Press "Enter" to skip to content

What is a tunicate in biology?

tunicate. / (ˈtjuːnɪkɪt, -ˌkeɪt) / noun. any minute primitive marine chordate animal of the subphylum Tunicata (or Urochordata, Urochorda). The adults have a saclike unsegmented body enclosed in a cellulose-like outer covering (tunic) and only the larval forms have a notochord: includes the sea squirtsSee also ascidian.

Where do tunicates come from?

Most tunicates live attached to a hard surface on the ocean floor and are commonly known as sea squirts (or cunjevois) and sea pork. They are found at all depths of the ocean. Other tunicates – such as salps, doliolids and pyrosomes – live in the pelagic zone as adults and are free-swimming or drifters..

What is tunicate metamorphosis?

Tunicate Metamorphosis The first part of metamorphosis is the secretion of adhesives by the papillae (pictured above). These serve to attach the larva to a root. The cerebral eye begins to retract and degrade. The tunicate then begins to reabsorb its tail along with the notochord and nerve cord.

Can a wolf kill a human?

In North America, there are no documented accounts of humans killed by wild wolves between 1900-2000. Worldwide, in those rare cases where wolves have attacked or killed people, most attacks have been by rabid wolves.

Who would win lion or bear?

Lion have more speed, but they are used to hunting in packs, not individually. So a lion would have trouble fighting a polar bear alone. But if there was a fight between a polar bear and a PACK of lions, well, then the lions would definitely win.

What animal would win a fight?

The results show that the elephant wears the crown in the animal kingdom – but only slightly. Elephants had a win rate of 74%, just fractions of a percent ahead of their single-horned cousins – the rhinoceros – in second place, also on 74%. Not far behind in third place is the grizzly bear, at 73%.

Which is bigger polar bear or Kodiak bear?

USGS Science Explorer. It is a close call, but the polar bear is generally considered the largest bear species on Earth. A close second is the brown bear, specifically the Kodiak bear. The consensus among experts is that the polar bear is the largest, but some believe the Kodiak bear to be larger.