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Epilobium hirsutum — Seed head. In the broadest sense, dispersal occurs when the fitness benefits of moving outweigh the costs. There are a number of benefits to dispersal such as locating new resources, escaping unfavorable conditions, avoiding competing with siblings, and avoiding breeding with closely related individuals which could lead to inbreeding depression.
Epilobium hirsutum seed head dispersing seeds. In spermatophyte plants, seed dispersal is the movement, spread or transport of seeds away from the parent plant. [1] Plants have limited mobility and rely upon a variety of dispersal vectors to transport their seeds, including both abiotic vectors, such as the wind, and living vectors such as birds.
Many Taraxacum species produce seeds asexually by apomixis, where the seeds are produced without pollination, resulting in offspring that are genetically identical to the parent plant. [ 10 ] In general, the leaves are 5–25 centimetres (2.0–9.8 in) long or longer, simple, lobed-to-pinnatisect, and form a basal rosette above the central taproot.
Dandelion seeds are adapted to wind dispersal. A dispersal vector is an agent of biological dispersal that moves a dispersal unit, or organism, away from its birth population to another location or population in which the individual will reproduce. [1] [2] These dispersal units can range from pollen to seeds to fungi to entire organisms.
Instructional design (ID), also known as instructional systems design and originally known as instructional systems development (ISD), is the practice of systematically designing, developing and delivering instructional materials and experiences, both digital and physical, in a consistent and reliable fashion toward an efficient, effective, appealing, engaging and inspiring acquisition of ...
Design projects require students to establish goals and constraints, generate ideas, and create prototypes through storyboarding or other representational practices. [1] Robotics competitions in schools are popular design-based learning activities, wherein student teams design, build and then pilot their robots in competitive challenges.
The authors wanted to design a model which explained each component of the teaching and learning process while at the same time examining the relationship between the media and instruction. The model consists of ten elements and was constructed for teachers who both design and deliver instruction. [ 2 ]
Toronto Metropolitan Universities Student Learning Centre Yonge street entrance populated in the winter. Two architectural firms were chosen to design the centre, these were New York architect Craig Dykers of Snøhetta architecture firm along with Zeidler Partnership Architects of Toronto, the project was given $45 million in funding from the government of Ontario [1] with an overall budget of ...