Asexual reproduction is a common method of reproduction by which offspring arise from a single parent and inherit the genes of that parent only. An important form of fission (a type of asexual reproduction) is binary fission, where the parent organism is replaced by two daughter organisms. Only prokaryotes (the archaea and the bacteria) reproduce asexually through binary fission. Eukaryotes (unicellular fungi) may reproduce in a functionally similar manner by mitosis. Multiple fission at the cellular level occurs in many protists, e.g. algae. The nucleus of the parent cell divides several times by mitosis, producing several nuclei. The cytoplasm then separates, creating multiple daughter cells.

Sexual reproduction involves both meiosis and mitosis. Meiosis occurs at the time of gamete formation. Repeated mitotic divisions occur in the zygote to form an embryo.

Binary fission is a method of separating a body into two new bodies. In this process, an organism duplicates its genetic material and divides into two parts where every new organism receives one copy of DNA. 

Haploid-diploid mechanism or Haplodiploidy is a unique phenomenon in which an unfertilized egg develops into a male and a fertilized egg develops into a female. Therefore, the female is diploid (2n), and the male is haploid (n). Eggs are formed by meiosis and sperms by mitosis. Fertilization restores the diploid number of  chromosomes in the zygote which gives rise to the female, If the egg is not fertilized, it will still develop but into a male (arrhenotoky or arrhenotokous parthenogenesis). It is seen in hymenopterous insects, such as bees, wasps, saw flies and ants. So, the correct answer is 'Honeybees, ants and wasps'.

(i) sexual reproduction does not require two individuals because the fusion of two gametes released from the same plant can take place.

The panmictic plant is a plant which has immense potential to breed. It undergoes random meeting which has no mating restrictions, neither genetic nor behavioural. The mating takes place by sexual reproduction. Due to mating by sexual reproduction, recombination takes place and eventually, leads to genetic variation. It causes the change in the genetic pool.

Sexual reproduction is a biological process that creates a new organism by combining the genetic material of two organisms, by the fusion of one gamete from each. Motile male gamete generally fertilizes with nonmotile female gamete in this process.
Thus, the correct answer is option A.

Sexual reproduction is a form of reproduction where the two reproductive gametes obtained from both the parents fuse together, to form a zygote. The gametes involve a large ovum (or egg) obtained from female and a male's smaller sperm. Each gamete contains half the number of chromosomes of normal cells.

• Reproduction in man is only sexual. After insemination, there is a fusion of sperm and ovum in the oviduct. This process is called fertilization. After fertilization, implantation takes place in the uterus and the development and the growth of the fetus occurs there.

The type of reproduction in which no gametes are involved and the new organisms emerge from a single parent only is called asexual reproduction. There is no fusion of gametes in asexual reproduction and the chromosome number also remains constant. Various types of asexual reproduction include division, budding, spore formation, etc.

Apospory is the development of gametophyte without meiosis forming haploid spores. 

Sexual reproduction is a characteristic of most of the higher life forms. Sexual reproduction characteristically involves reduction division or meiosis to form haploid cells and syngamy or fertilisation to form a zygote. Asexual reproduction is a means of reproduction without involving meiosis or fertilization. Most of the unicellular organisms show asexual reproduction. Vegetative reproduction is a type of asexual reproduction. The term vegetative reproduction is used in the context of plants only. Plants propagate rapidly through vegetative propagation. For example, suckers, rhizomes, runners etc.

Sexual reproduction involves the formation of haploid gametes. The gametes are produced by a specialised type of cell division called meiosis. The meiosis is a special type of division because it is reductional division and it involves crossing over. The crossing over involves the exchange of chromosomal segments between non-sister chromatids of a homologous pair of chromosome. The crossing over results in new genetic combinations. The rearrangement of genetic material every time crossing over occurs produces new combinations thus leading to the generation of variations in a sexually reproducing population.

• Sexual reproduction involves the formation and fusion of gametes.
• This requires formation of gametes with meiosis in diploid organisms or meiosis taking place in zygote if the organism is haploid. 
• Due to meiosis, only 50% of the genetic material is passed to the next generation and fusion of gametes results in a unique combination of the genome. 
• While asexual reproduction results in offsprings with exact genetic material as their parent reducing chances of variations.

• Reproduction is the process by which new individual organisms or 'offsprings' are produced from their 'parents' and thus, 
• it is a fundamental feature of all known life, each individual organism exists as a result of 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.

There are harmful and toxic chemicals present in the mosquito repellents and coils like the pyrethrum. These molecules when inhaled may cause diseases like asthma, bronchitis and another type of chronic lung infections. These are collectively referred as the bronchial diseases. 

Flowers contain the reproductive structures: stamens (male) and carpels (female). Stamens produce pollen grains, which contain two sperm cells, while carpels contain the egg cells. Seeds develop following pollination and fertilization (fusion of the male and female gametes). So the correct option is "Flower".

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".

A group of organisms, genetically related with one another and are formed from a single parent by means of asexual reproduction. In the genetic clone, all progeny are morphologically and genetically related with one another.

So, the correct answer is 'plants produced by asexual means’

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’

Scattering of seeds ensures the spread of species over the maximum area which protects it and it also prevents the growth of the same plant at one place and reduces the competition of food and other resources hence reduces competition and over-crowding.

• 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.

When the tip of the seedlings was covered with agar gel and is placed on seedling, The hormones which were later found to be auxins move from base to the apex. Thus the growth of the seedling was in the direction of more concentration of agar. As they were kept in dark, there was no light for growth so the seedlings have taken agar gel as the source of growth. While in those seedlings whose tips were again placed back on seedling or drop of water was placed on top of each seedling, growth does not occur as there is no medium for growth.

• In sexual reproduction, two individuals are involved and there is the genetic exchange between the male and female. 
• As there is an exchange of genetic material, the offspring, won't have exactly the same material as either of his parents. 
• There will be a different genetic content of each offspring, every time. As a result, there is no genetic sameness instead, sexual reproduction leads to variation.

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.

During gamete formation, there is meiosis in which mother cell divides into 4 cells having a half number of chromosomes. In fertilization, male and female gametes fuse to form a zygote having the same number of chromosomes as parents. Hence, the number of chromosomes remains constant.

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.

The fertilization which takes place inside the female's body is called internal fertilization, hen shows internal fertilization.
The fertilization which takes outside the female's body is called external fertilization as in the case of frogs.
Sperm is the male reproductive cell or the male gamete.
Ovum is the female reproductive cell or the female gamete.
Budding is a form of asexual reproduction in which a new organism develops from an outgrowth or bud due to the cell division at that particular site as in case of hydra.
Binary fission is a form of asexual reproduction used by all prokaryotes (including amoeba) where the cell divides into two nearly equal-sized daughter cells.
A zygote is a diploid cell that is formed by the fusion of male and female gamete. So, the fertilized egg is the zygote.
Thus, the correct answer is option C.

Seed is the product of ripened ovule after fertilization by pollen grains. These seeds further grow into a new plant. Some plants are reproduced without forming seeds but through the asexual reproduction. New sugarcane plants are produced from a mature sugarcane stem, rose from branch and potato from another potato. 

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. 

Gametes are the cells that merge with each other to create a unique organism during sexual reproduction. Gametes are the reproductive cells used to make a new organism called a zygote during sexual reproduction. There are distinct gametes in men and women. The sperm is called the male gamete. It's much lower and very mobile than the female gamete. It has a lengthy tail, flagellum, which makes it possible to move towards the female gamete. The egg or ova is called the female gamete. It's much bigger than the sperm and it's not moving

Unisexual animals have a reproductive structure that is either functionally male or functionally female. In angiosperms, this condition is also called diclinous, imperfect or incomplete. In animals, mostly the sexes are separate i.e. they are unisexual (male & female). For example, dogs, humans, tiger etc.

Monkey and Cat are mammals. They reproduce sexually. Higher animals do not reproduce asexually. Lower animals like Coelenterates reproduce asexually. Thus, the correct answer is option D.

Sexual reproduction in higher organisms is characterized by the formation of haploid gametes and their fertilization. The haploid gametes are produced by meiosis which has a half number of chromosomes as compared to the parent cell. It is also known as the reductional division. The haploid gametes obtained from both the parent fuse to form a diploid zygote. Mitosis is an equational division so it will not lead to the reduction in the chromosome.

The given statement is true. The daughter cells produced by asexual reproduction are similar to their parent i.e., they are genetically identical to their parent. In contrast, sexual reproduction produces a similar but genetically different offspring. In the process of sexual reproduction, haploid gametes produced by the meiotic division fuses to form a diploid zygote. A child inherits half of the genetic material from each parent. So, it may be they look alike but they are not identical to their parents. Instead, the child has the combination of characteristics inherited from both parents. Therefore, we can say that in sexual mode of reproduction, greater diversities are generated.

Greek word sexus means union. It is used in biology in terms of fusion of gametes in plants and animals. The male gametes is known as sperm and the female is known as ovum. Sexual reproduction is the reproduction which is caused by the fusion of gametes. The male and female gametes fuses to form zygote. 

Reproduction refers to the process by which new individual organisms (offspring) are produced from their parent.

Reproduction is the process by which organisms produce offspring that are similar to themselves.

• Cell Division results in two or more daughter cells.
  
• Growth is the irreversible increase in the dry mass of an organism. It is brought about by an increase in cell size or number.
• Reproduction results in production of closely resembling young ones.
• So, the correct option is 'Reproduction'. 

• Reproduction refers to the production or propogation of new individuals by an organism. 
• Syngamy of fertilisation refers to the fusion of gametes which may or may not be similar.
• So, the correct option is 'Reproduction'.

• 'Re' prefix is used to denote 'again'.
• Hence, reproduction word itself means 'again production' of the same type of organisms.
• So, the correct option is 'Reproduction'.

During the process of reproduction, the DNA is passed from one generation to another. This replication takes place with little or no errors. There is consistency which leads to stability of reproduction. Also, reproduction helps in replacing aging population with new population and thus ensures the survival of the species. In the absence of reproduction, one particular species will disappear with time.
Thus, the correct answer is the option (A).