Question

In: Biology

1.Consider strata I. What can geologists infer based on the position of strata I in relation...

1.Consider strata I. What can geologists infer based on the position of strata I in relation to the surrounding strata?

Strata I was deposited during the time when strata A was the top most layer of soil

Strata I was deposited after strata G.

Strata I was deposited after a hole was dug in the soil

All of these

2.We discussed several primate hypotheses. Which of the following is NOT a hypothesis explaining why primates evolved?

Visual Predating Hypothesis

Adaptive Hypothesis

Arboreal Hypothesis

Angiosperm Co-evolution Hypothesis

3.

I found a primate skull on a dig this summer. It has an eye socket enclosed by a bony plate. The primate does have a prehensile tail. It has a dental formula of 2-1-3-3. It has a canine honing complex. Based on these features, this primate can be classified as a member of the group…

Platyrrhine

Tarsiforme

Strepsirrhine

Catarrhine

4.

What is one difference between radiocarbon dating and potassium-argon dating?

Radiocarbon dating is used for organic materials while potassium-argon dating is used for rocks

Potassium-argon dating is based on calculations of the half-life of carbon compounds in rock

Radiocarbon dating only dates organic materials older than 200,000 years

Radiocarbon dating is based on calculations of the half-life of carbon compounds in rock

5.

Plesiadapiformes are our suspected primate ancestors but they are not true primates. Palaeontologists consider which of the following the first true primates?

Euprimates

Parapithecus

Tarsiers

Aegyptipithecus

Expert Solution

There is no image for question 1 (related to strata)

Answer 2 : Adaptive hypothesis

The hypothesis which does not explain how primates evolved is the “Adaptive Hypothesis.”

The visual predation hypothesis states that characteristic traits evolved when primates started to have specific adaptations to locate and feed on small insects to small animals in the dimly lit dense forests.

The arboreal hypothesis states that unique traits evolved as an adaptation to tree dwelling habit. Binocular vision (for efficient depth perception and judging distance while swinging from tree to tree), grasping hands and feet for holding tightly to tree branches and greater intellect for understand the three dimensional forest habitat.

The angiosperm radiation hypothesis also contributed to primate origins. It states that primates evolved in response to the availability of different flowers and fruits following the spread of angiosperms.

Answer 3: Platyrrhines

Catarrhines have a dental formula 2123 with 2 premolars and 3 molars.

In platyrrhine species, there are 3 premolars and 2/3 molars making the dental formula either 2132 or 2133.

Tarsiers have a dental formula 2133/1133.

The prehensile tail is found in platyrrhines as well as strepsirrhines.

Answer 4 : Radiocarbon dating is used for organic materials while potassium-argon dating is used for rocks

Answer 5 : Tarsiers

gladiator answered 1 year ago

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