shoot system of plants
The Shoot System of Plants
The Leaf
Leslie L. Ricarte
Group 2 Sec. A - 2L
December 12, 2013
___________________ _______________
¹A scientific paper submitted in partial fulfillment of the requirements in General Biology II Laboratory under Prof. Ma. Teresa Mirandilla, 2nd Sem.2013-2014.
ABSTRACT
The purpose of this study is to observe and identify the external and anatomical parts of various types of leaves. The shoot system of the leaves was seen under the microscope by identifying and using the skills in preparing for free hand cross sections of leaves. It requires using a blade or scalpel to cut off the cross section of the leaf including an enlarged part which is the midrib that is located in the lamina and has fine extensions called veins. Some leaves are flat and wide; others are spiky and thin. Three distinguishable areas such as, the upper and lower epidermis that are perforated by small openings called stomata, mesophyll and the vascular tissue was revealed.
INTRODUCTION Leaf is the primary photosynthetic organ of most plants. Leaves are usually flattened blades that consist, internally, mostly of parenchyma tissue called the mesophyll, which is made up of loosely arranged cells with spaces between them. The spaces are filled with air, from which the cells absorb carbon dioxide and into which they expel oxygen. The mesophyll is bounded by the upper and lower surface of the leaf blade, which is covered by epidermal tissue. A vascular network runs through the mesophyll, providing the cell walls with water and removing the food products of photosynthesis to other parts of the plants.
The leaf blade is connected to the stem through a narrowed portion called the petiole, or stalk, which consists mostly of vascular tissue. Appendages called stipules are often present at the base of the petiole.
A leaf is an extension of a plant 's stem. Although most leaves are flat, broad, or bladelike, they also may be many
The Leaf
Leslie L. Ricarte
Group 2 Sec. A - 2L
December 12, 2013
___________________ _______________
¹A scientific paper submitted in partial fulfillment of the requirements in General Biology II Laboratory under Prof. Ma. Teresa Mirandilla, 2nd Sem.2013-2014.
ABSTRACT
The purpose of this study is to observe and identify the external and anatomical parts of various types of leaves. The shoot system of the leaves was seen under the microscope by identifying and using the skills in preparing for free hand cross sections of leaves. It requires using a blade or scalpel to cut off the cross section of the leaf including an enlarged part which is the midrib that is located in the lamina and has fine extensions called veins. Some leaves are flat and wide; others are spiky and thin. Three distinguishable areas such as, the upper and lower epidermis that are perforated by small openings called stomata, mesophyll and the vascular tissue was revealed.
INTRODUCTION Leaf is the primary photosynthetic organ of most plants. Leaves are usually flattened blades that consist, internally, mostly of parenchyma tissue called the mesophyll, which is made up of loosely arranged cells with spaces between them. The spaces are filled with air, from which the cells absorb carbon dioxide and into which they expel oxygen. The mesophyll is bounded by the upper and lower surface of the leaf blade, which is covered by epidermal tissue. A vascular network runs through the mesophyll, providing the cell walls with water and removing the food products of photosynthesis to other parts of the plants.
The leaf blade is connected to the stem through a narrowed portion called the petiole, or stalk, which consists mostly of vascular tissue. Appendages called stipules are often present at the base of the petiole.
A leaf is an extension of a plant 's stem. Although most leaves are flat, broad, or bladelike, they also may be many
Cited: http://www.dummies.com/how-to/content/plant-biology-roots-shoots-stems-and-leaves.html http://www.cliffsnotes.com/sciences/biology/plant-biology/the-shoot-system-stems/characteristics-of-shoot-systems http://facweb.furman.edu/~lthompson/bgy34/plantanatomy/plant_shoot.htm Reece Campbell Biology 9th txtbk Activity 3 Handout: Shoot system of plants – The Leaf