Question 1

A gametophyte is a what?&#10;A)a haploid fungi spore&#10;B)a haploid multicellular plant&#10;C)a haploid animal gamete

Accepted Answer

A gametophyte is a haploid multicellular plant that produces gametes, which fuse during fertilization to form a diploid zygote. Gametophytes are found in the life cycles of plants that undergo alternation of generations, such as mosses and ferns.

Question 2

A cell that has only one set of chromosomes and thus, one set of genes is said to be what?&#10;A)diploid&#10;B)haploid&#10;C)monoploid

Accepted Answer

A cell that has only one set of chromosomes and thus, one set of genes is said to be haploid.

Question 3

A cell that is said to be haploid has&#10;A)two sets of chromosomes.&#10;B)one set of chromosomes.&#10;C)an abnormal set of chromosomes.

Accepted Answer

A haploid cell only has one set of chromosomes, while a diploid cell has two sets. This is important in sexual reproduction, as haploid gametes from two parents combine to form a diploid zygote.

Question 4

Meiosis reduces the diploid number of chromosomes by half to prevent the number from ____ after sexual reproduction.(Outcome #2)&#10;A)increasing&#10;B)decreasing&#10;C)staying the same

Accepted Answer

Meiosis reduces the diploid number of chromosomes by half, from 2n to n, in order to produce haploid cells for sexual reproduction. If the diploid number of chromosomes did not reduce, the number of chromosomes would increase with each generation, leading to abnormalities and genetic disorders.

Question 5

Fertilization is a process by which&#10;A)diploid cells divide to become haploid cells.&#10;B)cells receive a nutrient-rich solution from the blood.&#10;C)two cells, each from a different individual, unite to form one new cell.

Accepted Answer

Fertilization is the process by which a sperm cell from a male and an egg cell from a female unite to form a zygote (a single cell with a full set of chromosomes). This zygote is the beginning of a new individual, with genetic information from both parents.

Question 6

In one statement, what is sexual reproduction?&#10;A)The production of two haploid cells, one from each of two parents, and the subsequent fusion of two haploid cells to form a single, unique diploid cell.&#10;B)The production of two diploid cells, one from each of two parents, and the subsequent fusion of two diploid cells to form a single, unique tetraploid cell.&#10;C)The production of two haploid cells, one from each of two parents, and the subsequent fusion of two diploid cells to form a single, unique aneuploid cell.

Accepted Answer

Sexual reproduction involves the production of haploid cells (gametes) from two different parents, and then the fusion of these gametes to form a single, unique diploid cell (zygote). This process ensures genetic diversity in offspring.

Question 7

Which of the following is not a main category of sexual life cycle in multicellular organisms?&#10;A)chiasma-dominant&#10;B)diploid-dominant&#10;C)alternation of generations

Accepted Answer

Chiasma-dominant is not a main category of sexual life cycle in multicellular organisms. The three main categories are haploid-dominant, diploid-dominant, and alternation of generations.

Deck 7: The Cellular Basis of Inheritance