Procedure 1: Rhizopus Structure and Life Cycle Black bread mold, Rhizopus, is a typical example of division Zygomycota. It has a complex life cycle involving both sexual and asexual structures. A diagam of the life cycle is shown in Figure 11.2. 1. Study Figure 11.2 and locate the following structures: a. Mycelium: the network of filaments or hyphae. b. Sporangium: the capsule that produces spores, located at the end of the upward-growing Sporangiophore; site of asexual spore formation. c. Gametangia: thickened structure that grows at the tip of two hyphae that have grown towards each other; the two gametangia fuse to form the zygote. d. Zygospore: the thick, black protective coat that forms around the zygote; site of sexual spore formation. 84 Kingdom Fungi Exercise 11 ygospore, spores asexual fertation gametes IN sporangium diploide haploid sexual + strain + strain hyphae strain -strain — sporangium spores 20 germination of rygospore Drawing of Rhizopus structures sporangium sporangiophore gametangia mycelium Figure 11.2. Divisions, characteristics, and examples of organisms from kingdom Fungi. 2. Now obtain a specimen of Rhizopus and examine it under a dissecting scope. Identify as many of the above structures as possible. Draw and label what you observe below. Exercise 11 Kingdom Fungi 85
Procedure 1: Rhizopus Structure and Life Cycle Black bread mold, Rhizopus, is a typical example of division Zygomycota. It has a complex life cycle involving both sexual and asexual structures. A diagam of the life cycle is shown in Figure 11.2. 1. Study Figure 11.2 and locate the following structures: a. Mycelium: the network of filaments or hyphae. b. Sporangium: the capsule that produces spores, located at the end of the upward-growing Sporangiophore; site of asexual spore formation. c. Gametangia: thickened structure that grows at the tip of two hyphae that have grown towards each other; the two gametangia fuse to form the zygote. d. Zygospore: the thick, black protective coat that forms around the zygote; site of sexual spore formation. 84 Kingdom Fungi Exercise 11 ygospore, spores asexual fertation gametes IN sporangium diploide haploid sexual + strain + strain hyphae strain -strain — sporangium spores 20 germination of rygospore Drawing of Rhizopus structures sporangium sporangiophore gametangia mycelium Figure 11.2. Divisions, characteristics, and examples of organisms from kingdom Fungi. 2. Now obtain a specimen of Rhizopus and examine it under a dissecting scope. Identify as many of the above structures as possible. Draw and label what you observe below. Exercise 11 Kingdom Fungi 85
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Use the picture below of the Rhizopus fungi and draw a sketch of what you observe. Be sure to also label the sporangium, sporangiaphore, and the hyphae.
![](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F96a22982-671f-4423-bb15-a079ccfa003b%2F749444cb-29c7-40d9-a967-90e2a437fe00%2Fgfp1gb8_processed.jpeg&w=3840&q=75)
![Procedure 1: Rhizopus Structure and Life Cycle
Black bread mold, Rhizopus, is a typical example of division Zygomycota. It has a complex life cycle
involving both sexual and asexual structures. A diagam of the life cycle is shown in Figure 11.2.
1. Study Figure 11.2 and locate the following structures:
a. Mycelium: the network of filaments or hyphae.
b. Sporangium: the capsule that produces spores, located at the end of the upward-growing
Sporangiophore; site of asexual spore formation.
c. Gametangia: thickened structure that grows at the tip of two hyphae that have grown
towards each other; the two gametangia fuse to form the zygote.
d. Zygospore: the thick, black protective coat that forms around the zygote; site of sexual
spore formation.
84 Kingdom Fungi Exercise 11
ygospore,
spores
asexual
fertation
gametes
IN
sporangium
diploide
haploid
sexual
+ strain
+ strain
hyphae
strain
-strain —
sporangium
spores
20
germination of rygospore
Drawing of Rhizopus structures
sporangium
sporangiophore
gametangia
mycelium
Figure 11.2. Divisions, characteristics, and examples of organisms from kingdom Fungi.
2. Now obtain a specimen of Rhizopus and examine it under a dissecting scope. Identify as many
of the above structures as possible. Draw and label what you observe below.
Exercise 11 Kingdom Fungi 85](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F96a22982-671f-4423-bb15-a079ccfa003b%2F749444cb-29c7-40d9-a967-90e2a437fe00%2F2vnxhj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Procedure 1: Rhizopus Structure and Life Cycle
Black bread mold, Rhizopus, is a typical example of division Zygomycota. It has a complex life cycle
involving both sexual and asexual structures. A diagam of the life cycle is shown in Figure 11.2.
1. Study Figure 11.2 and locate the following structures:
a. Mycelium: the network of filaments or hyphae.
b. Sporangium: the capsule that produces spores, located at the end of the upward-growing
Sporangiophore; site of asexual spore formation.
c. Gametangia: thickened structure that grows at the tip of two hyphae that have grown
towards each other; the two gametangia fuse to form the zygote.
d. Zygospore: the thick, black protective coat that forms around the zygote; site of sexual
spore formation.
84 Kingdom Fungi Exercise 11
ygospore,
spores
asexual
fertation
gametes
IN
sporangium
diploide
haploid
sexual
+ strain
+ strain
hyphae
strain
-strain —
sporangium
spores
20
germination of rygospore
Drawing of Rhizopus structures
sporangium
sporangiophore
gametangia
mycelium
Figure 11.2. Divisions, characteristics, and examples of organisms from kingdom Fungi.
2. Now obtain a specimen of Rhizopus and examine it under a dissecting scope. Identify as many
of the above structures as possible. Draw and label what you observe below.
Exercise 11 Kingdom Fungi 85
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