Rapid expansions and developments of new species, called , are often preceded by

Question

Rapid expansions and developments of new species, called , are often preceded by trial developments, adaptive breakthroughs o evolutionary radiations, genetic mutations evolutionary radiations, adaptive breakthroughs o artificial selection, increases in predator species QUESTION 4 What major change happened that set the stage for vertebrates to succeed on land? O Evolution of a body cavity O Limbs evolved from fins o Lungs evolved from gills O laws evolved from gill bars QUESTION 5 One pair of evolutionary-distant mammals that are examples of body form convergence is marsupial and placental wolves o whales and manatees e trilobites and horseshoe crabs o crinoids and sea lilies

Explanation / Answer

Question 3:

Adaptive breakthrough is an intrinsic features of a taxon, an evolutionary change by the acquisition of a distinctive adaptation that permits a population or taxon to move from one adaptive zone to another. At the most extreme such moves might be from water to land, or from land to air.

A radiation that follows a major extinction is usually amplified by the evolution of adaptive breakthroughs.Thus adaptive breakthrough can crop up in any taxon, increasing its potential to radiate.

Answer: Evolutionary radiations, adapative breakthroughs.

Question 4:

In order for vertebrates to succeed on land, they had to be able to breathe and move around. These adaptations are first seen in a primitive group of fish. Their fleshy fins are supported by bones and ther can walk around in their habitats.

Although they take in oxygen primarily through gills, they also have lungs.

Thus, the evolutionary modification of fins into limbs with digits is a unique adaptation of terrestrial vertebrates.

Answer: Limbs evolved fron gills

Question 5:

Marsuptial thylacine (Tasmanian Tiger) had many resemblance to Placental canids (Wolves)

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