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109 Cards in this Set
- Front
- Back
These plants have tissue organized in such a way as to conduct food and water throughout their structure.
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Vascular / Tracheophytes
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These plants lack special tissue for conducting water or food. They produce no seeds or flowers and are generally only a few centimeters in height.
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Non Vascluar / byrophytes
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Plants that produce flowers as reproductive organs
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Angiosperms
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Plants that produce seeds without flowers
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Gymnosperms
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Plants that survive only through a single growing season
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annuals
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Plants that have a life span of 2 growing season:
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biennial
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Plants that continue to grow year after year:
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perennial
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The ______ system of angiosperms includes the stem, leaves, flowers, and fruit.
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shoot
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The signature structure of an angiosperm is the _______.
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flower
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Before a flower blooms, it is enclosed within the _______.
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sepals
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Small, green, leaf-like structures which pull back to reveal flower petals:
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sepals
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The main function of this plant part is to attract insects and birds, which may be neccessary to the process of pollination.
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flowers
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The short branch of the stem, which supports the flower, is known as the:
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pedicel
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The _______ is the female structure of a flower that includes the stigma, style, ovary, and ovules.
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pistil
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The sticky surface at the top of a pistil which traps pollen grains:
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stigma
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The _____ is a slender, vase-like structure that encloses the ovary of a plant.
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style
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The hollow, bulb-shaped structure in the lower interior of the pistil, which will ripen and become fruit:
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ovary
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The small round cases located in the ovary that contain one or more egg cells are known as ______ .
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ovules
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If the egg is fertilized, the _____ will become a seed.
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ovule
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The male structure of a flower is the ________.
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stamen
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The _____ sits atop the long, hollow filament.
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anther
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This has four lobes and contains cells that become pollen.
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anther
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______ ______ from a compatible species are conveyed by wind, birds, or insects, and stick to the stigma.
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Pollen grains
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The ______ produces chemicals which stimulate the pollen to burrow into the style, forming a hollow pollen tube.
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stigma
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A pollen tube is produced by the tube _____, which as developed from a portion of the pollen grain.
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nucleus
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When the _____ ______ reach the ovule, one will join with an egg cell, fertilizing it to become a _______.
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sperm nuclei; zygote
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The ______ will feed the growing embryo.
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endosperm
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The shoot apex is composed of _______ tissue.
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meristem
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This type of tissue consists of undifferentiated cells capable of quick growth and specialization.
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meristem
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The terminal bud is:
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the beginning of a new set of leaves.
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The spot where the previous year's terminal bud was is then called a _______ ____ ____.
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terminal bud scar.
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______ is a matured ovary, which contains the seeds (mature fertilized ovules).
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Fruit
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Fruit provides the means to both _______ and ______ seeds.
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protect and disperse
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Simple Fruits:
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are developed from a single ripened ovary
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Apple, corn, olive, acorn and cucumber are _____ fruits.
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simple
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Fruits that are developed from many seperate ovaries are known as:
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compound fruits
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A _______ fruit is a fruit in which many ovaries of a single flower fuse together.
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aggregate
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A _____ fruit is a fruit which forms from the fusing of several ovaries or seperate flowers during ripening.
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multiple
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When a seed is exposed to proper ______ , ______ , and _______ it germinates.
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moisture, temperature, and oxygen.
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Stored food in a seed is found in the ___________.
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cotyledon
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Plants with two cotyledons in each seed are known as:
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dicotyledons (dicots)
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Plants with one cotyledon in a seed are known as:
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monocotyledons (monocots)
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Oaks, flowers, and vegetables are: dicots/monocots?
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dicots
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Grasses, lillies, palm trees are: dicots/monocots?
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monocots
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leaves that have branched or networked veins are: dicots/monocots?
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dicots
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The two varieties of vascular tissue are:
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xylem and phloem
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_____ tissue is composed of long tubular cells which transport water up from the ground to the branches and the leaves of a plant.
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Xylem
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____ tissue is made of stacked cells connected by sieve plates; and transports food made in the leaves (by photosynthesis) to the rest of the plant.
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Phloem
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The _____ is the primary site of photosynthesis in most plants.
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leaf
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The small stem like extension from a leaf to a branch, which houses vascular tissue:
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petiole
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This covers most of the leaf's surfaces and maintains the leaf's moisture balance:
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cuticle
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The ______ is one cell thick and secretes the waxy cuticle and protects the inner tissue of a leaf.
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epidermis
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The _____ layer contains vertically alligned cells with numerous chloroplasts, which maximizes the potential for exposure of the chloroplasts to needed sunlight.
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palisade
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Most photosynthesis occurs in the ______ layer of the mesophyll.
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palisade
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The ______ ________ transport the sugars produced by photosynthesis to the rest of the plant.
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vascular bundles (of xylem and phloem)
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The _______ _______ make up the veins in a leaf
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vascular bundles
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This layer of a leaf is a lyer of parenchyma cells seperated by large air spaces, which allow for the exchange of gases (carbon dioxide and oxygen) for photosynthesis.
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spongy layer
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On the underside of leaves, there are openings ringed by ______ _____.
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guard cells
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The openings on the underside of leaves are called:
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stomata (or stomates).
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What is the function of the stomata?
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to allow moisture and gases (carbon dioxide and oxygen) to pass in and out of the leaf, thus facilitating photosynthesis.
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_______ roots extend downward; while _______ roots develop secondarily and extend horizontally, parallel with the ground surface.
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primary; lateral
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Why are roots structured to provide a large surface area?
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absorbtion
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The network of the root system provides what for the plant?
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anchoring
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What are the four major structural regions of roots?
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root cap; meristematic region, elongation region, maturation region
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What is the function of the root cap?
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The root cap protects the tip of the root as it pushes through soil.
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The ________ region of the root is just above the root cap, and constists of differentiated cells which carry on mitosis, producing cells that grow to form the ____________ region.
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meristematic; elongation
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In the ________ region of the root structural region, cells differentiate, large vacuoles are formed, and cells grow.
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elongation
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As cells differentiate into various root tissues, they become part of the ________ region of the root structural system.
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maturation
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The ______ _______ are extensions of the cells in the maturation region, which reach between soil particles and retrieve water and minerals.
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root hairs
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The _______ is one cell layer thick and serves to protect the internal root tissue and absorb nutrients and water.
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epidermis
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The ______, located inside the epidermis, is a ring made of large parenchyma cells.
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cortex
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Inside the cortex is a ring of ________, a single layer of cells, which are tightly connected so no substances can pass between cells, allowing the __________ to act as a filter; all substances entering the vascular tissues from the root must pass through these cells.
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endodermis
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In the center of the root is the _______ __________, including xylem and phloem tissue.
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vascular cylinder
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Most water is absorbed through a plant's _____ system.
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root
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Hydrogen bonding between water molecules is known as:
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cohesion.
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The process by which hydrogen bonding between water molecules causes tension that pulls water through the water column up through the stem and on to the leaves is known as the:
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cohesion-tension process
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The process by which the water that has traveled up through the plant to the leaves evaporates is known as:
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transpiration
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In plant reproduction, the diploid generation is known as a ________.
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sporophyte
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The reproductive organs of the sporophyte produce _______ through the process of meiosis.
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gametophytes
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True/False: Gametophytes may be male or female and are always haploid.
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true
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True/False: The male gameotophyte of a plant produces sperm and the female produces an egg cell.
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true
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When a sperm cell fertilizes an egg cell, they produce a ______.
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zygote
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True/False: Asexual reproduction occurs through mitosis only and produces offspring genetically identical to the parent.
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true
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True/False: Many plants reproduce from a combination of sexual and asexual reproduction.
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true
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True/False: Plants do not have hormones.
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false
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What process do the giberellins hormones (65) regulate or influence?
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cell division and cell elongation
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What process does the cytokinins hormone regulate or influence?
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cell division and fruit development
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What process does the abscisic acid hormone regulate or influence?
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opening and closing of the stomata (controlling water lost through transpiration and formation of winter buds that put plant in a dormant state)
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What process does the ethylene hormone influence or regulate?
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ripening of fruit (spoiling releases ethylene which stimulates ripening of surrounding fruit); metabolic activity (ie producing female flowers to increase fertilization)
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What process does the auxins hormone regulate or influence?
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growth factors (ie tropism)
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What is a tropism?
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an involuntary response of an organism to an external stimulus such as light, water, gravity, or nutrients. For example, plant stems are usually positively phototropic (meaning they grow towards light) and plant roots are negatively phototropic (meaning they grow against light).
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Are roots positively or negatively phototropic?
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Negatively
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Plant roots are negatively _______; meaning they grow toward the center of Earth.
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geotropic
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Tropisms are thought to be caused by plant ______, which react to the external stimulus causing some cells to grow quickly and other cells to grow slowly.
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hormones
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Variations of ______ levels also influence the strength of petioles and stems, regulating when leaves or fruit drop.
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auxin
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What is the characteristic that describes plants' response to relative periods of light and darkness?
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photoperiodicity
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What trait causes flowering and growth of varying plants at different times of year, due to a trigger response through light sensitive chemicals?
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photoperiodicity
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The transfer of pollen from the anther to the female stigma is termed:
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pollination.
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__________ is the transfer of pollen by an insect.
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Entomophyly
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__________ is the transfer of pollen by wind.
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Anemophyly
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The ___________ consists of the stigma, style, and ovary containing one or more ovules
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gynoecium
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True / False:
Some flowers develop in such a way as to pollinate themselves. |
true
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True/ False: Flower color is thought to indicate the nature of pollinator.
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true
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Red petals are thought to attract ______, yellow petals are thought to attract bees, and ______ petals are thought to attract moths.
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red, yellow, white
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Most of a plant's metabolism takes place in these cells.
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Parenchyma
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These vessels allow water to flow to different parts of a plant.
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Xylem
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In plants that undergo secondary growth, the periderm consists of which type of cells.
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Cork
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These cells have a hardening agent that makes them rigid. They have a support function in plants.
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Sclerenchyma
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Another name for bark is ...
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Periderm
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