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Chapter 23: Q.13 (page 607)

Alternation of generations describes which of the following?

a. The haploid form can be multicellular; the diploid form is unicellular.
b. The haploid form is unicellular; the diploid form can be multicellular.
c. Both the haploid and diploid forms can be multicellular.
d. Neither the haploid nor the diploid forms can be multicellular.

Short Answer

Expert verified

The correct answer isoption c, that is, both the haploid and diploid forms can be multicellular.

Step by step solution

01

Introduction

A reproductive cycle witnessed insome of the protists in which asexual reproductive phase interchanges with an asexual reproductive phase is known as alternation of generations.

02

Explanation

The changeability between thediploid (sporophyte) and thehaploid (gametophyte) stages is known asalternation of generation in protists. In this both the haploid gametophyte and the diploid sporophytecannot be unicellular, they both are multicellular.

Thus, optionsa, b, and d are incorrect.

The variability strategy used by protists in which the haploid gametophyte stage substitutes with the diploid sporophyte stage is known as thealternation of generations. In the protists, both the diploid and haploid forms aremulticellular.

Hence, the correct answer is option c.

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Most popular questions from this chapter

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b. They occupy the apex producer niche.

c. They enter symbiotic relationships with animals.

d. They recycle nutrients back into the carbon and nitrogen cycles.

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