Which are spore producing structures?
It produces spores in saclike structures called asci. The more primitive fungi produce spores in sporangia, which are saclike sporophores whose entire cytoplasmic contents cleave into spores, called sporangiospores.
Which of these structures produce spores quizlet?
The sporangia is the structure which produces spores.
What are some spore producing plants?
Plant spores are produced by the organisms we can usually recognize. The major types of plants that form spores are algae, mosses, and ferns. Algae are the simplest of these plants, and can range from tiny, single celled things to large, multi-celled plants that cover your backyard pond.
Which of these structures produce spores in mosses?
Mature bryophytes have a single sporangium (spore-producing structure) on each sporophyte. The sporangium generally terminates an elongate stalk, or seta, when the sporangium is ready to shed its spores.
Which structure is responsible for making spores through meiosis?
The sporophyte has multicellular organs called sporangia (singular, sporangium) that produce the spores. Within a sporan- gium, diploid cells called sporocytes, or spore mother cells, un- dergo meiosis and generate the haploid spores.
Which structure is dominant in moss?
In mosses, the dominant stage is the haploid generation (the gametophyte). This means that the green, leafy gametophytic tissue is haploid (has only one set of chromosomes). The gametophyte refers to all organs and tissues that are a part of the haploid generation.
Which of these structures produce spores in mosses quizlet?
The seta, or stalk, transports the nutrients to the sporangium, which produces spores. Rhizoids, which resemble the roots of vascular plants, anchor the gametophytes to a substrate. Rhizoids are not vascular structures. Arrange the events in the life cycle of mosses in the flowchart below.
Do ferns produce spores?
Ferns generally reproduce by producing spores. … However, unlike flowering plants, ferns do not have flowers or seeds; instead, they usually reproduce sexually by tiny spores or sometimes can reproduce vegetatively, as exemplified by the walking fern.
What structures are found in mosses?
The main moss structure is the gametophyte, which functions like a moss’s “stem” and “leaves.” A moss “stem” is called the axis, and this part of the moss supports leaf-like structures. Phyllids are the leaf-like structures that carry out photosynthesis, transforming sunlight into sugars the moss uses for food.
What is the name of the structure produced when the moss spore germinates?
Moss spores germinate to form an alga-like filamentous structure called the protonema.
Which structure is part of a bryophyte?
In bryophytes the long-lived and conspicuous generation is the gametophyte, while in vascular plants it is the sporophyte. Structures resembling stems, roots, and leaves are found on the gametophore of bryophytes, while these structures are found on the sporophytes in the vascular plants.
Which of the following structures are present in bryophyte plants?
In a bryophyte, all the conspicuous vegetative organs—including the photosynthetic leaf-like structures, the thallus, stem, and the rhizoid that anchors the plant to its substrate—belong to the haploid organism or gametophyte.
Why does moss produce many spores?
Mosses reproduce by spores, which are analogous to the flowering plant’s seed; however, moss spores are single celled and more primitive than the seed. … As the spores ripen they are dispersed from the capsule, and some land in areas where there is enough moisture for them to grow.
Are the spores produced by the moss sporophyte formed by meiosis or mitosis?
Life cycle of a moss (genus Polytrichum). The sporophyte generation is dependent on the photosynthetic gametophyte for nutrition. Cells within the sporangium of the sporophyte undergo meiosis to produce male and female spores, respectively.
Where does spores come from?
Spores are produced by bacteria, fungi, algae, and plants. Bacterial spores serve largely as a resting, or dormant, stage in the bacterial life cycle, helping to preserve the bacterium through periods of unfavourable conditions.
Where are spores found in ferns and mosses?
Ferns produce spores on the undersides of their fronds in cases called sporangia, and mosses produce their spores in capsules that are borne on the ends of stalks.
Do mosses have spores?
A moss is a flowerless, spore-producing plant – with the spores produced in small capsules. … The spore capsule, often with a supporting stalk (called a seta), is the sporophyte and this grows from the gametophyte stage. You will commonly see the statement that a moss gametophyte consists of leaves on stems.
What are moss plants produced from?
Mosses reproduce by branching and fragmentation, by regeneration from tiny pieces of leaves or stems, and by the production of spores. The spore, under favourable conditions, germinates and grows into a branching green thread (protonema).
Where are fern spores produced?
There are two distinct stages of the fern life cycle. Mature plants produce spores on the underside of the leaves. When these germinate they grow into small heart-shaped plants known as prothalli. Male and female cells are produced on these plants and after fertilisation occurs the adult fern begins to develop.
What are fern spores?
Fern spores are the tiny genetic bases for new plants. They are found contained in a casing, called sporangia, and grouped into bunches, called sori, on the underside of the leaves. Spores look like little dots and may be harvested for fern spore propagation by the intrepid gardener.
What type of spores are produced in fern plant?
Some lycophytes and ferns are heterosporous (two kinds of spores are produced). These plants produce microspores and megaspores, which give rise to gametophytes that are functionally male or female, respectively.