Campbell Biology
Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
bartleby

Concept explainers

Question
Book Icon
Chapter 31, Problem 6TYU
Summary Introduction

To write: To test the given hypothesis.

Concept introduction: Lichen refers to symbiotic association formed between a fungus and an alga or a cyanobacterium. Its growth is seen in various forms on the surfaces of rotting logs, trees, rocks, and roofs.

Given: Two hypotheses are proposed for lichen growth forms:

  1. a) Hypothesis 1: “Crustose, foliose, and fruticose lichens, of which each represent a monophyletic group”
  2. b) Hypothesis 2:“Each lichen growth form represents convergent evolution by taxonomically diverse fungi”

Blurred answer
Students have asked these similar questions
Algae are autotrophs and can have photosynthesis, however, evolutionary evidence suggests that plants shared a common ancestor with only green algae and are closest relatives of Charophytes. What evidences support this statement? How an algal cell is different from fungal cells, even if both are eukaryotes? Why slime mold is a protist not a fungus even if it does not have chloroplast?
Lichens are said to be composite organisms made up of two very different types of organisms: usually a fungus and an alga (or in a few lichens, a fungus and a Cyanobacterium). (Alga is the singular of algae.) How do these two types of organisms work together to become a functional composite organism? That is, what does each organism provides to the relationship to make it successful? Think about a lichen living on the face of a rock.
Health professionals refer to fungal skin diseases as "“tineas" and name them according to the region affected. Fungal skin diseases are persistent, in part, because fungi can penetrate deeper layers of skin than can ointments and creams. There are fewer antifungal drugs than ones, and antifungals often have more severe side effects. Reflect on the evolutionary relationships among bacteria, fungi, and humans. 1. List 5 different "Tineas" to show the connection between the name and the body parts affected from them. 2. Are fungi unicellular or multicellular organism? 3. Why it is harder to fight fungi than bacteria? 4. Why antifungals have more severe side effects?
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning