salviniaLike other ferns, Salviniales are xenospores, producing spores of varying sizes. However, the leaf development of sage is unique. The upper sides of the floating leaves, which appear to face the rachis, are dorsal in morphology.

Is Salvinia homosporous or heterosporous?

Option C: Selaginella and sage are both xenobiotic plant.

Is the horsetail xenogeneic?

plants are xenogeneic or syngeneic With terminal, mostly abaxial sporangia, born in peltate, sporophylls with scales arranged in terminal oval cones. The only extant genus, Equisetum (Equisetaceae), is herbaceous and homosporous.

Are Selaginella and Sage heterosporous?

Selaginella and sage are heterosporous plants, which means they produce two different types of spores. Therefore, the formation of seeds or seed habit is the most important step in sexual reproduction and evolution.

Is Salvinia a Heterophyllus?

(i) Salvinia is Heterophylla and Heterospora no root. (ii) Pinus is a mycorrhizal gymnosperm. … (iv) Male or female cones or strobili may be on the same tree (Cycas) or on different trees (Pinus).

Salvia species profile

42 related questions found

Is Selaginella a xenobiotic fern?

Marsylanaceae and Salvia, known as heterospores. …All species of the genus Selaginella are heterosporous; that is, they produce spores of two sizes, the larger ones called megaspores and the smaller ones called microspores. Macrospores develop into female gametophytes and microspores develop into male gametophytes.

Which one is the alien?

(b) from the following salvinia is xenogeneic. Heterospores are the production of spores of two different sizes and two different developmental patterns. Small spores are called microspores and larger ones are called megaspores.

Which is xenogeneic?

xenogeneic is Sporophytes of land plants produce spores of two different sizes and sexes. The smaller microspores are male and the larger macrospores are female. …this is happening as part of the temporal evolution of gender differentiation.

Is Pinus a heterosporous plant?

Pine is a monoecious gymnosperm with male and female cones on the same plant, which are produced on separate cones. … they are heterosporous plantswhich means they produce two different types of spores.

Which is not a xenobiotic fern?

Ferns. Dryopteris produces only one type of spore (homospore).

Does Strobili exist in Salvinia?

The sporophylls are compactly arranged into structures called cocci or cones. Figure C shows Salvinia.It is a aquatic ferns. It also belongs to ferns.

Is Dryopteris homospore or heterospore?

> Option B: Dryopteris is a fern, but it is fellow. It produces 32-64 haploid spores within each sporangium.

How do you know if lycopodium is homosporous or heterosporous?

stone pine is compatriots—All spores are about the same size. Selaginella and isospores are heterospores – spores come in two different sizes, microspores and macrospores.

Sibling or foreign?

Among ferns, most plants are homosporous (produce similar kinds of spores), such as Lycopodium. However, genera such as Selaginella and Salvia are heterosporous (producing both macrospores and microspores). gymnosperms pines and cycads, also xenogeneic.

Is it an example of xenogeneity?

Heterosporosis is a phenomenon in which two types of sporulation are formed, namely smaller microspores and larger megaspores. …an example of heterospores is Selaginella, Sage and Massilia etc..

Are bryophytes xenobiotics?

Bryophytes are not xenobiotic. They are homosporous – meaning they produce only one type of spore.

What are the evolutionary advantages of xenospores?

Zygosporium produces different spore types, resulting in parthenophytesso there is no possibility of intra-gametophyte selfing, and spores/gametophytes can develop towards specialization in their parthenogenetic roles (eg female gametophytes can be produced from larger spores and can self…

Which of the following is an example of a xenobiotic fern?

Full answer:

Selaginella and Sage are two examples of heterosporous ferns.

Is Manjianghong a heterosporum fern?

Man Jianghong is xenobiotic and carry thick sori on short stems surrounded by a layer of parenchyma called the sorophore envelope (Nagalingum et al., 2006).

Which of the following is an example of a heterosporidium?

Selaginella, salvinia is an example of the heterosporous fern.

Why is Selaginella called heterospores?

Explanation: Spores are called megaspores because of their large size.because Selaginella has microspores and macrosporesthe plants are called heterosporous plants.

Which members are called Hornworts?

Daylily is a Bryophyte (a group of non-vascular plants) that make up Anthocerotophyta (/ˌænθoʊˌsɛrəˈtɒfɪtə, -toʊˈfaɪtə/). The common name refers to the elongated horn-like structure known as the sporophyte.

Is Selaginella a Fern?

Selaginella, commonly referred to as thorn or arborvitae, has been around for over 400 million years.These plants look more like mosses than ferns, but technically considered a fern ally… The genus Selaginella consists of more than 700 species, most of which are native to the tropics.