Science Exam
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Created by:
colegraham18 on May 22, 2012
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Questions from Science study guide
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51 terms
Terms | Definitions |
|---|---|
 what is the importance of photosynthesis? | It provides food for plants and exchanges carbon-dioxide for oxygen |
| where does photosynthesis take place in a plant? | chloroplast |
| What is the equation for photosynthesis | CO2 + H2O ------->C6H12O6+O2 Carbon Dioxide + Water----------------->Sugar+ Oxygen light energy |
| central vacuole | sac-like structure that stores water, waste and food |
| cell wall | strong layer around the cell membrane in plants, algae, and some bacteria |
| Chloroplast | green jelly bean structures in which photosynthesis occurs |
| chlorophyll | a green pigment found in chloroplasts which is located in the leaves of plants. |
| nucleus | chemical instructions that direct the cells activities |
| cotyledon (seed) | stores, a seed leaf that stores food |
| embryo | An organism in the earliest stage of development from a zygote |
| seed coat | protective outer layer of seeds of flowering plants |
| Phloem | the vascular tissue through which food moves in some plants |
| xylem | the vascular tissue through which water and nutrients move in some plants |
| pollen | tiny structures that contain the cells that will later become sperm cells |
| seed | the plant structure that contains a young plant inside a protective covering |
| germination | occurs when the embryo begins to grow again and pushes out of the seed |
| root cap | protects the root from injury from rocks as the root grows through the soil |
| cambium | vascular tissue that produces xylem and phloem cells as a plant grows |
| stem | a structure that holds a plant up and supports its leaves |
| stomata | Small openings on a leaf through which oxygen and carbon dioxide can move. |
| cuticle | the waxy, waterproof layer that covers the leaves and stems of most plants |
| tissue | group of similar cells that perform a particular function |
| vascular | plant that has tubes and transports material |
| non-vascular | containing no plant tissue through which water and food move |
| transpiration | evaporation of water from a plant's leaves |
| seed dispersal | animals, water and wind |
| leaves | takes in air and light - makes food for plant |
| roots | Absorbs water and minerals from the ground. Anchors plant in ground. |
| outer bark | old phloem that protects the tree |
| inner bark | active phloem that moves food around tree |
| cambium | (see number 18) |
| sapwood | area in plants that surrounds heartwood and is active in fluid transport |
| heartwood | Helps support the tree, older xylem near the center of a woody stem that no longer conducts water |
| annual rings | inner bands of light wood and outer rings of dark wood on a tree; tell the age of trees and how much water it has received |
| function of stomata | Exchange gases (absorb co2, release 02) and lose water through transpiration |
| characteristics of angiosperms | Produce flowers, and produce seeds that are enclosed by a fruit |
| examples of angiosperms | Oak, Maple, Grass, Daisey, Apple |
| pistil | the female ovule-bearing part of a flower composed of ovary and style and stigma |
| sepals | Leaflike parts that cover and protect the flower bud |
| petals | brightly colored structure just inside the sepals; attracts insects and other pollinators to a flower |
| stamens | The pollen-producing male reproductive organ of a flower, consisting of an anther and filament. |
| life cycle of angiosperm | First, tree produces flowers; Second, cells in anther produce pollen grains and inside ovary an egg cell is produced in each ovule; Third, pollen grains are trapped on stigma; Fourth, pollen grain produces a pollen tube that grows into ovule and a sperm cell moved through pollen tube and fertilizes egg cell; Fifth, ovule develops into a seed and fertilized egg becomes the seed's embryo and other parts of ovule develop into seed coat and the seed's stored food; Sixth, ovary and other structures develop into a fruit that encloses the seeds and fruit helps in seed dispersal; Seventh, a seed grows into a new plant |
| benefits of mulch | (see page in binder) |
| annual plant | A flowering plant that has a life cycle lasting only a single year or growing season followed by death. |
| perennial | Flowering plant that lives for more than 2 years |
| chlorophyl | pigment - gives plants a green color |
| red panda scientific name | Ailurus fulgens |
| Tennessee state tree scientific name | (Tulip Tree) Liriodendron tulipifera |
| what does Bernoulli's principal state | Bernoulli's Principle says that increased air velocity produces decreased pressure. |
| how does Bernoulli's principal relate to birds flight | the curve shape on the top of a wing makes for higher velocity which creates low pressure (see Bernoulli's Principal) |
| characteristics of teeth of mammals | incisors-cutting(vegetables), Canines-Stabbing(meats), Molars- Grinding (hard foods) |
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