Figure 20.58 -In the Phylogenetic Tree Shown in Figure 20.58,what Can You

question 93

Multiple Choice

figure 20.58
-In the phylogenetic tree shown in figure 20.58,what can you conclude about the origin of marine (sea) snakes?

• A)The marine snakes were the ancestor to all modern snakes
• B)The marine snakes evolved independently from terrestrial snakes
• C)The marine snakes arose later in snake evolution
• D)Marine snakes probably had functional hindlimbs more recently than did terrestrial snakes
• E)Marine snakes are more closely related to amphibians than to other reptiles

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Definitions:

Saccharomyces

A genus of fungi that includes many yeast species, widely used in baking, brewing, and wine-making.

Arbuscular Mycorrhizae

A type of symbiotic relationship between plants and fungi, where the fungus invades the plant roots to enhance nutrient and water absorption.

Endomycorrhizae

A type of mycorrhiza in which the fungus penetrates the cortical cells of the roots of a vascular plant, enhancing nutrient exchange.

Mycorrhizal Associations

Symbiotic relationships between the roots of plants and fungi, helping plants to absorb nutrients more efficiently from the soil.