QUESTION 4 1 pointsSaveAnEer Which of the fallawing is a feature af the amphibia

Question

QUESTION 4 1 pointsSaveAnEer Which of the fallawing is a feature af the amphibian circulatory systern? ?) Two ventricles ventricular septum Papilla amphibiorium QUESTIONS 1 points Savexve All anniotes are synapsids, but nat all synapsids are amniotes True False QUESTION 6 1 points Save Answer Which of the following correctly describes amniotes? Adults store energy wthin the amnion until reproduction, Embryos develop within four extra-embryonic membranes. O permeable. moist skin facilitates cutaneous respiration. All amniates are exclusively carnivorous until adulthood. QUESTION 7 1 points Sa Aver Which of the following traits make sauropsid avian respiratory systems more efficient than most synapeid respiratory systems? O Alr sacs that have extenslve capillary network to maximize diffusive rate. A muscular diaphragm that allews for faster ventilation rates. Unidirectional air flow enables countercurrent gas exchange. Trachea that have longitudinal folds to decrease dead space.

Explanation / Answer

4) Separated atria is the right answer.

Amphibians have three chambered heart with two atrium and one ventricle. Hence the first and second options are also ruled out. Papilla amphibiorium is a patch of neuroepithelium embedded in the labyrinth wall of the inner ear in amphibians .

5)False

All synapsids are amniotes, but all amniotes are not synapsids. Amniotes are the tetrapod vertebrae clad that includes reptiles, birds and mammals. While synapsids are the subclass of amniotes that include mammals and their extinct kins.

6)Embryos develop inside four extra -embryonic membranes .

Amniote embryos are protected and aided by several extensive membranes. These are the amnion, yolk sac, allantois and chorion.

7)Unidirectional air flow enables counter curcurregas exchange.

Birds have a one-way flow of air through their lungs. They don't have tiny air sacs called alveoli like synapsids. They have tiny tubes called air capillaries through which the air flows continuously and the benefit of doing that is that you always have fresh air flowing through the lung, maintaining a very high concentration of oxygen up against the bloodstream and therefore, you maximise the gradient for diffusion, pushing oxygen into the blood.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.