What statement regarding the haplontic life cycle is incorrect?a)Mitos...
The statement that is incorrect regarding the haplontic life cycle is option A, which states that the predominant stage of its life cycle is the gametophyte stage. Let's understand the haplontic life cycle and why this statement is incorrect.
Haplontic Life Cycle:
The haplontic life cycle is a type of life cycle found in certain organisms such as algae, fungi, and some protozoa. In this life cycle, the organism spends most of its life cycle in the haploid state, meaning it has only one set of chromosomes. The diploid stage is usually short-lived and is represented by a single-celled zygote, which undergoes meiosis to produce haploid spores. These spores then divide by mitosis to form the gametophyte stage, which is the predominant stage in the haplontic life cycle.
Explanation:
a) The predominant stage of its life cycle is the gametophyte stage: This statement is incorrect because in the haplontic life cycle, the predominant stage is the gametophyte stage. The gametophyte is a multicellular haploid stage that produces gametes through mitosis. The sporophyte stage is short-lived and is represented by a single-celled zygote.
b) Sporophytes live independently: This statement is correct. In the haplontic life cycle, the sporophytes are short-lived and do not have a separate independent existence. They are dependent on the gametophyte stage for their nutrition and survival.
c) Spores are haploid in nature, and they divide during mitosis to generate gametophytes: This statement is correct. The spores produced by meiosis in the diploid zygote are haploid in nature. These spores then divide through mitosis to generate the multicellular gametophyte stage.
d) Zygote functions as a sporophyte: This statement is correct. In the haplontic life cycle, the zygote represents the sporophyte stage. It is the only diploid stage in the life cycle and functions as a sporophyte by producing haploid spores through meiosis.
In conclusion, the incorrect statement regarding the haplontic life cycle is option A, which incorrectly states that the predominant stage of its life cycle is the gametophyte stage. The correct statement is that the predominant stage is the gametophyte stage, while the sporophyte stage is short-lived.
What statement regarding the haplontic life cycle is incorrect?a)Mitos...
Gametophytes are the predominant stage in this life cycle, which is why the answer is (a). Sporophytes cannot live a life of their own free will. Spores are naturally haploid and develop into gametophytes during mitotic division. A zygote produces spores in the role of a sporophyte.
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