Question

For reproduction, a sea turtle A) must return to shore to lay eggs on land. B) reverts to amphibian strategies and lays eggs in the water. C) has resorted to full viviparity. D) retains the eggs until they hatch, or is ovoviviparous. E) None of the choices is correct. 27) 28) 28) A unique anatomical design in turtles is that the A) limb girdles are inside the ribs. B) sternum is fused with the ribs. C) ribs articulate with the backbone. D) cranium is fused to the ribs. E) ribs have been totally lost. 29). ZY) Nonavian reptiles are different from amphibians in that reptiles possess which of the following? A) More muscular jaws B) A tough, scaly skin that provides protection against desiccation C) A shelled egg that can be laid on dry land D) Some form of copulatory organ permitting internal fertilization E) All of the choices are nonavian reptilian characteristics. 30) The anapsid skull is characterized by A) two pairs of openings separated by a bony arch. B) a single pair of openings and a bony arch. C) a beak-like process that associates the turtles and the birds. D) three pairs of openings to accommodate the nerves from an expanding sensory system. E) no temporal openings and the skull roofed with dermal bone. WYTY 31) The tuatara A) is the only surviving dinosaur relative. B) is snakelike in its features. C) is found in southwestern United States. D) has a well-developed parietal eye. E) All of the choices are correct. 32) What change(s) does an animal that moves from water to land have to accommodate? A) About 1000 times less buoyant density and 50 times less viscosity than water B) Wider diversity of habitats C) Change in oxygen content D) Regulation of body temperature in a more extreme environment E) All of the choices are challenges of life out of water

Answer 1

27) A) Must return to shore to lay eggs on land.

EXPLANATION: Sea turtles leave water and migrate to land to lay their eggs into a nest dug in the sand.

28) A) Limb girdles are inside the ribs.

EXPLANATION: This is the reason turtles are unique. For shell to protect limbs and head, it engulfs the limb girdles.

29) C) A shelled egg that can be laid on dry land.

EXPLANATION: Amphibians lays their eggs in water which are covered in gel whereas reptiles lay their eggs on land with a hard protective covering.

30) E) No temporal openings and the skull rooted with a dermal bone.

EXPLANATION: Anapsid skull do not have openings near temples but has a dermal bone.

31) D) Has a well developed parietal eye.

EXPLANATION: Tuatara has a third eye on the top of its head. It is called the parietal eye.It is only visible in hatchlings and later gets covered up with scales and pigments after 4-6 months.

32) E) All of the choices are challenges of life out of water.

EXPLANATION: Hence, animal needs to overcome all the challenges to accommadate on land.