Concept explainers
To determine: The evolutionary significance of a choanoflagellate.
Introduction: Chloroplasts are the organelles that are necessary for photosynthesis. They are found exclusively in plant cells and some cells of algae. They contain the pigment chlorophyll that is used for driving the process as it contains various proteins that convert carbon dioxide into carbohydrate molecules.
Explanation of Solution
Pictorial representation: The figure represents the phylogenetic relationship between red, green, and brown algae.
Fig.1: The phylogenetic relationship between red, green and brown algae
The autotrophs are the organisms that can synthesize their food by the process of photosynthesis. They harvest the energy from sunlight and convert it into usable form carbohydrate cause glucose. The autotrophs include plants, some bacteria, and algae. The algae are of three types depending upon the pigment present in their chloroplast. These three groups are Phaeophyceae, Rhodophyceae, and Chlorophyceae. The green algae Chlorophyceae is known to give rise to land plants that are modern-day photosynthetic organisms.
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Chapter 28 Solutions
BIOLOGY
- What is the phylum and genus of the plant shown here? What is the name of the T-shaped structure on the right? What type of nuclear division takes place in the T-shaped structure on the right? (CUFAC) Phylum? Genus? OU What is the name of the T-shaped structure on the right? What type of nuclear division takes place in the T-shaped structure on the right? [Choose ] [Choose ] [Choose] [Choose ] < <arrow_forwardchoose correct option nd Do explain 1. Which of the phylogenetic trees in the Figure is the most accurate? Explain your answer. Note: the mitochondria and chloroplasts are from maize, but they are treated as independent “organisms” for the purposes of this question. a. Tree (a) b. Tree (b) c. Tree (c) d. Tree (d) e. Tree (e)arrow_forwardAlternation of generations means -One phase of the life cycle is photosynthetic and the other is heterotrophic. -One phase of the life cycle is unicellular and the other is multicellular. -One phase of the life cycle takes place on land and the other in water. -One phase of the life cycle is multicellular diploid and the other is multicellular haploid. -One phase of the life cycle is motile and the other is stationary.arrow_forward
- Construct the data matrix From the DNA sequence data from the 5 taxa. (Hint: there are three variable nucleotide sites, which are the characters) Map all three characters onto both mypotheses using two Colors (same as in Activity 6). 3 position 111111 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 ATTGCGGCCTGTATG Taxon A Taxon B ATGGCGGGCTGTAAG Taxon C ATTGCGGGCTGTATG Taxon D ATTGCGGGCTGTAAG Taxon E ATGGCGGCCTGTATG 1 Determine the treelength of both hypotheses and fill in 3 the treelength and Justify Text minimum number of changes in the table on the lower right. Then compute the CI for both hypotheses and put a checkmark or X to indicate which one is the most parsimonious and which one is the most accurate. 4 Character/ states Taxon A Use the most accurate phylogeny to infer the origin of the new fungal pathogen Taxon B Hypothesis Treelength Minimum CI Most parsimonious Most accurate Taxon C Taxon D 1 taxon taxon A taxon B taxon C taxon D taxon E Taxon E Minimum 2 origin Florida (new) Mexico China…arrow_forwardMake your molecular phylogony of the 6 mushroom species with given character matrix. (I also gave you the DNA sequence give to me which is how I made the character matrix)arrow_forwardPhylogenetic with branch lengths scaled in genetic distance 0.88 0.88 0.93 0.78 2388-3883 232 2002 4⁹29930 9823-2883 0.8 0.82 0.89- Mycobacterium tuberculosis Lineage 2 0.99 2001 90-2004 4484 2005 -0.635 388627805 718356883 11 2002 -83331-9811 74333-2690 $250-2010 10737 2002 203 2001 1511 208201 4701810 2008-2011 6295 29889 8073_2007 0.01 (# substitutions/nucleotide site) 83922889 015 2005 98507_2009 8195 200 46828000 Root-to-tip distance Evolutionary distance from root-to-tip versus sampling time 2.8x10 2.2x10 R²=0.00 1990 1995 2000 00 000 80 2005 000 O oo XBOO8 1. In this figure you can see a phylogenetic tree of samples of Mycobacterium tuberculosis lineage 2 and a corresponding root-to-tip plot. The branch lengths in the tree are scaled by evolutionary/genetic distance, so not by time. In the plot on the right, the summed branch lengths going from the root to the tips of the trees are then plotted against the dates the tips were sampled. What can we conclude from these figures? The…arrow_forward
- While conducting a plant diversity survey in a temperate rainforest in Washington state, you come across a number of individuals of a low-lying plant species. These plants spread over the surface of moist groun and have numerous small stems that have tiny leaflets. They have root-like structures but do NOT have roots. Back at the lab, tests indicate that the majority of the plant material is haploid. The plant you discovered is likely most closely related to -a moss. -complex streptophyte algae. -a daisy -a conifer -a lycophytearrow_forwardLabel the diagram which features an illustration of a portion of the sporophyte of Selaginella with strobili, and a photomicrograph of the longitudinal section of a mature strobilus. Indicate whether each of the structure you identified is haploid (n) or diploid (2n)arrow_forwardIn Figure 20-18, what is the evidence that polyploid formation has been important in plant evolution?arrow_forward
- 39arrow_forwardWhen the Ascomycetes fungus reproduces sexually, mating type A fungi cross fertilize mating type a fungi. The resulting zygotes undergo meiotic and then mitotic division to produce asci with eight ascospores. The ascospores in the asci are ordered and reflect the position of the parental nuclei in the zygote. Use the passage to answer the question. Based on the diagram, how many unique ascospores are produced in each ascus resulting from the cross fertilization of two Ascomycetes fungi? A. 1 B. 2 C. 4 D. 8arrow_forwardWhich of the following is correct? The filaments of water molds and fungi are homologous The structures of brown algae and plants are homologous The chloroplasts of plants and green algae are homologous None are truearrow_forward
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning