Rest of the Answers to Check Your Knowledge Lesson 38

Q: Explain the realtionship between the distribution of tissues in the leaf and functions of these tissues.

A: Transport tissues transport water between the root and the stem system and the water is moved alond with th materials from the soil and glocuse that needs to be changed into starch and stored. In the dermal tissue the plant is protected from predators and from the deserts. In the ground tissue, the plant is supported, it is also where photosynthesis takes place.

Q: Outline four structual adaptations of xerophytes

A: Waxy structure in order to hold water
Vertical roots in order to capture sunlight in the morning
Spines or needles in order to defend itself against predators
Spines instead of leaves to reduce the rate of transpiration

Q: Outline two structural adaptations of hydrophytes

A: Waxy cuticle in order to keep water inside and keep water from outside out.
Small amounts of xylem in stem and leaves

Plant Lab

This week in Mr. Ghosh's Class we will be starting an in depth study of the plant of our choice. We will be taking samples directly from the tissue of the plant and studying them under the micoscope as well as studying the development of the plant and writing an in depth report of our findings. The plant I have chosen to work with is the Gerber Daisy

Here is some information of the Gerber Daisy Taken from Wikipedia.org

“Gerbera L., is a genus of ornamental plants from the sunflower family (Asteraceae). It was named in honor of the German naturalist Traugott Gerber, a friend of Carolus Linnaeus.
It has approximately 30 species in the wild, extending to South America, Africa, Madagascar, and tropical Asia. The first scientific description of a Gerbera was made by J.D. Hooker in Curtis's Botanical Magazine in 1889 when he described Gerbera jamesonii, a South African species also known as Transvaal daisy or Barberton Daisy.
Gerbera species bear a large capitulum with striking, 2-lipped ray florets in yellow, orange, white, pink or red colors. The capitulum, which has the appearance of a single flower, is actually composed of hundreds of individual flowers. The morphology of the flowers varies depending on their position in the capitulum.
Gerbera is commercially important. It is the fifth most used cut flower in the world (after rose, carnation, chrysanthemum, and tulip). It is also used as a model organism in studying flower formation. Gerbera contains naturally occurring coumarin derivatives.”

http://en.wikipedia.org/wiki/Gerbera

Check Your Knowledge

Outline the wide diversity in the plant kingdom as exemplified by the structural differences between bryophytes, filicinophytes, coniferophytes and angiospermophytes

Answer:

• Bryophytes which include moss and liverworts do not have roots, a vascular system or an outer cuticle, they tend to have leaf like structures in moss, and liverworts have flattened shapes called a thallus

Flilcinophytes or ferns have true roots, leaves in fronds and a vascular system, can form small trees with no wood, and have a cuticle on the leaves.

Coniferophytes or conifers can be shrubs and grow to very large trees with wooded stems and roots and they also include an advanced vascular system.

Angiospermophytes which are flowering plants can vary in their structure meaning that they can be small flowers, large trees or shrubs and can grow woody tissue. Also they do include roots and stems and an advanced vascular system.