Homework Answers
5 Ans there is no common set of synomorphies that define a protists
Protists are a paraphyletic group. No synapomorphies define the protists (there is no trait found only in protists)
6 Ans. because photosynthetic protists fix atmospheric carbon dioxide, decreasing atmospheric CO2 levels
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5. Which of the following statements is consistent with the assertion that protists are paraphyletic? A....
1) Which of the following is NOT true about protists? a) protists are enormously important in...
1) Which of the following is NOT true about protists? a) protists are enormously important in global photosynthesis and biogeochemical cycles b) Protists are a monophyletic group c) protists include all eukaryotes except plants, animals and fungi d) Some major clades of protists (e.g. diatoms) are much younger than plants or animals 2) The evolution of the cytoskeleton in eukaryotes allowed for wich new capabilities lacking in prokaryotes? (Multiple Answer) a) Mitosis and meiosis b) Phagocytosis c) Amoeboid motion d)...
What are the answers to these questions? Which of the following statements concerning protists is true?...
What are the answers to these questions? Which of the following statements concerning protists is true? For this one, I think B? A All slime molds have an amoeboid stage that may be followed by a stage during which spores are produced. B All protists have mitochondria, though in some species they are much reduced and known by different names. C The primary organism that transmits malaria to humans by its bite is the tsetse fly. D All apicomplexans are...
of the following Based on the cladogram which statements is correct? rhesus baboon monka orangutan chimpanzee...
of the following Based on the cladogram which statements is correct? rhesus baboon monka orangutan chimpanzee human common ancestor a. rhesus monkey evolved first b. humans evolved from baboons c. rhesus monkeys are more primitive than baboons. do rhesus monkeys, baboons, oragutans, gorillas, chimpanzees, and humans all evolved from the same common ancestor
2. List two characters/traits you share with ALL animals that are NOT shared by ANY plants....
2. List two characters/traits you share with ALL animals that are NOT shared by ANY plants. 2a. Consider the traits you listed in the previous question. Would any of them help you to distinguish an animal (e.g., you) from a plant (e.g., a pine tree)? Choose one: YES NO (highlight in color and bold) 2b. Consider the same animal traits. Would any of them, by themselves, help you to distinguish one species of animal from another species of animal? Choose...
Complete the following paragraph to describe the evolutionary history of fungi. Fungi and animals are ;...
Complete the following paragraph to describe the evolutionary history of fungi. Fungi and animals are ; however, fungi are , a special type of heterotroph that absorbs food from the environment instead of eating it. protists animals Fungi release special into the environment to break down dead and decaying organic matter so that its nutrients can be absorbed. enzymes carbohydrates Fungi and share a common ancestor, so it is thought that fungi are most closely related to this group. autotrophs...
Which of the following groups is comprised solely of chemoheterotrophs? Click all that apply. animals fungi...
Which of the following groups is comprised solely of chemoheterotrophs? Click all that apply. animals fungi vascular plants prokaryotes protists nonvascular plants Which of the following groups is comprised solely of chemoheterotrophs? Click all that apply. animals - fungi - vascular plants prokaryotes protists -nonvascular plants Ive gotten this wrong 5 times now the ones with dashes are my answers
Permian extinction... Which of the following statements about the Permian extinction is FALSE? A. An estimated...
Permian extinction... Which of the following statements about the Permian extinction is FALSE? A. An estimated 95% of all marine species were lost during the event. B. Adaptive radiations of surviving groups occurred afterwards. C. An estimated 70% of all terrestrial vertebrate species were lost during the event. D. It occurred around 250 million years ago. E. It caused the extinction of the dinosaurs. Which of the following statements about taxonomy is FALSE? A. Species that are in the same...
8. Which of the statements about the organization of complex multicellular organisms is false? Only some...
8. Which of the statements about the organization of complex multicellular organisms is false? Only some cells are in direct contact with the environment. Exterior cells receive environmental signals directly, whereas interior cells receive environmental signals indirectly Exterior cells are highly differentiated, whereas interior cells are not differentiated. Interior cells cannot grow as fast as exterior cells without mechanisms to transfer nutrients between cells. Signals transferred from exterior cells to interior cells can activate or repress gene expression in the...
Serial Endosymbiotic Theory (SET) was proposed by Dr. Lynn Margulis (then Lynn Sagan) in the 1960s...
Serial Endosymbiotic Theory (SET) was proposed by Dr. Lynn Margulis (then Lynn Sagan) in the 1960s by drawing on experimental evidence from multiple disciplines. Which of the following statements is consistent with SET? Explain. a. SET suggests that the ancestral prokaryote was chimeric in nature due to the horizontal fusions of distinct prokaryotic species; this hypothesis complicates the theory of linear descent as outlined by Darwin. b. The unicellular protist parasite Giardia lamblia, that causes diarrheal disease in humans and...
3. According to the molecular sequence-based phylogenetic tree of animal life, which of the following is...
3. According to the molecular sequence-based phylogenetic tree of animal life, which of the following is correct? a. Eucolomate animals evolved from pseudocoelomate animals, which in turn evolved from acoelomate animals. b. Segmentation probably evolved in only one clade, which includes more than one phylum showing segmentation. C. Segmentation evolved in some protostomes and some deuterostomes. d. Deuterostomes are more closely related to eucoelomate protostomes than to other protostomes that are pseudocoelomate or acoelomate. e. None of the above is...
of the following Based on the cladogram which statements is correct? rhesus baboon monka orangutan chimpanzee human common ancestor a. rhesus monkey evolved first b. humans evolved from baboons c. rhesus monkeys are more primitive than baboons. do rhesus monkeys, baboons, oragutans, gorillas, chimpanzees, and humans all evolved from the same common ancestor
2. List two characters/traits you share with ALL animals that are NOT shared by ANY plants. 2a. Consider the traits you listed in the previous question. Would any of them help you to distinguish an animal (e.g., you) from a plant (e.g., a pine tree)? Choose one: YES NO (highlight in color and bold) 2b. Consider the same animal traits. Would any of them, by themselves, help you to distinguish one species of animal from another species of animal? Choose...
Complete the following paragraph to describe the evolutionary history of fungi. Fungi and animals are ; however, fungi are , a special type of heterotroph that absorbs food from the environment instead of eating it. protists animals Fungi release special into the environment to break down dead and decaying organic matter so that its nutrients can be absorbed. enzymes carbohydrates Fungi and share a common ancestor, so it is thought that fungi are most closely related to this group. autotrophs...
8. Which of the statements about the organization of complex multicellular organisms is false? Only some cells are in direct contact with the environment. Exterior cells receive environmental signals directly, whereas interior cells receive environmental signals indirectly Exterior cells are highly differentiated, whereas interior cells are not differentiated. Interior cells cannot grow as fast as exterior cells without mechanisms to transfer nutrients between cells. Signals transferred from exterior cells to interior cells can activate or repress gene expression in the...
Serial Endosymbiotic Theory (SET) was proposed by Dr. Lynn Margulis (then Lynn Sagan) in the 1960s by drawing on experimental evidence from multiple disciplines. Which of the following statements is consistent with SET? Explain. a. SET suggests that the ancestral prokaryote was chimeric in nature due to the horizontal fusions of distinct prokaryotic species; this hypothesis complicates the theory of linear descent as outlined by Darwin. b. The unicellular protist parasite Giardia lamblia, that causes diarrheal disease in humans and...
3. According to the molecular sequence-based phylogenetic tree of animal life, which of the following is correct? a. Eucolomate animals evolved from pseudocoelomate animals, which in turn evolved from acoelomate animals. b. Segmentation probably evolved in only one clade, which includes more than one phylum showing segmentation. C. Segmentation evolved in some protostomes and some deuterostomes. d. Deuterostomes are more closely related to eucoelomate protostomes than to other protostomes that are pseudocoelomate or acoelomate. e. None of the above is...
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