Question

A diploid, multicellular life-cycle stage that gives rise to haploid cells by meiosis is called a ________.

a. sporophyte

b. gametophyte

c. spore

d. gamete

Short answer

The correct answer is option a

Step-by-step solution

Step 1. Introduction

Plants have three different life cycle that is haploid (n), diploid (2n), and haploid-diploid or alternation of generation.

Step 2. Explanation of the correct options

Option a is correct because the sporophyte is a diploid multicellular individual of the plant which produces haploid spores by meiosis.

Step 3. Explanation of the incorrect option

Option b is incorrect because gametophyte is a haploid organism or sexual phase of a plant that shows alternation of generations and produces gametes.

Option c is incorrect because a spore is a haploid cell produced by sporophytes through meiosis. They can produce new individuals without fusion with another cell.

Option d is incorrect because gamete is gametes or sex cells are haploid cells that fuse with other reproductive sex cells to produce a zygote.