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Growth in plants
By Charlotte Cooper…read more

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· A meristem is the tissue in all plants
consisting of undifferentiated cells
(meristematic cells) and found in zones of
the plant where growth can take place.…read more

Slide 3

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Plant Cutting
· Plant cutting, also known as striking or
cloning, is a technique for vegetatively
(asexually) propagating plants in which a
piece of the source plant containing at
least one stem cell is placed in a suitable
medium such as moist soil, potting mix,
coir or rock wool. The cutting produces
new roots, stems, or both, and thus
becomes a new plant independent of the
parent.…read more

Slide 4

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· Phototropism is directional growth in which the direction of
growth is determined by the direction of the light source. In
other words, it is the growth and response to a light stimulus.
Phototropism is most often observed in plants, but can also
occur in other organisms such as fungi. The cells on the plant
that are farthest from the light have a chemical called auxin that
reacts when phototropism occurs. This causes the plant to have
elongated cells on the farthest side from the light. Phototropism
is one of the many plant tropisms or movements which respond
to external stimuli. Growth towards a light source is a positive
phototropism, while growth away from light is called negative
phototropism (or Skototropism). Most plant shoots exhibit
positive phototropism, while roots usually exhibit negative
phototropism, although gravitropism may play a larger role in
root behavior and growth. Some vine shoot tips exhibit negative
phototropism, which allows them to grow towards dark, solid
objects and climb them.…read more


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