
Concept explainers
The two groups of mammals with the largest number of species are
a. marsupials and monotremes.
b. carnivores and whales.
c. bats and rodents.
d. apes and lampreys.

Introduction:
Mammals are the part of Chordata taxonomic group as they possess distinctive characteristics like presence of notochord. Mammals are named due to the presence of mammary glands that secretes milk to feed newborns. There are numerous groups in the mammals based on specific characteristics, each containing numerous species of the mammals.
Answer to Problem 1MC
Correct answer:
The two groups of mammals with the largest number of species are bats and rodents.
Explanation of Solution
Explanation for the correct answer:
Option (c) is given that the two groups of mammals with the largest number of species are bats and rodents. Rodents constitute almost 40% of the mammal population while bats constitute around 20% of the mammal population. These two groups consist of 60% of the mammal population. Hence, option (c) is correct.
Explanation for incorrect answers:
Option (a) is given that the two groups of mammals with the largest number of species are marsupials and monotremes. There are only five species of monotremes in the world while only 330 species of marsupials. Most of the marsupials are situated in Australia. So, it is an incorrect option.
Option (b) is given that the two groups of mammals with the largest number of species are carnivores and whales. Carnivores belong to various groups and are not limited to the mammals. There are only 70% species of whales. Even with the large sizes, the actual numbers of these animals are small as compared to 60% population of bats and rodents. So, it is an incorrect option.
Option (d) is given that the two groups of mammals with the largest number of species are apes and lampreys. Apes are found in forests and most of the apes are endangered species. Their number is much less compared to a number of rodents and bats. Lampreys are a group of vertebrates. They do not belong to mammals. So, it is an incorrect option.
Hence, options, (a), (b), and (d) are incorrect.
Therefore, it can be concluded that the two groups of mammals with the largest number of species are bats and rodents.
Want to see more full solutions like this?
Chapter 25 Solutions
EBK BIOLOGY
- Ch.21 What causes patients infected with the yellow fever virus to turn yellow (jaundice)? A. low blood pressure and anemia B. excess leukocytes C. alteration of skin pigments D. liver damage in final stage of disease — What is the advantage for malarial parasites to grow and replicate in red blood cells? A. able to spread quickly B. able to avoid immune detection C. low oxygen environment for growth D. cooler area of the body for growth — Which microbe does not live part of its lifecycle outside humans? A. Toxoplasma gondii B. Cytomegalovirus C. Francisella tularensis D. Plasmodium falciparum — explain your answer thoroughlyarrow_forwardCh.22 Streptococcus pneumoniae has a capsule to protect it from killing by alveolar macrophages, which kill bacteria by… A. cytokines B. antibodies C. complement D. phagocytosis — What fact about the influenza virus allows the dramatic antigenic shift that generates novel strains? A. very large size B. enveloped C. segmented genome D. over 100 genes — explain your answer thoroughlyarrow_forwardWhat is this?arrow_forward
- Molecular Biology A-C components of the question are corresponding to attached image labeled 1. D component of the question is corresponding to attached image labeled 2. For a eukaryotic mRNA, the sequences is as follows where AUGrepresents the start codon, the yellow is the Kozak sequence and (XXX) just represents any codonfor an amino acid (no stop codons here). G-cap and polyA tail are not shown A. How long is the peptide produced?B. What is the function (a sentence) of the UAA highlighted in blue?C. If the sequence highlighted in blue were changed from UAA to UAG, how would that affecttranslation? D. (1) The sequence highlighted in yellow above is moved to a new position indicated below. Howwould that affect translation? (2) How long would be the protein produced from this new mRNA? Thank youarrow_forwardMolecular Biology Question Explain why the cell doesn’t need 61 tRNAs (one for each codon). Please help. Thank youarrow_forwardMolecular Biology You discover a disease causing mutation (indicated by the arrow) that alters splicing of its mRNA. This mutation (a base substitution in the splicing sequence) eliminates a 3’ splice site resulting in the inclusion of the second intron (I2) in the final mRNA. We are going to pretend that this intron is short having only 15 nucleotides (most introns are much longer so this is just to make things simple) with the following sequence shown below in bold. The ( ) indicate the reading frames in the exons; the included intron 2 sequences are in bold. A. Would you expected this change to be harmful? ExplainB. If you were to do gene therapy to fix this problem, briefly explain what type of gene therapy youwould use to correct this. Please help. Thank youarrow_forward
- Molecular Biology Question Please help. Thank you Explain what is meant by the term “defective virus.” Explain how a defective virus is able to replicate.arrow_forwardMolecular Biology Explain why changing the codon GGG to GGA should not be harmful. Please help . Thank youarrow_forwardStage Percent Time in Hours Interphase .60 14.4 Prophase .20 4.8 Metaphase .10 2.4 Anaphase .06 1.44 Telophase .03 .72 Cytukinesis .01 .24 Can you summarize the results in the chart and explain which phases are faster and why the slower ones are slow?arrow_forward
- Can you circle a cell in the different stages of mitosis? 1.prophase 2.metaphase 3.anaphase 4.telophase 5.cytokinesisarrow_forwardWhich microbe does not live part of its lifecycle outside humans? A. Toxoplasma gondii B. Cytomegalovirus C. Francisella tularensis D. Plasmodium falciparum explain your answer thoroughly.arrow_forwardSelect all of the following that the ablation (knockout) or ectopoic expression (gain of function) of Hox can contribute to. Another set of wings in the fruit fly, duplication of fingernails, ectopic ears in mice, excess feathers in duck/quail chimeras, and homeosis of segment 2 to jaw in Hox2a mutantsarrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning



