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- Please choose all the correct statements regarding the Shark. One can differentiate male and female sharks by the structure of their pelvic fins. Sharks have a two chambered heart. The spiral valve is inside the heart of a shark. The rectal gland excretes excess salts. The cloaca is a type of anus.Select the best answer. Birds differ from earlier vertebrates by Select one: their ability to maintain constant body temperature. the amniotic egg. their lack of scales. the ability to fertilize eggs internally. their possession of a dorsal nerve cord.Please answer 3 and 4 for : "Blacktip Reef Shark"
- This is a valid argument: All frogs are amphibians Therefore all non-amphibians are non-frogs. true or falseT/F: From an evolutionary perspective, members of the class Amphibia are more closely related to members of the class Chondrichthyes than they are to members of the class Sarcopterygii. True or Falsewater from the vestibule proceeds to which of the following digestive organs? pharynx, midgut, mouth or esophagus the frontal plate is the only unpaired plate or scale in the heads of snakes. true or false birds generally have one exoskeletal structure--feathers. true or false
- Label the part of the male and female picture below: 1.0 mm Figure 5. Cyclops male and femaleLabel A-K -Mantle -Foot -Posterior Adductor Muscle -Stomach -Gonad -Mouth -Anterior Adductor Muscle -Gills -Anus -Digestive Gland -HeartPlease choose all the correct statements regarding Birds. Humans and birds both have clavicles, scapulas, and coracoid bones. O The sternum of a bird is keeled for attachment of breast muscles. The sternum of Archeopteryx is keeled like that of modern birds. The pygostyle supports the tail feathers of a bird. Birds have strong jaws with teeth that vary with diet.
- Size of wattle, Shank spur (+/0), Shape of hackles, Shape of saddles, Size of tail feathers, and Shape of tail feathers in male and female D. melanogasterSeveral features are unique to vertebrates. Complete the following sentences related to vertebrate characteristics by selecting from the terms provided. dorsal nerve cord closed circulatory system endoskeleton exoskeleton sensory organs open circulatory system archenteron temporal openings notochord neural crest. For the majority of vertebrates, the column during embryonic development. is replaced by the vertebral Vertebrates also have a well-differentiated head with three pairs of well- developed In addition to these two key characteristics, this group possesses a group of embryonic cells called the that contribute to the development of many vertebrate features. These features include a heart and a These and other internal organs are surrounded by an provides extraordinary powers of movement. thatGive reasons why the frog is chosen to be studied in all Biology classes, as the representative of all animals in the animal kingdom.