The importance: Mycorrhizae in colonization of land. Concept introduction: The term Mycorrhizae is derivative of Greek words "mukés", which means fungus , and "rhiza," which meaning roots. Mycorrhizal fungi first arrived on earth about 450 million years ago. Life on land before the evolution of plants has been labeled as "green slime”, because it was predominated by cyanobacteria, algae, various heterotrophic species, and fungi. Mycorrhiza forms symbiotic relationships with roots of the plant. They form close association with the plant roots in order they can draw nutrients from the soil. This association between fungus and plant promotes plant growth. Similar associations might have been essential for the earliest land plants that did not have roots. Thus, beneficial relationships between plants and fungi existed from the early period and thus helped plants in colonization of land.

Question

Want to see the full answer?

Answer 1

Question

Chapter 31.3, Problem 2CC

Summary Introduction

To describe: The importance: Mycorrhizae in colonization of land.

Concept introduction: The term Mycorrhizae is derivative of Greek words "mukés", which means fungus, and "rhiza," which meaning roots. Mycorrhizal fungi first arrived on earth about 450 million years ago. Life on land before the evolution of plants has been labeled as "green slime”, because it was predominated by cyanobacteria, algae, various heterotrophic species, and fungi.

Mycorrhiza forms symbiotic relationships with roots of the plant. They form close association with the plant roots in order they can draw nutrients from the soil. This association between fungus and plant promotes plant growth. Similar associations might have been essential for the earliest land plants that did not have roots. Thus, beneficial relationships between plants and fungi existed from the early period and thus helped plants in colonization of land.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

19. On the diagram below a. Label the three pictures as: DNA; polypeptide; or RNA. b. Label the arrows as: translation or transcription/RNA processing. c. Add the following details to the diagram. Promoter region TATA box Transcription start site Transcription terminator Intron (A,B,C,D) Exons (1,2,3,4,5) Splice sites 5' cap 5' UTR (untranslated region) 3' poly A tail 3' UTR (untranslated region) Translational start (AUG) Translational stop (UGA, UAG, or UAA) N and C ends of polypeptide 0000

Match the letter labels in the figure below to the terms. Some letter labels are not used. MNNNNNNIN M C B A M D F E H K G 8

The diagram below illustrates a quorum sensing pathway from Staphylococcus aureus. Please answer the following questions. 1. Autoinduction is part of the quorum sensing system. Which promoter (P2 or P3) is critical for autoinduction? 2)This staphylococcus aureus grows on human wounds, causing severe infections. You would like to start a clinical trial to treat these wound infections. Please describe: a) What molecule do you recommend for the trial. Why? b) Your trial requires that Staphylococcus aureus be isolated from the wound and submitted to genome sequencing before admittance. Why? What are you testing for? 3) If a mutation arises where the Promoter P3 is constitutively active, how would that influence sensitivity to AIP? Please explain your rationale. 4) This pathway is sensitive to bacterial cell density. Describe two separate mutation that would render the pathway active independent of cell density. Briefly explain your rationale. Mutation 1 Mutation 2