Like present day algae and fungi, the ancestors of extant (currently living) animals are thought to...
Like present day algae and fungi, the ancestors of extant (currently living) animals are thought to have had gametes that were
Select one:
a. Isogamous
b. Monogamous
c. Anisogamous
d. Prosogamous
e. Magnanimous
Homework Answers
Our ancestors were isogamous, that only gamete size was produced. The question of the evolutionary origin of males and females is then synonymous to asking what evolutionary pressures caused gametes sized to diverge.
Isogamy is a reproductive system where all gametes are morphologically similar, especially in terms of size.
Its importance goes beyond specific case. Furthermore, because maleness is synonymous with the production of small gametes, an explanation for the initial origin of males and females is synonymous with understanding the transmission from isogamy to anisogamy.
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Like present day algae and fungi, the ancestors of extant
(currently living) animals are thought to...
1. Red algae are A B. C. protists plants fungi animals prokaryotes D. Brown algae area...
1. Red algae are A B. C. protists plants fungi animals prokaryotes D. Brown algae area A. B. C. protists plants fungi animals prokaryotes E. gave rise to the entire terrestrial plant A single species of freshwater lineage. A. B. C. red algae brown algae green algae fungus prokaryote D. E. Green algae split into 2 clades: A. B. c. D. chromalveolata and stramenopila rhizaria and cercozoa alveolata and stramenopila excavata and opisthokonta chlorophytes and charophytes 5. The green algae...
1. If you were to build a phylogenetic tree of living animals, which of the following...
1. If you were to build a phylogenetic tree of living animals,
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B. true tissues
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temperature by producing heat through metabolism. Endothermy is
energetically expensive for an organism, yet endotherms have become
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advantage of endothermy?
A. Endothermy allows greater independence from water.
B....
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1. If you were to build a phylogenetic tree of living animals,
which of the following derived characters would appear first?
A. deuterostome development
B. true tissues
C. protostome development
D. bilateral symmetry
2. Birds and mammals are endotherms. They maintain body
temperature by producing heat through metabolism. Endothermy is
energetically expensive for an organism, yet endotherms have become
the dominant group of tetrapods. What is a major evolutionary
advantage of endothermy?
A. Endothermy allows greater independence from water.
B....
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