Many types of obstacles hinder biomedical scientists from solving health-related challenges. Money that is needed for researches is one of them and you must cooperate with funding agencies. For innovative work you must think outside the box. Also you need to spend too much time for "paperwork".
<span>Tow
of the cells structures the give a plant its shape are the cell wall
and the vacuole. The cell wall present in sclerenchyma cells plays a
major role in the shape of the plant at macroscopic level, this cells
contain a hardening agent that shapes and protect the outer layers of
the plant. Vacuoles on the other hand are structures within the plant
cell that provides support and structural stability to the plant.</span>
Coniferophyta
Explanation:
Plants and trees belonging to coniferphyta are gymnosperms which are vascular plants with unprotected or naked seeds. These are called conifers because they bear male and female cones produced by the sporophytes on the same tree . The female conifers have many seeds on the cone scales.
These cones have spores which undergoes meiosis and produce male and female gametes respectively. Male gametes with pollen grains produces sperm cells and female gametes produce egg cells inside the ovules.
During the spring season with winds blowing, pollen released from the male cone disperses on the female cone present on the same tree.
Upon reaching the female cone, the sperms in the male gametes will fertilize the egg cells in the female and will fertilize to form zygote. This zygote will develop into an embryo in the ovules and later develop into seeds.
When these seeds fall on the ground, they get germinated into a new conifer. Thus dispersal of the seeds is taken care of by the seeds itself without the production of any fruit.
Carl Linnaeus is known as the "Father of Modern Taxonomy"
