Jellyfish should reproduce sexually if genetic variation is needed in order to survive in the change in environment.
Jellyfish should reproduce sexually if genetic variation is needed by the organism leading to more adaptations to the natural environment. There is no variation between offspring in asexual reproduction.
It involves single parent not two parents so their chances of survival against change of environment while on the other hand, offspring produced from sexual reproduction having variations that leads to higher chance of survival.
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Disruptive selection.
Disruptive selection eliminates phenotypes near the average and favors the extreme phenotypes, resulting in increased genetic variation in a population.
The causitive agent of the cohesion-tension model of xylem transport is transpiration. During the process of transpiration, water vapor is lost from the stomata of the leaf. To replace this water, water from adjacent cells is withdrawn. The water molecules stick together due to cohesion and are transported upwards through the stem in the form of a stream.<span />
