When you look at a pine tree the plant you see is?
Pine trees are conifers (coniferous = cone bearing) and carry both male and female sporophylls on the same mature sporophyte. Therefore they are monoecious plants. Like all gymnosperms pines are heterosporous and generate two different types of spores (male microspores and female megaspores).
What does the term gymnosperm mean and in what sense does it apply to pine trees?
What does the term gymnosperm mean, and in what sense does it apply to pine trees? Gymnosperm means "naked seed" seeds are produced out in the open on cone scales. Apart from size differences, how can you distinguish a cone scale of a pine seed cone from that of a pine pollen cone?
What is the conspicuous part of a fern plant?
leaf The most conspicuous part of the fern sporophyte is the leaf. The typical fern leaf, often termed a frond, is an elaborate structure composed of numerous leaflets.
Which of the following characteristics would best support your assertion that a particular plant is an angiosperm?
Which of the following characteristics would best support your assertion that a particular plant is an angiosperm? It lacks gametangia. Within a gymnosperm megasporangium, which of the following develops before the others after fertilization occurs?
Are pine cones haploid or diploid?
Cones are the reproductive structures of the conifers: Cones are diploid tissue produced by the dominant sporophyte stage. The haploid gametophyte stage develops and produces gametes inside the cone.
Is a pine a gymnosperm?
Conifers. Conifers like the spruce, cedar and pine tree are gymnosperms and have seeds on cones.
Why is a pine tree called a sporophyte?
Pine trees are conifers (coniferous = cone bearing) and carry both male and female sporophylls on the same mature sporophyte. Therefore, they are monoecious plants. Like all gymnosperms, pines are heterosporous and generate two different types of spores (male microspores and female megaspores).
Are pine trees gymnosperms?
Conifers like the spruce, cedar and pine tree are gymnosperms and have seeds on cones.
What is the conspicuous generation in ferns?
The most conspicuous stage of the life cycle is the sporophyte generation whereas the gametophyte generation is small and inconspicuous.
Where do fern antheridia develop quizlet?
Where do fern antheridia develop? Haploid antheridia in ferns develop on the underside of mature haploid gametophytes.
What evidence do you think Paleobotanists look for that would indicate the movement of plants from water to land?
What evidence do paleobotanists look for that indicates the movement of plants from water to land? It undergoes alternation of generations. Which of these is a major trend in land plant evolution? To colonize, land plants had to overcome a number of difficulties.
Which of the following is true for pine pollen grains?
Answer and Explanation: B) Conifer pollen grains contain male gametophytes is true in the pine life cycle.
Are trees haploid or diploid?
diploid The tree is diploid and represents the dominant sporophyte generation. In sexual reproduction, it bears flowers in which haploid spores are produced. The spores develop into tiny gametophytes that contain only a few cells.
What part of the Pine Cone is diploid?
All the conspicuous parts of the plant belong to the sporophyte generation: The plant and the cones are diploid. The gametophyte is confined to specialized parts of the cone. The female gametophyte remains inside the female cone. The male gametophyte is released, as pollen, from the male cones.
Is maple a gymnosperm?
Broadleaf species such as oak, hickory, ash, maple, walnut, etc. are angiosperms. Needle-leaf species such as pine, spruce, fir, hemlock, baldcypress, larch, etc. are gymnosperms.
Is a maple tree an angiosperm or gymnosperm?
Angiosperms are trees have broad leaves that usually change color and die every autumn. Oaks, maples and dogwoods are examples of deciduous trees. Some angiosperms that hold their leaves include rhododendron, live oak, and sweetbay magnolia.
Is a pine tree a sporophyte or gametophyte?
Pine tree is a gymnosperm. Sporophyte is the dominant phase in the life cycle of gymnosperms.
What is a pine sporophyte quizlet?
Pine sporophyte and gametophyte. sporophyte = tree. male gametophyte = windblown pollen grains shed by pollen cones. female gametophytes retained within ovules on seed cones -> develop into windblown seeds. Pine life cycle.
Is a maple tree a gymnosperm?
Broadleaf species such as oak, hickory, ash, maple, walnut, etc. are angiosperms. Needle-leaf species such as pine, spruce, fir, hemlock, baldcypress, larch, etc. are gymnosperms.
What is the scientific name of pine?
PinusPine / Scientific name Read a brief summary of this topic. pine, (genus Pinus), genus of about 115 species of evergreen conifers of the pine family (Pinaceae), distributed throughout the world but native primarily to northern temperate regions.
What is a fern frond?
The leaves of ferns are often called fronds. Fronds are usually composed of a leafy blade and petiole (leaf stalk). Leaf shape, size, texture and degree of complexity vary considerably from species to species. A fern leaf or frond.
What does a fern in stage two a gametophyte look like?
The fern gametophyte looks like a small, heart-shaped leaf and is bisexual, containing both male and female organs that produce gametes. The gametangia that produce sperm are called antheridia, and those that produce eggs are called archegonia.
What is endosperm quizlet?
Endosperm. Is a tissue produced inside the seeds of most of the flowering plants around the time of fertilization. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein. Primary endosperm nucleus. Results from the fusion of the male.
How did the setup of the control and experimental microcosms differ?
How did the setup of the control and experimental microcosms differ? Control microcosms did not contain living moss, while experimental microcosms did contain living moss.
What evidence in the fossil record would you look for that would indicate that plants had successfully colonized land?
The earliest fossil evidence for land plants consists of isolated spores, tracheid-like tubes, and sheets of cells found in Ordovician rocks.
How could you determine if a plant is Heterosporous?
How could you determine if a plant is heterosporous? Male and female reproductive structures are located on separate plants.
What is a pollen grain quizlet?
pollen grain. a reproductive structure that contains the male gametes of seed plants. pollination. the transfer of pollen from the male part to the female part of a seed plant. spore.
How do you identify the pollen grains?
Pollen grain recognition is commonly performed by visual inspection by a trained person. An alternative method for visual inspection is automated pollen analysis based on the image analysis technique. Image analysis transfers visual information to mathematical descriptions.
Is a pine tree haploid or diploid?
diploid sporophyte Consider a mature pine tree – it is the diploid sporophyte generation. It produces two types of cones, male and female.
Is pine a gymnosperm?
Conifers. Conifers like the spruce, cedar and pine tree are gymnosperms and have seeds on cones.