Question

1)If we study septate and coenocytic hyphae of equal length from two fungi species, then the coenocytic hyphae is unique because

A. It is haploid

B. It has fewer pores in the wall

C. It has more cytoplasm streaming

d.Has cellulose in the cell walls

2)The process that makes the zygospore in molds that has the opposite effect on chromosome number compared to meiosis is __

A. Mitosis

B. Budding

C. Karyogamy

D. Plasmogamy

D. Has cellulose in the cell walls

3)Which phylum of fungi consists of yeast, truffles, lichen, and morels? *

A. Ascomycetes

B. Basidiomycetes

C. Chytrids

D. Glomeromycetes

E. Zygomycetes

4)Of the following species, which of the following is most likely to go extinct? *

A. Species A- Does not have a lot of genetic variation, can eat a lot of different foods, does not get hunted a lot, and lives on hundreds of miles of coastline

B. Species B- Has a lot of genetic variation, can eat a lot of different foods, does get hunted a lot, and lives in most temperate regions

C. Species C- Does not have a lot of genetic variation, can eat only one food, does not get hunted a lot, and lives on an island

D. Species D- Has a lot of genetic variation, can eat a lot of different foods, does not get hunted a lot, and lives on the entire continent

Answer 1

1. C

Coenocytic means multinucleated. This type of condition is present in fungus belonging to the division zygomycota and oomycota. Multinucleated condition arise because the cells are not completely separated from each other. This type of fungus is aseptate.

But the question is asking about septate fungus which is having cell wall in between the cells. The cells are separated from each other. If the cell was were having less number of pores in between them, then the nucleus would not be able to flow from one cell to another. So the cell wall will have more number of pores in it.

With the help of these pores, cytoplasm will move from one cell to another and this is called cytoplasmic streaming. If the cell is having multiple nucleus and it is septate, then it will show higher rate of cytoplasmic streaming.

2. Karyogamy

Zygospore is a thick walled resistance for formed by the fusion of nucleus from two different fungal strains. This is a primitive type of sexual reproduction seen in the members of kingdom fungus. It is formed during unfavourable conditions. It is formed by karyogamy, which is the fusion of two haploid nuclei to result in the formation of one diploid nucleus. It is the opposite of process in which one diploid nucleus divides to form haploid nucleus.

According to the guidelines, only first question can be answered. Please give a good rating.