Do you agree or disagree with the following statement? Dinosaurs are endotherms in polar conditions, have legs that can support this claim
The reading and the lecture are both about endotherms, which are a type of animal that can keep their torso temperature constant and have rapid growth. The author of the reading believes that dinosaurs were reptiles and assumed to be not endotherms, but provides evidence that they are endotherms like humans. The lecturer casts doubt on the claims made in the reading. The lecturer thinks that the evidence exhibited are not ideal First, the author points out that dinosaurs fossils were found in the polar regions. It is proved with the understanding that the animals can maintain a temperature above environmental conditions. This point is challenged by the lecturer. He says that polar regions are warmer when compared to today’s climate. Moreover, he argues that giant species could have moved to warmer places or hibernated during harsh cold climatic situations. Therefore, the lecturer thinks that the reader’s argument does not hold water. Second, the author contends that the position and movement of the legs helped these huge creatures to indulge in physical activities like running as opposed to reptiles and crocodiles. The author notes that giant animals are endotherms as their legs are places under their body rather than the body’s side. The lecturer rebuts this argument. He suggests that legs under the torso do not mean the creatures can run. Dinosaurs growing large size can be advantageous, but we cannot say that legs make them endotherms. Finally, the author states that Harversian canals nerves and blood vessels allow animals to grow rapidly which is a characteristic of endotherms. This huge creature’s fossil bones have Harversian canals which is a strong indicator of an animal being an endotherm. The lecturer, on the other hand, posits that growth ring defines the age of the dinosaurs. In polar or cold conditions, they either do not grow or the growth is very slow. This rapid, slower, rapid growth pattern suggests that these huge animals do not maintain constant body temperature and do not always grow rapidly.
Submitted by sindhu chava on