Tag: parthenogenesis

Fragmentation, budding and spore formation are types of asexual reproduction where no gamete formation takes place. Here, a single organism produces offspring without the involvement of any other organism or gamete formation.

• Parthenogenesis involves growth and development of embryo from an unfertilised egg cell. 
• Parthenogenesis will result in offspring that are genetically similar and with stable environment and abundant resources all of them can survive.
• While, sexual reproduction results in offspring that are not identical and this variation leads to competition for resources.

Parthenogenesis is a method of asexual reproduction with embryo formation without fertilization and parthenocarpy involves fruit formation without seed formation. 

The answer is D- seedless without fertilization

Simple fruits are from a single flower with one pistil. Aggregate fruits are from a single flower with many pistils. Multiple fruits are from many florets. In the inflorescence, fruitlets fuse together into one, bigger fleshy fruit.

Parthenocarpic fruit matures to be fleshy without the ovules ripening into seeds. The process of producing fruits without the fertilization of any seeds, which makes them seedless, is termed parthenocarpy. Thus answer is Parthenocarpic.

The correct option is D.   

A) Apogamy- In this process, a haploid cell of female gametophyte (except egg cell) is responsible to form diploid embryo without fertilization.

• Parthenogenesis refers to the development of an organism without fertilisation.
• In honeybee, males develop from unfertilized eggs while females are the result of fertilisation.

The stimulus which are used to induce artificial parthenogenesis are chemicals like salts, weak acids, organic solvents, (chloroform) urea, sucrose, strychnine and physical stimuli like temperature, electric shock or mere shaking, a needle smeared with blood (egg of frog) and saline solution (egg of sea urchin).

Parthenogenesis is the production of an embryo from a female gamete without any genetic contribution from a male gamete, with or without the eventual development into an adult. It corresponds to endomixis since the nuclear reorganization leads to the formation of macronucleus which also results in rejuvenation of the organism.

Parthenocarpic fruits are fruits produced naturally without the fertilisation of the ovule. Seedless banana are an example of naturally occuring parthenocarpic fruit. So, the correct option is 'Parthenocarpic fruit'.