What is the angiosperm radiation hypothesis?

The angiosperm radiation hypothesis proposes that: certain primate traits were responses to the acquisition of fruit during the Cenozoic. Euprimates represent the: first true primates. Monkeys underwent massive _______ in the Pilocene and Pleistocene.

What is the angiosperm coevolution hypothesis?

According to the theory, known as the angiosperm coevolution hypothesis, long ago, our primate ancestors evolved key adaptations like forward-facing eyes, excellent colour vision, rounded, blunt teeth and fingers without claws, all for the purpose of eating and living from fruits.

What does the visual predation hypothesis propose?

The visual-predation hypothesis proposes that certain derived features shared by crown primates reflect an insectivorous ancestry. Critics of this idea have argued that because insectivory is uncommon among extant primates it is unlikely to have been a major influence on early primate evolution.

What resulted from the radiation of angiosperms?

Angiosperms have gradually dominated terrestrial environments after their appearance during the Early Cretaceous (1, 2). Their radiation was characterized by high and rapid diversification (3, 4), high rates of speciation throughout the Cretaceous (5), and unprecedented ecological dominance.

What does the arboreal hypothesis of primate origins explain?

(Q001) What does the arboreal hypothesis of primate origins explain? Grasping hands and feet were necessary for living in trees. (Q002) As a corollary to the idea that primates emerged as an adaptation to an arboreal environment, what did Matt Cartmill propose?

What is the best hypothesis for the origin of primates?

There are three significant hypotheses of the origin of primates. They are visual predation hypotheses, arboreal hypotheses, and angiosperm- primate co-evolution hypotheses. The visual predation hypothesis proposes that most primates’ visual traits evolved to adapt to preying on small animals and insects.

When did angiosperms radiate?

Although the timing of the origin of flowering plants is debated (25–31), there is consensus that they radiated in the Early Cretaceous (∼145 Ma) and are the most recently diversifying major clade among the land plants (25–31).

What was Darwin’s explanation for the evolution of angiosperms?

In fact, decades later, Darwin hypothesized that one possible explanation for an evolutionary radiation associated with the origin of angiosperms (if such a radiation must be accepted) was an elevated evolutionary rate driven by coevolution with insect pollinators (see [6]).