Tag: modes of reproduction

Estrus is the period in the sexual cycle of female mammals, except humans during which they are in heat, i.e ready to mate. Prior to ovulation, the endometrium (uterine lining) thickens, in preparation for holding the fertilized ova. As the proliferation of uterine tissue reaches its peak, receptivity is the highest which is called the oestrous period. The period of sexual receptivity is primarily initiated by the elevation in estrogens from mature follicles just prior to ovulation. The basic pattern of the oestrous cycle is the same in all domestic animals, but some specific differences are found in specific parts of the cycle. 

• Reproduction is a biological process in which an organism gives rise to young ones. It is a fundamental feature of all known life. Reproduction enables the continuity of the species and produces genetic variations in organisms. 
• Reproduction not only maintains populations of the young and adult persons but also that of older adults.
• Reproduction is a key process that determines the distribution of people of various ages in a population, called age structure.
• So the correct option is D.
  

Fertilised ovary is technically called fruit. But if ovary develops into fruits, without fertilisation, it is called parthenocarpic fruit. Such fruits are generally seedless. Some common examples found in nature are: Citrus, banana, etc., Parthenocarpy can be artificially induced too by application of certain plant hormones, especially, auxins and gibberellins.

• Reproduction is an essential process required for continuity of life and survival of species generation after generation. 
• An individual has a limited lifespan and lives for a defined time period but species survive and evolve for a much longer duration. Reproduction serves no other purpose and is not required for energy production or growth of an organism.

Reproduction can be defined as the biological process by which new individuals or offsprings are produced from their 'parents'. Offsprings are little similar to their parents.
Budding is a type of asexual reproduction by which offsprings arise from a single organism.

Reproduction is a process by which there is the production of a new organism by combining the genetic material of two different individuals. It occurs in eukaryotes. A process similar to sexual reproduction (conjugation, transduction, transformation) also takes place in prokaryote also but it is not a reproduction.

Reproduction is important because, with the help of reproduction, a new generation of species are produced. With the help of reproduction, genetic traits of that species are transferred from one generation to another.

A. Human show spontaneous ovulation that means ovum is released in every menstrual cycle irrespective of the fertilization event.

Reproduction is the biological process, through which a new organism produced from their parents. It is of two types - sexual reproduction, asexual reproduction. Asexual reproduction occurs through the involvement of the single parent. It occurs by many methods e.g .budding, fragmentation, spores. Asexually reproduce offspring is an identical copy of their parents. Sexual reproduction occurs through the involvement of two parents. It occurs through the male and female gametes. Sexually reproduce offspring are less similar to their parents. Reproduction is always observed in living organisms.

• Reproduction is the process by which living organisms produce new offspring similar to themselves.
• All living organisms do not have the capacity to reproduce. For example worker honeybees, mule or sterile human couples. Despite their inability to reproduce, they show other characteristics of living organisms.