Stigmas are as many as the number of carpels or double the number of carpels. Solanaceae family has about 90 genera and 2000 species. View Answer. Write the scientific name for the plant which belongs to the family Liliaceae and from which colchicine is extracted. View Answer. j) Pulses are rich source of proteins. 3. Flower : Epigynous, usually pentamerous with reduction in certain whorls, hermaphrodite or unisexual complete or incomplete, tubular (actinomorphic) or ligulate (zygomorphic), bracteate or ebracteate. Your email address will not be published. Position of the ovary can be shown by drawing a horizontal line above, below or in front of the letter ‘G’, which represents the inferior, superior or half inferior position of the ovary. Name the family which was earlier known as Papilionoideae. Most members of the Campanulaceae Family have blue flowers in a bell or star shape. Economic Importance of Papilionaceae. Food: This family has many vegetables like carrot, parsely, parsnip and sowa. Floral Formula. Floral Formula, Floral Diagram& Plant Families Professor: Shaina Khan 2. Floral Formula for NEET, AIIMS, AIPMT, JIPMER| SIMPLIFIED BIOLOGY Learn about FLORAL FORMULA. Corolla : Petals 5, gamopetalous, ligulate, strap shaped. 1. It is the conventional method accustomed to formulate the structure of the flower. The formula formula makes the use of discrete letters, signs and figures to represent the specific feature of the flower. f) Soyabean contains more protein than meat. Floral Formula and Important Families of Flowering Plants, Class 11 Biology NCERT Solutions. 1. A floral formula is one of the ways to summarise all the flower characteristics, which makes the use of discrete letters, numbers and symbols. This formula indicates that the flower is bracteate, bisexual or hermaphrodite. RD Sharma Solutions |
(⚥) indicates that the flower is perfect or hermaphrodite (includes stamen plus pistil). The leaves of Phormium tenax (New Zealand Hemp) are 3 metres long and 10 cm broad. In 10 stamens, 9 filaments unites to constitute one bundle and the remaining one filament makes up the another one. Fodder: Several members of this family are important as forage plants for cattle and horses. Habit : Plants are annual herbs (e.g., Malva, Sida, Malvastrum, Urena) shrubs (e.g., Hibiscus rosa-sinensis, H. mutabilis) or rarely trees (e.g., Kydia, Bombax). Floral formula tutorial. Inflorescence: Racemose or solitory axillary. All the carpels are fused (syncarpous) to form a single ovary. They mostly grow in arid areas and are hence xerophytic (e.g., Aloe, Yucca). i) The flowers enter into the soil after fertilization in ground nut. State the different kinds of inflorescences found in the ‘potato family’. Economic importance. Click here to begin. Sometimes the epicalyx is absent (e.g., Sida and Abutilon). Corolla : Petals 5, polypetalous (slightly fused at the base), usually adnate at the base to the staminal tube. A floral formula is a symbolic representation of different floral parts, their numbers, arrangement pattern and how they are related. Androecium : Stamens 10, usually diadelphous (9+1 in Lathyrus, 5+5 in Aeschynomene) or monadelphous (9 in Dalbergia, 10 in Arachis and Erythrina indica), rarely free (e.g., Sophora), nectar gland often present on the inner bases of filaments, anther lobes bilocular, dorsifixed, introse. Firstly, the presence or absence of bract and bracteoles in the flowers of different families is observed and noted down by using particular letters. This arrangement of petals which is characteristic of the family is known as the cruciform arrangement and corolla is described as cruciform corolla, valvate aestivation. Privacy Policy |
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CaX = Calyx (sepal whorl) X = number of sepals (e.g. Gynoecium : It is 2 to many carpellary. Your email address will not be published. Calyx : Sepals 5, gamosepalous, tubular or campanulate, persistent, accrecent (enlarging in fruit, e.g., Physalis, Withania), Valvate or imbricate, green or coloured, hairy. Floral Formula. Gonglylodes). Gynoecium : Bicarpellary, syncarpous, ovary superior, carpels placed obliquely in diagonal plane, generally bilocular (2-4 locular in tomato, 4-locular in Datura due to false septa), placentation axile, ovules many in each locules, placentae swollen, a nectariferous disc or lobes may be present, stigma capitate or lobed. Therefore, the flowers showing different symmetry is indicated by specific symbols in the floral formula. Tutor log in |
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Floral Formula and Important Families of Flowering Plants, Class 11 Biology NCERT Solutions. : 307 The dot represents the main axis, green structure below is the subtending bract.Calyx (green arcs) consists of five free sepals; corolla (red arcs) consists of five fused petals.Antepetalous stamens are joined to petals by hairy filaments. School Tie-up |
Their construction requires careful observation of individual flowers and of variation among the flowers of the same or different individuals. technical descriptions of families. Therefore, the floral formula is the simple way to remember the flower morphology, symmetry and sexuality etc. Inflorescence : Recemose, sometimes solitary (e.g., Tulipa, Gloriosa) or umbellate condensed cymes (umbel cyme), e.g., Onion. g) Aloin alkalorids are obtained from Aloe plant of liliaceae. h) Smilax is a monocot, having, reticulate venation. Some herbs are annual (e.g., Asphodelus). View Answer. Many collections of seed from their natural habitat just give the Family name. All of these flowers are from species in the Proteaceae. Fodders: Medicago sativa (Alfalfa) is one of the best forage crops. Anthers are monothecous, reniform, transversely attached to the filament and extrorse. (2) Disc florets : In the centre of head, bracteate, bisexual, actinomorphic, tubular, pentamerous, epigynous. Urd this is cultivated as a pulse crop in Uttar Pradesh, Madhya Pradesh, Punjab and Bengal. Farsetia jacquemontii is an undershrub. State the different kinds of inflorescences found in the ‘potato family’. Calyx : Sepals 5, gamosepalous, usually companulate, lobe unequal, rarely tubular (e.g, Cyamopsis), odd sepal anterior, may be persistent inferior. In panicle raceme ( e.g., Bombax ) usually present in Pakistan few very Important plants is below. The petals ; thus stamens are united to form a whorl of epicalyx below the letter ‘ a ’ androecium... Of whorls and a relative relationship Between each other the common species of flower it elucidates the about., AIIMS, AIPMT, JIPMER| SIMPLIFIED Biology Learn about floral formula is a system of the. Are alternate and stipulate ( stipules 2, free lateral and often Caducous ) and 52 species of is! The vegetative phase in Radish ( Raphanus sativus ) and Turnip ( Brassica ). 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