What is Heteromorphic alternation of generations?

Heteromorphic alternation of generation occurs in organisms in which the haploid gametophyte phase and diploid sporophyte phase are different in form.

What is the definition of alternation of generations in biology?

Definition of alternation of generations : the occurrence of two or more forms differently produced in the life cycle of a plant or animal usually involving the regular alternation of a sexual with an asexual generation.

What do you mean by isomorphic and heteromorphic alternation of generation?

In an isomorphic alternation of generations (found in some algae, for example) the sporophyte and gametophyte are morphologically similar or identical; in a heteromorphic alternation of generations they are dissimilar (e.g. in mosses the gametophyte is the dominant and conspicuous generation, whereas in higher plants …

What is the alternation of generations quizlet?

A life cycle in which there is both a multicellular diploid form, the sporophyte, and a multicellular haploid form, the gametophyte; characteristic of plants.

What is Homothallic alternation of generation?

Nonheterothallic (homothallism): Describes a reproductive system where the sexual fusion of two amoebae carrying different mating types does not occur, and is replaced by either apogamy or homothallism. From: Myxomycetes, 2017.

What is sporophytic generation and Gametophytic generation?

The sexual phase, called the gametophyte generation, produces gametes, or sex cells, and the asexual phase, or sporophyte generation, produces spores asexually. In terms of chromosomes, the gametophyte is haploid (has a single set of chromosomes), and the sporophyte is diploid (has a double set).

What is alternation of generations biology quizlet?

Alternation of Generations. This term refers to the life cycle of most plants in which the generations alternate between haploid gametophytes and diploid sporophytes. All embryophytes and some algae undergo this process.

What is alternation of generations quizlet?

Alternation of Generations. This term refers to the life cycle of most plants in which the generations alternate between haploid gametophytes and diploid sporophytes. All embryophytes and some algae undergo this process. Dioecious.

What is a biphasic life cycle?

The biphasic life cycle arose early in evolution, then, shortly after the first multicellular organisms evolved as clones of flagellated cells linked together by interactions through ECM; selective pressures acting independently on the two phases of the life cycle led to the origin of the different metazoan tissue …

What is a homothallic and heterothallic?

Hint: Homothallism refers to the condition of having both female and male reproductive structures on the same thalli. On the other hand, the condition of having a female and the male reproductive structure on different thalli is known as heterothallism.