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26 Cards in this Set
- Front
- Back
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a cell haveing 26 chromosomes divides to produce two daughter cells, each haveing 26 chormosomes, the choromosomes number of the daughter cell is due most directly to
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replication and migration of single-stranded chromosomes
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if an organism reproduces asexually it offspring will most likely be
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genetically identical to the p[arents
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which evebt occurs in the cytoplasmic division of plants cells but not in the cytoplasmic division of animals cells
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cell plate formation
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grafting
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a cutting from one plant called the scion is attached to the main body of a rooted plant the stock the scion keeps its own identity seedless oranges and grapes are propagted by grafting
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cutting
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pieces of roots, stems or leaves develop into new plants under proper conditions rose, sugar cane and bananas are propagated this way
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rhizomes
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long moified stem that grow horizontally under the soil new plants are produced at nodes along the stem lawn grasses ferns and irises reproduce by rhizomes
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tubers
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underground stems that contain stored food. white potatoes are tubers the eyes of the potato are buds which can develop into new plants
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bulbs
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undergound stems specialized for food storage the food is stored in the thick leaves of the bulb each bulb can develop into a new plant onions are bulbs
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runners
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stems that grow out over the surface of the soil from the exisiting stem at the point along the runners new plants grow. runners occur in strawberrery and some grasses
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ovule
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eggs in a plant
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stamen
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make part of plant
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ovary
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contains ovule eggs
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pistil
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female part of flower
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petal
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used to attract insects and other animals to the flower
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filament
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holds up anther
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anther
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produces pollen
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receptacle
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holds up and supports flower strutctures
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sepal
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protect flower when it is a bud
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style
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holds up stigma and commect it to ovary
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internal fertilizantion occurs in the reproductive cycle of which organism?
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a snake
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which type of fertilization and development is exhibited by birds and many reptiles?
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internal fertilizantion and external development
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in humans the number of sperm cells required to produce a pair of identical twins is?
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1
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what is a function of the fluid produced by the glands associated with the human male reproductive systems?
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it transports sperms
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in which stage is an egg is released from follicle?
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ovulation
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in which stage is estrogen is secreted initiating the thicking of the uterine lining
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follicle stage
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ovaries produce reproductive structures know as
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egg cells
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