba, bacteria, euglena, etc. exhibit binary fission. During multiple fission, the organism divides itself into numerous daughter cells.