A doffer is someone who removes bobbins, pirns or spindles holding spun fiber such as cotton or wool from a spinning frame and replaces them with empty ones. Historically, spinners, doffers, and sweepers each had separate tasks that were required in the manufacture of spun textiles. From the early days of the industrial revolution, this work, which requires speed and dexterity rather than strength, was often done by children. After World War I, the practice of employing children declined, ending
Redvine (Brunnichia ovata) tendrils coil upon contact. Thigmotropism is a directional growth movement of curvature which occurs in response to stimulus of contact. Thigmotropism is found in twining plants and tendrils. After initial contact with support due to nutation, the tendril or twiner shows less growth in the region of contact and more growth on the opposite side. As a result, they bend around the support.
Chloroplast is an organelle found in plants and algae cells where photosynthesis occurs. The chloroplast contains chlorophyll which is the light sensitive pigment that power â¦ s photosynthesis and other pigments. Chlorophyll gives the plant its green colour.A plastid containing chlorophyll, developed only in cells exposed to the light.n animals chloroplasts occur only in certain low forms.  Chloroplasts are what give plants their green color.  Organelle that makes sugars, using carbon dioxide, water, and the energy from sunlight. Cholorplasts can be found in plant cells and produces food.