Lab 8: Plant reproduction . Determine whether a plant organ is a leaf, stem, or
ID: 276097 • Letter: L
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Lab 8: Plant reproduction . Determine whether a plant organ is a leaf, stem, or root Why is the vegetable a leaf, stem or root? This reasoning can come from lab 1, where we learned basic histology of stems, roots, leaves. What features distinguish stems, leaves and roots? Other plant labs this quarter have information on various parts of plants, too. Recognize and understand the function of the male and female parts of a flower How are these modifications adaptive for an environment? Flower parts: Sepals, Petals, Stamen (Anthers, Filaments), Carpels (Stigma, Style, Ovary) .Pollinator traits: how do pollinators and flowers co evolve? Why would a pollinator want to visit a particular flower? Review pollinator table Fruits:be able to identify a simple (dry or fleshy), aggregate, or multiple fruit. What part of the fruits do we eat for these? . Layers of the pericarp Review prelab and discussion questionsExplanation / Answer
The plant leaves majorly consists of broad expanded blade which is known as the lamina and it is attached to the stem of the plant with help of stalk-like petiole. A structurally complete angiosperm leaf consists of petiole or leaf stalk, lamina (leaf blade) and stipules (small structure that is located at either side of the base of petiole). The stem is normally divided into nodes and internodes. The node holds one or more leaves. Stem is the erect ascending part of the plant that develops from plumule and it bears the leaves and flowers. The root is the plant part that attaches it to the ground or to a support underground. The roots help in delivering water and provide nourishment to the plant via the branches and fibers. The male parts of the flower are called as stamen which is made up of anther at the top and there is a stalk or filament that supports the anther. The male part is known as androecium which helps in carrying the pollen to the ovary. The female part is called the gynoecium that consists of stigma, style and ovary where the fertilization takes place. The modifications are adaptive for an environment because the fertilization in plants takes place largely even dependent on environment condition. It requires appropriate temperature and environment conditions. Sepal is a part of the flower which encloses the petals and is leaf like. They protect the flower in the bud and support petals when in bloom. Petal is the segment of the corolla of flower that is brightly colored and help in attracting the pollinators. Stamen is the male reproductive part of the flower and is divided into anther and stalk. Carpel is the female reproductive part that is divided into stigma, style and ovary. Co-evolution is a term that describes the mutual changes in two or more species. The flower and the pollinator place co-evolutionary pressure that leads to change in the morphology, habits and physiology of both leading to mutual benefit.
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