▶ Your Answer :
The reading passage contends that Sauropods had horizontal posture of neck. On the other hand, the lecturer brings up several points which contradict this argument. First, according to the lecturer, the tail was not heavy enough to evoke weight issues. To be specific, the tail was slender in comparison to the massive size of neck. Furthermore, given that its bone was hollow, it is implausible to claim that the neck must had been horizontal to counterweight the tail. This contradicts the reading passage's argument that Sauropods had horizontal posture of neck due to the heavy weight of its tail. Second, the speaker asserts that marine organisms were insufficient for the dinosaur to sustain its life. Rather, Sauropods are considered to had eaten varied plants including those of lands. Hence, upright posture of the neck would make it easier to feed. This casts doubt on the reading passage's argument that the dinosaur had horizontal neck to make it more comfortable to eat plants near water surface. The final point delivered through the lecture is that Sauropods had adequately strong muscles to contain the weight of the neck. There exists the possibility of the dinosaur having vigorous shoulder muscles, which had possibly contributed to upholding the upright posture of neck. This counters the reading passage's assertion that having vertical neck was impossible due to its weak neck muscles. |