family caesalpiniaceae | floral and vegetative characters | economic importance | class 11 скачать в хорошем качестве

family caesalpiniaceae | floral and vegetative characters | economic importance | class 11

Aslam o alikum I am Hassam ur Rahman and I am teaching Fsc biology since 2014 .I am always trying to improve myself and provide best lecture to students.i am taking content for the lecture from authentic and relevant sources but human errors are possible . you are requested to please highlight the mistakes.My lectures are equally reliable for Fsc and mdcat students #visiblescience #mdcatbiology #alevelbiology #neetbiology #fscbiology This lecture is about CAESALPINIACEAE: Cassia Family This family includes about 152 genera and about 2300 species. In Pakistan the family is represented by 16 genera and about 60 species. Familiar Plants: Tamarinaus indica, Cassia istula, Bauhinia veriegata. Vegetative Characters Habit: Mostly trees or shrubs, some are woody climbers; rarely herbs. Stem: Erect, woody, herbaceous, or climbing. Leaves: Compound, pinnate, very rarely simple, stipulate Floral Characters : Inlorescence: Axillary or terminal raceme or panicle or spikes, rarely cymose; showy. Flowers: Bisexual, zygomorphic, rarely actinomorphic, perigynous. Calyx: Sepals 5, free or connate at base, often colored. Corolla: Mostly 5 petals, free. Androecium: Stamens 10 or fewer, rarely numerous, free or variously united. Gynoedum: A simple pistil 1-carpel; ovary superior, unilocular; placentation marginal; stigma simple. Fruit: Legume Economic Importance : The family is of great importance. Some plants are ornamental, some have medicinal importance, a few have food and other values. The leaves of Cassia alata are used to cure ring worm and skin diseases. Cassia senna and C. obovata are cultivated for the leaves which yield the drug Senna, which is the base for a laxative. Oil extracted from the seeds of Cynometera caulilora is applied externally for skin diseases. Common ornamental plants are Bauhinia variegata (Kachnar), Cassia istula (Amaltas), Parkinsonia, etc. The leaves and lower’s bud of Bauhinia variegata are used as vegetable. The acidic fruit of Tamarindus indica are edible and are rich in tartaric acid. The bark of Bauhinia and Tamarindus indica is used in tanning. The heartwood of Haematoxylon (Longwood) yield the dye Haematoxylin.