The main difference between conceptacle and receptacle in Fucus is that conceptacle is a specialized cavity, containing reproductive organs, but receptacle is the container of several conceptacles. Furthermore, conceptacle contains reproductive tissues, but receptacle contains vegetative tissues.

What is a conceptacle wall?

A flask-shaped cavity in the thallus of some brown algae, e.g. Fucus, in which gametangia are formed. A female conceptacle is lined with unbranched sterile hairs or *paraphysis, and the *oogonia develop from short stalks arising from the chamber wall.

What is receptacle in Sargassum?

Sexual reproduction in Sargassum is oogamous. The male sex organs are called antheridia and the female oogonia. The sex organs develop in special flask shaped cavity called conceptacle. These conceptacles are present is specially modified laterals called receptacles (Fig.

What is conceptacle in biology?

Conceptacles are specialized cavities of marine and freshwater algae that contain the reproductive organs. They are situated in the receptacle and open by a small ostiole. Conceptacles are present in Corallinaceae, and Hildenbrandiales, as well as the brown Fucales.

What does the receptacle do?

receptacle Biological structure that serves as a container for reproductive cells or organs in plants. In flowering plants, the receptacle is the enlarged end of a stalk to which the flower is attached. In some seaweeds, it is the part that seasonally becomes swollen and carries the reproductive organs. ...

Receptacles with Conceptacles Sargassum

22 related questions found

What is the difference between outlet and receptacle?

A receptacle is always an outlet but an outlet is not only a receptacle. ... An outlet is defined as “A point on the wiring system at which current is taken to supply utilization equipment”. A receptacle however has always been something that an attachment plug is connected to.

Is receptacle and thalamus the same?

In angiosperms, the receptacle or torus (an older term is thalamus, as in Thalamiflorae) is the thickened part of a stem (pedicel) from which the flower organs grow. In some accessory fruits, for example the pome and strawberry, the receptacle gives rise to the edible part of the fruit.

What is Cryptoblast in botany?

: a sterile conceptacle (as in plants of the genus Fucus)

What does antheridium mean?

: the male reproductive organ of some cryptogamous plants.

What is Antherozoid in biology?

The motile male gamete of algae, fungi, bryophytes, clubmosses, horsetails, ferns, and certain gymnosperms. Antherozoids usually develop in an antheridium but in certain gymnosperms, such as Ginkgo and Cycas, they develop from a cell in the pollen tube.

Is Sargassum a phytoplankton?

Sargassum is a genus of brown (class Phaeophyceae) macroalgae (seaweed) in the order Fucales. Numerous species are distributed throughout the temperate and tropical oceans of the world, where they generally inhabit shallow water and coral reefs, and the genus is widely known for its planktonic (free-floating) species.

Is Sargassum a pelagic?

Sargassum is a genus of brown seaweed. Most sargassum is found in shallow coastal tropical and temperate marine waters. Pelagic sargassum is found primarily in the western portion of the North Atlantic gyre. ...

Does Sargassum have cell wall?

Alginates, ascophyllans and fucoidans constitute the matrix phase of the cell wall of Sargassum.

What is receptacle and Conceptacle?

The main difference between conceptacle and receptacle in Fucus is that conceptacle is a specialized cavity, containing reproductive organs, but receptacle is the container of several conceptacles. Furthermore, conceptacle contains reproductive tissues, but receptacle contains vegetative tissues.

What are the gametes of Fucus called?

The antheridiophores have terminal inflated antheridia on their branches; these undergo meiosis and form 64-128 biflagellate male gametes (antherozoids).

Is Fucus a plant?

Fucus are perennial algae, some of which have a life span of up to four years. ... Bladder wrack (Fucus vesiculosus) is a species of brown algae that grows on the northern coasts of the Atlantic and Pacific oceans and the North and Baltic seas.

What are archegonia and antheridia?

An archegonium (pl: archegonia), from the ancient Greek ἀρχή ("beginning") and γόνος ("offspring"), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamete. The corresponding male organ is called the antheridium.

Do angiosperms have antheridia and archegonia?

In angiosperms, archegonia and antheridia are absent. So, the correct answer is option D, angiosperms.

What is the role of Conceptacle in Fucus?

Known also as wracks, the Fucus brown seaweeds are always diploid and meiosis takes place before the gametes are formed. The reproductive organs of the macroalgae consist of receptacles and conceptacles. Gamete production takes place in specialized crypt-like structures known as conceptacles.

What is Cryptoblast where it is found?

Leaf: ... On both surfaces of the leaf there are many sterile conceptacles, the cryptostomata or cryptoblasts (Fig. 3.117D). These are flask-shaped with many sterile unbranched filaments, the paraphyses developed from the base. The paraphyses protrude out through the opening present on the outer side, the ostiole.

Is sargassum unicellular or multicellular?

Anabaena is Cyanobacteria, Laminaria, Sargassum, Gelidium, Gracilaria are multicellular algae. Volvox is unicellular colonial algae.

What is called receptacle?

1 : one that receives and contains something : container. 2 [New Latin receptaculum, from Latin] a : the end of the flower stalk upon which the floral organs are borne. b : a structure or tissue (as of a fungus or fern) bearing spores or sporangia.

What do you call an item that is also known as receptacle?

A receptacle is an object which you use to put or keep things in. [formal] Synonyms: container, case, box, holder More Synonyms of receptacle.