The reading and the lecture are both about agnostids. The author of the article provides three theories about how these extinct animals may have lived. The lecturer disputes all the claims made in the passage. Her position is that the theories have serious weaknesses.
According to the reading, the agnostids may have been free-swimming predators that were catching smaller animals. This specific argument is challenged by the professor. She claims that free-swimming predators have large and well-developed eyes, but agnostids' eyes were very tiny and poorly developed, in other words, they were blind. As a result, agnostids could not be predators. In addition, hunters have some sensory organs to help them, catching their prey, but there is not any evidence for agnostids' specific organs in the fossil records.
Secondly, the writer posits that the agnostids may have dwelled on the seafloor and survived by scavenging dead organisms or by grazing on bacteria. The speaker, however, goes on to say that seafloor dwellers cannot move fast. Their speed is slow, and they stay in one place to find their food, so they belong to a small area. On the other hand, agnostids have been found in multiple places, separating with long distances. This shows that agnostids moved very fast and traveled easily, so they were not seafloor dwellers.
Finally, the reading suggests that the agnostids were parasites, living on and feeding off larger organisms. In contrast, the lecturer notes that the parasites' populations are not large, and their numbers are too limited. On the other hand, the population of agnostids is large and can be seen in fossil records, so the agnostids do not belong to parasites.
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Attribute Value Ideal
Final score: 25 in 30
Category: Good Excellent
No. of Grammatical Errors: 3 2
No. of Spelling Errors: 6 2
No. of Sentences: 17 12
No. of Words: 276 250
No. of Characters: 1380 1200
No. of Different Words: 147 150
Fourth Root of Number of Words: 4.076 4.2
Average Word Length: 5 4.6
Word Length SD: 2.509 2.4
No. of Words greater than 5 chars: 99 80
No. of Words greater than 6 chars: 81 60
No. of Words greater than 7 chars: 58 40
No. of Words greater than 8 chars: 32 20
Use of Passive Voice (%): 0 0
Avg. Sentence Length: 16.235 21.0
Sentence Length SD: 6.169 7.5
Use of Discourse Markers (%): 0.765 0.12
Sentence-Text Coherence: 0.321 0.35
Sentence-Para Coherence: 0.52 0.50
Sentence-Sentence Coherence: 0.086 0.07
Number of Paragraphs: 4 4