What purpose would that feature serve?

What purpose would that feature serve?

What purpose would that feature serve? 150 150 Nyagu

Question Description
I’m working on a biology exercise and need a sample draft to help me learn.

QUESTION 1

Amniotes
Amniotes are a group of tetrapods that have a terrestrially adapted egg. Amniote embryos, whether laid as eggs or carried by the female, are protected and aided by several extensive membranes. In eutherian mammals (such as humans), these membranes include the amniotic sac that surrounds the fetus. These embryonic membranes, and the lack of a larval stage, distinguish amniotes from tetrapod amphibians.

There are three main groups of amniotes that you learned about during lecture. They are defined by the number of holes, or openings, in the skull near the temple associated with jaw muscles. Keep in mind that these holes are in addition to the skull openings that accommodate the eye socket and nostrils (see the diagrams to the right below). Remember these terms:

Anapsids – amniotes whose skulls do not have any additional holes beyond the eye sockets. Examples include turtles and the earliest (and now extinct) reptiles.

Synapsids – amniotes whose skulls have one temporal fenestra, an opening low in the skull roof behind each eye, leaving a bony arch beneath each. Examples: mammals and therapsids.

Diapsids – amniotes whose skulls have two temporal fenestrae. Examples: reptiles, dinosaurs, birds.

What is the advantage of having temporal fenestrae (extra holes in the temple area of the skull)? Why might so many vertebrate groups have “bothered” to make this adaptation?

QUESTION 2

Examine the skull: https://sketchfab.com/3d-models/sea-turtle-skull-4895b20e2f644b7eb1897ec61cc1d8ff
What type of amniote was this animal? [A]

1 points

QUESTION 3

What about these skulls: https://sketchfab.com/3d-models/vertebrate-merycoidodon-culbertsoni-pri-50653-e2e8d9bb62804de79f7a71c68feb6523
https://sketchfab.com/3d-models/ursus-spelaeus-cave-bear-lower-jaw-pri-50009-f8f81494d773464eb4af4c863a212ab9

What type of ammniotes are these? [A]

1 points

QUESTION 4

Focus on the teeth from the skulls in the previous questions. Do their teeth vary in size, shape, and function, or are they all about the same? How does this help you answer the question from above?
2 points

QUESTION 5

Dinosaurs, as you know, are diapsids. Do the teeth of the T. rex vary much in shape? Or do they all appear to be the same “style” of tooth, with presumably the same function?
https://sketchfab.com/3d-models/vertebrate-tyrannosaurus-rex-skull-mote-cf48487de55d454b8adc92dce2840a0d

1 points

QUESTION 6

What special feature does this tooth possess along the outer edge? [A]
https://sketchfab.com/3d-models/vertebrate-t-rex-tooth-pri-55205-353154e076364f6db8fd2b053f72be3f

1 points

QUESTION 7

Based on the T-Rex tooth from above, please answer these questions:
What purpose would that feature serve? For example, would this tooth be best suited for chewing tough meat? For stabbing prey and puncturing flesh? For tearing and slicing flesh? For slashing skin? What specific function do you think this special feature would serve?

2 points

QUESTION 8

Heaps of polished stones have been found in association with herbivorous dinosaur remains. What are they called, and what are their function?
https://sketchfab.com/3d-models/gastrolith-2c48a868eda143098b02182b5599dddf

2 points

QUESTION 9

Footprints can yield a great deal of information about the animal that produced it. In your group, list three types of clues that footprints can provide.
3 points

QUESTION 10

Dinosaur speed: Dinosaur trackways are found all over the world and scientists have actually learned to estimate how fast the Dinosaur was moving based on a few simple measurements and calculations. By observing how modern animals move we can actually determine simple relationships between the size of a foot and the length of a given stride and use them to determine how fast the Dinosaur was moving when it left the footprints! Follow the steps below to calculate the actual speed of a Velociraptor based on actual data from fossil trackways. All measurements should initially be in METERS and should be calculated to 2 decimal places. (Edited from: Over, D. J., 1995, Determining dinosaur speed. Journal of Geological Education, v. 43, p. 207-211)
The foot length of the Velociraptor is 0.25m and the stride length is 2.72m.

We know that the length of most dinosaur feet is approximately ¼ the length of the entire leg. Use this information to determine the leg length of the velociraptor.

1 points

QUESTION 11

Thinking about how long your leg is relative to your total height and how long other animals legs are relative to their total height, estimate the how tall you think the Velociraptor might have been?

1 points

QUESTION 12

Now we must come up with a way to compare all animals regardless of size, to do this we calculate relative stride length, which is equal to the stride length divided by leg length. Calculate the relative stride length.

1 points

QUESTION 13

Based on relationships between relative stride length and speed in modern amniotes scientists have developed an equation for a metric called dimensionless speed that will help us calculate absolute speed. Use the equation below to calculate the dimensionless speed.
D.S. = (R.S.L. – 1)/1.1

1 points

QUESTION 14

Now that you know the dimensionless speed you are ready to calculate the actual speed! Use the equation below to calculate the actual speed in meters/second ( g = acceleration due to gravity or 9.81 m/s2 ).
Speed (m/s) = (leg length x g)^(.5) x D.S.

1 points

QUESTION 15

Now convert the value you found in the question above to miles per hour to find out fast the dinosaur was moving!

1 points

QUESTION 16

1.For the next 3 questions you will be using this website: https://dinosaurpictures.org/#

Find a dinosaur from the Triassic period and answer these questions about it:

1. Where on Earth today have fossils been found?

2. How old are the found fossils?

3. Describe what the dinosaur looks like.

4. Include a fun fact about the dinosaur.

3 points

QUESTION 17

For the next 3 questions you will be using this website: https://dinosaurpictures.org/#
Find a dinosaur from the Jurrassic period and answer these questions about it:

1. Where on Earth today have fossils been found?

2. How old are the found fossils?

3. Describe what the dinosaur looks like.

4. Include a fun fact about the dinosaur.

3 points

QUESTION 18

For the next 3 questions you will be using this website: https://dinosaurpictures.org/#
Find a dinosaur from the Cretacous period and answer these questions about it:

1. Where on Earth today have fossils been found?

2. How old are the found fossils?

3. Describe what the dinosaur looks like.

4. Include a fun fact about the dinosaur.

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