Life

Difference Between Unilocular and Plurilocular Sporangia

Difference Between Unilocular and Plurilocular Sporangia

The main difference between unilocular and plurilocular sporangia is that unilocular sporangia consist of a single enlarged cell, which undergoes meiosis followed by mitosis, forming haploid zoospores whereas plurilocular sporangia consist of a large number of cuboidal cells, which develops into diploid zoospores.

  1. What is Plurilocular?
  2. What is clump formation in Ectocarpus?
  3. What is the life cycle of Ectocarpus?
  4. Where is Ectocarpus found?
  5. What is a Synangium?
  6. Are Sporangia present in the branches of Ectocarpus?
  7. What is clump formation?
  8. What is the meaning of Ectocarpus?
  9. What is the life cycle of Laminaria?
  10. Which show is Isogamy with non flagellated gametes?
  11. Which type of life cycle is shown by Fucus?

What is Plurilocular?

Plurilocular sporangia- large number of cuboidal cells, each cell develops into zoospores (2N) each develops into sporophyte (clone). More common at warmer temperatures. 2. Unilocular sporangia- one enlarged cell undergoes meiosis, then several mitosis occur to 32 or 64 (1N) zoospores.

What is clump formation in Ectocarpus?

The active male gametes cluster around female gamete and cling themselves by their anterior flagellum. It is known as clump formation. ... The gametes fuse to form a diploid zygote. In other species of Ectocarpus gametes from same plant can fuse to form a zygote showing isogamous reproduction.

What is the life cycle of Ectocarpus?

Like many brown algae, Ectocarpus has a haploid–diploid life cycle that involves alternation between two multicellular generations, the sporophyte and the gametophyte (Fig.

Where is Ectocarpus found?

Ectocarpus is a cosmopolitan marine brown seaweed found mostly as free-floating filaments in intertidal to sublittoral zones of temperate regions. It can also easily grow as epiphytes on other seaweeds.

What is a Synangium?

1 : the peripheral part of an arterial trunk from which the branches arise in a lower vertebrate — compare pylangium. 2 : a sorus (as in ferns of the family Marattiaceae) made up of sporangia variously united or cohered into a compound structure.

Are Sporangia present in the branches of Ectocarpus?

Ectocarpus reproduces by both asexual and sexual methods. The asexual reproduction takes place by the formation of biflagellate zompores. These zoospores may be haploid produced in one-celled unilocular sporangia. ... The sporangia are borne terminally and singly on lateral branches.

What is clump formation?

Clump formation occurs with lead shot due to the escape of hot powder gases passed the intermediate material into the shot load. The instant great heat effect on the shot load causes a welding of the shot pellets, increasing the hazardous area and impairs the patterning.

What is the meaning of Ectocarpus?

Ectocarpus is a genus of filamentous brown alga that is a model organism for the genomics of multicellularity. Among possible model organisms in the brown algae, Ectocarpus was selected for the relatively small size of its mature thallus and the speed with which it completes its life cycle.

What is the life cycle of Laminaria?

Laminaria exhibits a diplohaplontic life cycle, with macroscopic sporophytes followed by a microscopic gametophyte with an oogamous mode of sexual reproduction (Fig. 3.11).

Which show is Isogamy with non flagellated gametes?

Isogamy with non-flagellated of gametes is seen is Spirogyra can reproduce both by sexual and asexual (vegetative) means. They reproduce sexually by conjugation in which two non-flagellated morphologically similar but physiologically different gametes (isogamous) fuse together.

Which type of life cycle is shown by Fucus?

Solution : Fucus shows the diplontic life-cylic.

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