Terms : Hide Images
| 8777644932 | fertilization | the union of haploid gametes to produce a diploid zygote | 0 | |
| 8777644933 | carpel | the ovule-producing reproductive organ of a flower, consisting of the stigma, style, and ovary |  | 1 |
| 8777644934 | stamen | the pollen-producing reproductive organ of a flower, consisting of an anther and a filament |  | 2 |
| 8777644935 | petal | a modified leaf of a flowering plant. Petals are the often colorful parts of a flower that advertise it to insects and other pollinators |  | 3 |
| 8777644936 | sepal | a modified leaf in angiosperms that helps enclose and protect a flower bud before it opens |  | 4 |
| 8777644937 | receptacle | the base of a flower; the part of the stem that is the site of attachment of the floral organs |  | 5 |
| 8777644938 | ovary | In flowers, the portion of a carpel in which the egg-containing ovules develop |  | 6 |
| 8777644939 | style | the stalk of a flower's carpel, with the ovary at the base and the stigma at the top |  | 7 |
| 8777644940 | stigma (plural, stigmata) | the sticky part of a flower's carpel, which receives pollen grains | 8 | |
| 8777644941 | ovule | a structure that develops within the ovary of a seed plant and contains the female gametophyte |  | 9 |
| 8777644942 | pistil | a single carpel or a group of fused carpels |  | 10 |
| 8777644943 | anther | In an angiosperm, the terminal pollen sac of a stamen, where pollen grains containing sperm-producing male gametophytes form |  | 11 |
| 8777644944 | complete flower | a flower that has all four basic floral organs: sepals, petals, stamens, and carpels |  | 12 |
| 8777644945 | incomplete flower | a flower in which one or more of the four basic floral organs (sepals, petals, stamens, or carpels) are either absent or nonfunctional |  | 13 |
| 8777644946 | inflorescence | a group of flowers tightly clustered together |  | 14 |
| 8777644947 | ABC hypothesis | a model of flower formation identifying three classes of organ identity genes that direct formation of the four types of floral organs | 15 | |
| 8777644948 | embryo sac | the female gametophyte of angiosperms, formed from the growth and division of the megaspore into a multicellular structure that typically has eight haploid nulei |  | 16 |
| 8777644949 | megaspore | a spore from a heterosporous plant species that develops into a female gametophyte |  | 17 |
| 8777644950 | microspore | a spore from a heterosporous plant species that develops into a male gametophyte |  | 18 |
| 8777644951 | pollen grain | in seed plants, a structure consisting of the male gametophyte enclosed within a pollen wall |  | 19 |
| 8777644952 | pollen tube | a tube that forms after germination of the pollen grain and that functions in the delivery of sperm to the ovule |  | 20 |
| 8777644953 | pollination | the transfer of pollen to the part of a seed plant containing the ovules, a process required for fertilization |  | 21 |
| 8777644954 | endosperm | in angiosperms, a nutrient-rich tissue formed by the union of a sperm with tow polar nuclei during double fertilization. The endosperm provides nourishment to the developing embryo in angiosperm seeds |  | 22 |
| 8777644955 | double fertilization | a mechanism of fertilization in angiosperms in which two sperm cells unite with two cells in the female gametophyte (embryo sac) to form the zygote an endosperm | 23 | |
| 8777644956 | dormancy | a condition typified by extremely low metabolic rate and a suspension of growth and development |  | 24 |
| 8777644957 | seed coat | a tough outer covering of a seed, formed from the outer coat of an ovule. In a flowering plant, the seed coat encloses and protects the embryo and endosperm |  | 25 |
| 8777644958 | hypocotyl | in an angiosperm embryo, the embryonic axis below the point of attachment of the cotyledon(s) and above the radicle |  | 26 |
| 8777644959 | radicle | an embryonic root of a plant |  | 27 |
| 8777644960 | epicotyl | in an angiosperm embryo, the embryonic axis above the point of attachment of the cotyledon(s) and below the first pair of miniature leaves |  | 28 |
| 8777644961 | coleoptile | the covering of the young shoot of the embryo of a grass seed |  | 29 |
| 8777644962 | coleorhiza | the covering of the young root of the embryo of a grass seed |  | 30 |
| 8777644963 | imbibition | the physical adsorption of water onto the internal surfaces of structures | 31 | |
| 8777644964 | fruit | a mature ovary of a flower. The fruit protects dormant seeds and often aids in their dispersal |  | 32 |
| 8777644965 | simple fruit | a fruit derived from a single carpel or several fused carpels |  | 33 |
| 8777644966 | aggregate fruit | a fruit derived from a single flower that has more than one carpel |  | 34 |
| 8777644967 | multiple fruit | a fruit derived from an entire inflorescence |  | 35 |
| 8777644968 | accessory fruit | a fruit, or assemblage of fruits, in which the fleshy parts are derived largely or entirely from tissues other than the ovary |  | 36 |
| 8777644969 | asexual reproduction | the generation of offspring from a single parent that occurs without the fusion of gametes (by budding, division of a single cell, or division of the entire organism into two or more parts). In most cases, the offspring are genetically identical to the parent |  | 37 |
| 8777644970 | fragmentation | a means of asexual reproduction whereby a single parent breaks into parts that regenerate into whole new individuals | 38 | |
| 8777644971 | apomixis | the ability of some plant species to reproduce asexually through seeds without fertilization by a male gamete |  | 39 |
| 8777644972 | vegetative reproduction | cloning of plants in nature |  | 40 |
| 8777644973 | dioecious | in plant biology, having the male and female reproductive parts on different individuals of the same species |  | 41 |
| 8777644974 | self-incompatibility | the ability of a seed plant to reject its own pollen and sometimes the pollen of closely related individuals | 42 | |
| 8777644975 | totipotent | describing a cell that can give rise to all parts of the embryo and adult, as well as extraembryonic membranes in species that have them |  | 43 |
| 8777644976 | vegetative propagation | cloning of plants by humans |  | 44 |
| 8777644977 | callus | a mass of dividing, undifferentiated cells growing in culture | 45 | |
| 8777644978 | stock | the plat that provides the root system when making a graft | 46 | |
| 8777644979 | scion | the twig grafted onto the stock when making a graft |  | 47 |
| 8777644980 | transgenic | pertaining to an organism whose genome contains a gene introduced from another organism of the same or a different species | 48 | |
| 8777644981 | biofuel | a fuel produced from biomass |  | 49 |
| 8777644982 | biomass | the total mass of organic matter comprising a group of organisms in a particular habitat |  | 50 |
