Question: Which one undergoes meiosis in the life cycle of algae?

For organisms with a haplontic life cycle, such as fungi and some of the green algae, the multicellular stage is haploid. In this case, as soon as the diploid zygote is formed, it undergoes meiosis to produce haploid spores inside structures called sporangia (sporangium, singular).

Do algae undergo meiosis?

Either immediately or at some later time, a diploid cell directly or indirectly undergoes a special reductive cell-division process (meiosis). … In algae, as in plants, haploid cells in this stage are called gametophytes because they produce gametes.

In which algae structure does meiosis occur?

On the sporophyte, specialized structures called sporangia form, and inside of them, haploid cells (spores, 1n) are formed by meiosis. The spores are released and can germinate, starting the cycle over again.

What follows meiosis in the life cycle?

Spermatogenesis follows the pattern of meiosis more closely than oogenesis, primarily because once it begins (human males start producing sperm at the onset of puberty in their early teens), it is a continuous process that produces four gametes per spermatocyte (the male germ cell that enters meiosis).

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What type of life cycle is present in algae?

There are four types of life cycle in algae such as Triphasic Life Cycle, Diplohaplontic Life Cycle, Diplontic Life Cycle, and Haplontic Life Cycle.

What is colonial algae?

Colonial alga are algae in which cells resembling free swimming unicells form groups. They may be large and elaborately interconnected as in Volvox or smaller and relatively simple as in Synura. … Each cell bears two flagella, whose beatings propel the colony, through the water with a smooth rolling motion.

Are algae photosynthetic?

Algae are a diverse group of predominantly aquatic photosynthetic organisms, including cyanobacteria, green algae and other eukaryotic algae. They account for more than 50% of the photosynthesis that takes place on Earth. … Algae as solar-driven cell factories absorb and fix carbon dioxide efficiently.

Which algae exhibits a Diplontic life cycle?

Fucus algae exhibit diplontic life cycle.

Where does meiosis occur in haploid algae?

Organisms that are haploid, e.g. algae such as Volvox, Spirogyra, etc. show meiosis in the zygote. The haploid gametes fuse to produce a diploid zygote, which undergoes meiosis to produce haploid spores, which divide mitotically to produce gametophyte. A zygote is the only diploid stage in these haploid organisms.

What is the role of meiosis in the life cycle of higher plants such as angiosperms?

Sexual eukaryotes generate gametes using a specialized cell division called meiosis that serves both to halve the number of chromosomes and to reshuffle genetic variation present in the parent.

What type of cells undergo meiosis?

What types of cells undergo meiosis? Only those that produce gametes, e.g. eggs in females and sperm in males.

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What is life cycle of fungi?

In the life cycle of a sexually reproducing fungus, a haploid phase alternates with a diploid phase. The haploid phase ends with nuclear fusion, and the diploid phase begins with the formation of the zygote (the diploid cell resulting from fusion of two haploid sex cells).

Where does meiosis take place in slime molds?

A stalk arises from the plasmodium, and nuclei within the stalk cells divide by meiosis. Knobs called sporangia develop at the end of the stalk and fill with haploid spores. The spores are shed and removed by the wind when the stalk dries.