One of the most primitive living Vertebrates, this organism has no true jaw structure, lacks paired fins and is ectoparasitic to other fish:
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This organism’s body is elongated and lance shaped. It is co…
This organism’s body is elongated and lance shaped. It is commonly found in sandy bottoms of coastal waters and retains all 4 chordate characteristics into adulthood.
Cartilaginous fish belong to this Class:
Cartilaginous fish belong to this Class:
The ability to walk upright on two feet is known as:
The ability to walk upright on two feet is known as:
Kangaroos belong to which of the following categories of Mam…
Kangaroos belong to which of the following categories of Mammals?
Birds with seed-cracking beaks and perching feet best descri…
Birds with seed-cracking beaks and perching feet best describe which group:
This group is though to be the most primitive primates, cons…
This group is though to be the most primitive primates, consisting of lemurs and tarsiers.
Which of the following is not a characteristic of Primates?
Which of the following is not a characteristic of Primates?
This organism lives on the ocean floor and “squirts” water o…
This organism lives on the ocean floor and “squirts” water out of its excurrent siphon when disturbed.
The largest group of vertebrates (with about 25,000 species)…
The largest group of vertebrates (with about 25,000 species) is: