In the ovule each megaspore mother cell undergoes _____ to produce four megaspores.

Question

BlackTom AI · Accepted Answer

Question restatement: In the ovule, the megaspore mother cell undergoes _____ to produce four megaspores.

Option 1: meiosis. This is the correct process here. The megaspore mother cell (the diploid cell) divides by meiosis to produce four haploid megaspores, typically with three of them degenerating and one becoming the functional megaspore. This aligns with the standard pattern of megasporogenesis in flowering plants.

Option 2: mitosis. If the megaspore mother cell underwent mitosis, you would generate more diploid or haploid cells without the genetic reduction that meiosis provides. However, megasporogenesis requires reduction division to produce haploid megaspores, so mitosis is inappropriate here.

Option 3: germination. Germination refers to the growth of a seed embryo into a seedling, or the sprouting of a pollen grain or spore in some contexts, not to the division of the megaspore mother cell. This meaning is unrelated to megasporogenesis.

Option 4: fertilization. Fertilization is the fusion of gametes to form a zygote and occurs after pollination, not during the formation of megaspores. It does not describe the division of the megaspore mother cell.

Summary: Among the given options, meiosis uniquely accounts for the reductional division that yields four haploid megaspores from the diploid megaspore mother cell, which is the core concept of megasporogenesis in plant ovules. The other terms describe processes unrelated or incorrectly related to the formation of megaspores.

BIOL 312 BIOL 312 - Exam 3

In the ovule each megaspore mother cell undergoes _____ to produce four megaspores.

查看解析

登录即可查看完整答案

类似问题

A diploid (2n) cell undergoes meiosis. How many chromosomes will each gamete contain?

Question at position 73 Crossing over between homologous chromosomes occurs during and homologous chromosomes separate from each other during .prophase I; anaphase IIprophase II, telophase Iprophase I; anaphase Iprophase II; telophase II

Question at position 62 If a diploid cell (2n = 16) undergoes meiosis I and II, the result is:2 cells; each with 2n = 82 cells; each with 2n = 164 cells; each with n = 84 cells; each with 2n = 322 cells; each with 2n = 32

Question at position 5 Crossing over occurs in Printed Blank[input]Question Blank 1 of 1[input] 1.anaphasecytokinesistelophaseinterphasemetaphaseprophase

In humans, the main purpose of cell division by meiosis is

A diploid (2n) cell undergoes meiosis. How many chromosomes will each gamete contain?

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单

BIOL 312 BIOL 312 - Exam 3

In the ovule each megaspore mother cell undergoes _____ to produce four megaspores.

查看解析

登录即可查看完整答案

类似问题

A diploid (2n) cell undergoes meiosis. How many chromosomes will each gamete contain?

Question at position 73 Crossing over between homologous chromosomes occurs during ____ and homologous chromosomes separate from each other during ____.prophase I; anaphase IIprophase II, telophase Iprophase I; anaphase Iprophase II; telophase II

Question at position 62 If a diploid cell (2n = 16) undergoes meiosis I and II, the result is:2 cells; each with 2n = 82 cells; each with 2n = 164 cells; each with n = 84 cells; each with 2n = 322 cells; each with 2n = 32

Question at position 5 Crossing over occurs in Printed Blank[input]Question Blank 1 of 1[input] 1.anaphasecytokinesistelophaseinterphasemetaphaseprophase

In humans, the main purpose of cell division by meiosis is

A diploid (2n) cell undergoes meiosis. How many chromosomes will each gamete contain?

更多留学生实用工具

希望你的学习变得更简单

Question at position 73 Crossing over between homologous chromosomes occurs during and homologous chromosomes separate from each other during .prophase I; anaphase IIprophase II, telophase Iprophase I; anaphase Iprophase II; telophase II