One plant that lives in a coral reef that is most peculiar than others is the sea sponge. It is a large soft blubbery sponge that sits on the ocean floor. This plant can reproduce sexually and asexually. Here is a summary of how both reproduction areas work. The sea sponge can do either to reproduce, it can asexual reproduce by separating itself or budding and drifting to a safe area and grow where it is. This is rare in most plants as lots need the sperm and overies to react but is known in a few land plants too. It also sexually reproduces by drifting to a sea sponge, realising semen into the other sea sponge which takes in the sperm to the overies to them grow and expand. This is different too as the sea sponge has no gonads but can still reproduce.
Here are three organisms and how their r and K selection impacts its survival. Coral uses bursts of semen into the water for it to drift towards other areas of coral to help it reproduce. It uses r selection because it spreads it everywhere and does not give any parental care towards it. A black tip reef shark uses K selection for reproduction because it has on average, 4-8 pups. When it gives birth to its live young, it helps it hunt, feed and defend itself for a few months before swimming off alone. These sharks have a head start to hunting because the larger ones that survived, eat the younger ones that were in the womb. The clownfish uses r selection by creating hundreds and hundreds of eggs. This is to help some have a chance at surviving but it is not certain that all will survive the first few days. The sea sponge uses K selection by only creating one new sponge at a time either by budding or by sexual reproduction this helps it ensure survival in two ways. Another animal that uses r selection is the sea or giant clam that bursts out semen into the water to drift to other giant clams. The amount of semen that it releases is huge but only a little bit ever gets to its true destination. The advantage of this is that it does have a chance at finding another clam for reproduction. The final animal is the port jackson shark. First it sexually reproduces and then it lays an egg. It then carries the egg to a place for it to hidden from predators with the upmost amount of care before swimming away.
The black tip reef shark has sexual reproduction with other sharks. It uses male and female gender system as well as internal fertilisation. This helps the pup grow in safty inside the mothers womb. The shark uses polygamy as its mating system by finding a new mate after it has given birth and nurtured its pups. It has R selection when giving the number of its offspring the place of development is giving birth to live young and caring for them but by only the mother shark to give the pups a head start to its new life.
The black tip reef shark has sexual reproduction with other sharks. It uses male and female gender system as well as internal fertilisation. This helps the pup grow in safty inside the mothers womb. The shark uses polygamy as its mating system by finding a new mate after it has given birth and nurtured its pups. It has R selection when giving the number of its offspring the place of development is giving birth to live young and caring for them but by only the mother shark to give the pups a head start to its new life.