Concept explainers
To review:
The life-history attribute that was likely to be present in the common ancestor of the apicomplexans but, not in other alveolates.
Introduction:
The unicellular organisms with alveoli-like sacs beneath their cell membranes are called as alveolates. Alveolate clades mainly include the
Explanation of Solution
Apicomplexans mainly constitute genus including Plasmodium, Theileria, and Toxoplasma. All these organisms commonly have an exclusively parasitic lifestyle. Thus, it is likely to be a characteristic feature of their common ancestor as well.
It can also be noticed that the host of each of the apicomplexans is a mammal, though it is relatively different from the host of each other. Hence, it is justified to claim that the common ancestor of apicomplexans likely had a mammalian host.
Therefore, it can be concluded that unlike other alveolates, parasitic lifestyle and mammalian host are suitably appropriate for the common ancestor of apicomplexans.
Want to see more full solutions like this?
Chapter 26 Solutions
Life: The Science of Biology
- Which part of the bronchial tree contains ciliated simple columnar epithelium as seen in the photo below 1. Bronchi 2. Bronchioles 3. Respiratory bronchioles 4. Terminal bronchiolesarrow_forwardRespiratory Structures of a Blue Crab / Portunus Parameter Identification/Description/Enumeration Number of gill pairs Accessory respiratory structures (if any) and their respective function(s) Functions of the gillsarrow_forwardRespiration In Chordata be by 1-Lungs 2-Trachea 3- Not any of the abovearrow_forward
- Why do the lungs deflate so quickly when the pluck is detached from the air source? What tissue causes thelungs to collapse?arrow_forwardDescribe the function of these terms and describe where they are located: main bronchus, trachea, alveoli.arrow_forwardFetal Pig Thoracic Cavity Please refer to the image to answer the question Describe the texture, colors, and functions of the structures that are part of the thoracic cavity. Compare the trachea to the esophagus in terms of their texture and how that relates to the functions of the two. Explain the general appearance of the pig's lungs are they balloon-like or sponge-like? Remember that they never functioned as respiratory organs before the fetal pigs were scarficied.arrow_forward
- Why cutaneous respiration does not occur in shark's skin ?arrow_forwardMatch each organ to the system or function with which it is associated. lateral lines gills tracheae 1. respiratory metanephridia 2. digestive ganglia 3. excretory foot (mollusc) 4. circulatory 5. nervous and sensory gizzardarrow_forwardWhy do avian lungs are unique compared with other vertebrates? state their comparison.arrow_forward
- List corresponding functions of these major respiratory organs in frogs 1. Nares 2. Buccal cavity 3. Glottis 4. Epiglottis 5. Larynx 6. Lungs Include the references.arrow_forwardWhat would be the best exaplnation as to why a left lung collapsed from a skatboarding injury, exaplain why the other answers are correct or not A - The rib punctured the lung and the air from the alveoli escaped. B - The rib punctured the intercostal muscles and they cannot expand. C - The rib punctured the pleural membrane and air seeped into the cavity. D - The rib disrupted the activity of the Type II cells. E - None of these.arrow_forwardWhat do you mean by alveolar glands?arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning