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Understanding Biology

Kenneth A. Mason, Tod Duncan, George B. Johnson

Chapter 25

Fungi - all with Video Answers

Educators

Section 1

Fungi Have Unique Reproductive and Nutritional Strategies

03:39

Problem 1

Mycelia composed of hyphae support the high rates of growth seen in many fungi because they
a. have cell walls made of chitin, which supports nutrient uptake.
b. have very thin cell walls, which allow for efficient nutrient absorption.
c. have a high surface-area-to-volume ratio to increase rates of nutrient absorption.
d. are more easily hidden in soils and other substrates and are thus poorly predated.

Caroline Jones
Caroline Jones
Numerade Educator
03:47

Problem 2

The cell walls of fungi contain chitin, which is a modified form of cellulose. If you isolated chitin from cell walls of fungi and analyzed the types of atoms present, which elements would you find?
a. Nitrogen, carbon, hydrogen, and oxygen
b. Nitrogen, sulfur, phosphorus, and oxygen
c. Carbon, hydrogen, and oxygen
d. Sulfur, oxygen, phosphorus, and selenium

Caroline Jones
Caroline Jones
Numerade Educator