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Chapter 25: Problem 1

In the blastocladiomycota, meiosis in the sporangium produces $________ zoospores. a. haploid b. diploid c. eight d. four

Short Answer

Expert verified
a. haploid

Step by step solution

01

Understand the Process

Meiosis is a type of cell division that reduces the chromosome number by half. It produces four daughter cells, each with half the number of chromosomes of the parent cell.
02

Identify the Organism

Blastocladiomycota is a class of fungi. In fungi, meiosis produces spores, which can be either haploid or diploid.
03

Determine Chromosome number of Resulting Spores

Since meiosis reduces the chromosome number by half, the resulting spores are haploid. This means they contain a single set of chromosomes.
04

Select the Correct Option

The question asks for the type of zoospores produced after meiosis in the sporangium of Blastocladiomycota. Given that meiosis produces haploid cells, the correct answer is 'a. haploid'.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

haploid zoospores
Haploid zoospores are an essential part of the life cycle of many fungi, including Blastocladiomycota. They have only one set of chromosomes, unlike diploid cells, which have two sets. This single set of chromosomes results from meiosis, a type of cell division described in the exercise.
fungi reproduction
Fungi have unique reproductive strategies. One common method is through the production of spores. These spores can be either asexual, produced by mitosis, or sexual, produced by meiosis.
Meiosis reduces the chromosome number by half and equip the spores with genetic diversity, which is a crucial factor in the survival and evolution of fungi.
meiosis in fungi
Meiosis is crucial in fungi reproduction. It takes place within structures called sporangia. During meiosis, the chromosomes replicate once, but the cell divides twice, resulting in four daughter cells, each with half the number of chromosomes as the original cell. In fungi, these daughter cells become spores, which are usually haploid.
sporangium
A sporangium is a special fungal structure where spores are formed.
In the Blastocladiomycota, meiosis occurs within the sporangium. This process leads to the production of haploid zoospores. These sporangia play a crucial role in the reproduction and lifecycle of fungi, allowing for the dispersal and germination of new fungal individuals in suitable environments.

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Most popular questions from this chapter

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

Why do zygospores have thick coats? a. To protect them from adverse conditions such as drying out b. To help them attach to the bodies of insects and other animals that distribute them c. To act as a source of nutrition while they germinate into hyphae d. To reduce predation by small invertebrates such as nematodes

Which process is used to form spores during sexual reproduction in ascomycetes such as Morchella esculenta? a. Meiosis only b. Mitosis only c. Meiosis and mitosis d. Another process besides meiosis and/or mitosis

What makes arbuscular mycorrhizae obligate mutualists? a. They cannot exist independent of their plant host. b. They absorb soil nutrients and pass them to their host, receiving other nutrients in return. c. They cause harm to their plant host. d. Both a and \(\mathrm{b}\) e. Both b and c

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.
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