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Structure of Plants

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Structure of Plants - Page Text Content

S: Structure of Plants

FC: Structure of Plants | By: Karina Lay Majestie Robinson Tony Aguliar

1: \Table of Contents | 1. Roots 2. Stems 3. Leaves 4. Cell Wall & Central Vacuole 5. Flowers 6. Types of Plants 7. Tropism

2: Roots | The functions of roots are that they absorb waster and mineral nutrients. In plants, roots also function in the storage of organic nutrients, such as sugar and starch. | The difference between a taproot and a fibrous root system is that one has a large central root, (taproot) and the other (Fibrous root) is only made up of many roots that are the same size. | Root hairs are slender projections of the cell membrane. Root hairs greatly increase the surface area of a root and it's ability to absorb water and mineral nutrients. | Fibrous | Taproot

3: Stems | The function of a stem is that it supports the leaves and house the vascular tissue, which transports substances between the roots and leaves. | Example: | The arrangements of the vascular bundles, between monocot and dicot are different because one (monocots) are scattered in the ground and the other (dicots) are arranged in a ring. | Potatoes

4: Leaves | Leaves are the primary photosynthetic organs of plants. | Examples: | Different types of cells within a leaf: - Xylem - Phloem - Vein - Guard cell - Stoma Both xylem and phloem are found in the veins of a leaf. Veins are extensions of vascular bundles that run from the tip of the roots to the edge of a leaf. | A cuticle coats the upper and lower epidermis. It's a waxy or fatty and water light layer on the external wall of epidermal cells. | Stromas are tiny holes in the epidermis, to connect the air spaces to the outside air. | Spines of a cactus

5: Central Vacuole | the cell wall is made of specialized sugars called cellulose It provides protection so that the plant can survive. | cell wall | the central vacuole is a cavity or sac that surrounds mass of fluid it stores water which may contain some minerals

6: Flowers | -Seed plants produce flowers. -Sepal is the outermost whorl consists of one or more Sepals. Which protect a flower from damage while it's a bud. -The second whorl consists of one or more petals, which attract pollinates. --The third whorl consists of one or more Stamens. Which produce pollen. Each stamen is made of a threadlike filament that is topped by a pollen producing sac called anther. -The stamen is a male reproductive organ. -a pistil is a female reproductive organ.

7: -Ovules develop in a pistils swollen lower portion, which is called the ovary. Usually a stalk,called the style, rises from the ovary. Pollen lands on and sticks to the stigma,the swollen, stalky tip of the style.

8: Types of Plants | 1-Non vascular- are plants without a well-developed system of vascular tissues. 2-Seedless Vascular-Ferns are the most common and familiar seedless vascular plants. 3-Gymnosperms are a woody vascular seed plant whose seeds are not enclosed by an ovary or fruit. 4-Anglosperms is a seed plant that produces within a fruit.

9: !-non vascular plants are relatively small and green. And do not produce seeds. -Seedless vascular plants have roots, stems, & leaves coated with a waxy covering. Reproduce with spores that are resistant of drying. -Gymnosperms plants produce seeds in cones, such as pines & spruces. Reproduce using seeds, but do not reproduce flowers. -Anglosperms plants such as roses, grasses, and oaks. Produce seeds, also produce flowers.

10: Tropism is a response in which a plant grows either toward or away from a stimulus. | TROPISMS

11: Phototropism -is responses to light .

12: Gravitropism is responses to gravity.

13: Thigmotropism is responses to touch.

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  • By: Karina L.
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