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Chapter 27 Unit Bio
| Term | Definition |
|---|---|
| TRUE | Secondary tissues result from cell division in CORK CAMBIUM |
| TRUE | SHORT DAY plants flower when nights are long |
| TRUE | The shoot of a CORN seedling grows straight up where as a bean seedling produces a shoot with a hook to push through the soil |
| TRUE | Herbaceous PERENNIALS such as chrysanthemums store nutrients for the next seasons growth in fleshy roots or underground stems |
| TRUE | Plant development is considered REVERSIBLE because cells of certain tissues can form unspecialized cells that can then differentiate and develop into a mature plant |
| A plants roots | obtain oxygen from air spaces between soil particles |
| Which of the following is a list of three major minerals nutrients required by plants | Nitrogen, phosphorus, and potassium |
| A plant that completes its life cycle in a single growing season is called an | annual |
| Which of the following may be needed in order for a seed to germinate | all of the above |
| Like other grasses a wheat plant is characterized by having | all of the above |
| When commercial growers artificially control the lengths of days and nights they are relying on a response called a | photoperiodism |
| When vines grow their tendrils coil around objects for support. This action is called a | thigmotropism |
| Cells on the dark side of a stem elongate more than the cells on the light side because the hormone | auxin accumulates on the dark side and causes the cell walls to become more flexible |
| Which part of the plant exhibits a positive phototropism | B |
| Which part of the plant exhibits a positive gravitropism | A |
| The flowers of bread wheat like all grass flowers lack | petals and sepals |
| Apical meritstems located at the tips of stems and roots produce | primary growth |
| Secondary growth is produced by cell division in the cork cambium and the | vascular cambium |
| To complete its life cycle a biennial plant takes | two growing season |
| Apical meristems located at the tips of stems and roots produce | primary growth |
| The structure labeled A is the | endosperm |
| The structure labeled B is the | embryo |
| The structure labeled C is the | Cotyledon |
| Many of a plant's responses to environmental stimuli are caused by | hormones |
| A trophism is a growth response | toward or away from a stimulus |
| In a kernel of bread wheat the ovary wall and seed coat are part of the | bran |
| Which of the following is not a reason that plants need potassium | photosynthesis |
| The major difference between plants and animal development is that | plants continue to develop throughout their lives |
| All of the following are major mineral nutrients needed by plants except | zinc |
| The dutch biologist Frits Went showed that the bending of plants toward light is caused by a chemical called | auxin |
| TRUE | The process of GERMINATION occurs when a plant embryo resumes its growth |
| TRUE | Some seeds CAN NOT SPROUT until their seed coats are damaged |
| TRUE | In a tissued culture cells divide and then undergo DIFFERENTIATION |
| TRUE | Trees, shrubs, and woody vines, that drop all of their leaves at the end of the growing season each year are classified as PERENNIALS |
| TRUE | SECONDARY GROWTH results in an increase in a plants width |
| TRUE | If there is not enough air in the spaces between soil particles there may not be enough OXYGEN available for a plants roots and the plant could die |
| TRUE | The nutrient NITROGEN is a part of all proteins, nucleic acids, chlorophylls, and coenzymes in plants |
| TRUE | The inhibition of bud growth along the stem by auxin is called APICAL DOMINANCE |
| TRUE | A GRAVITROPHISM a is a response to gravity |
| TRUE | In many MONOCOTS the shoot of a seedling is covered by a protective sheet |