Tag: different modes of reproduction

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.