The genus includes both annual plants and perennial plants. ADVERTISEMENTS: In this article we will discuss about:- 1. 17 The diagram below illustrates possible evolu-tionary pathways of some species. Economic Importance 4. These are plants that require two years to complete their life cycle. The life cycle of seedless vascular plants is an alternation of generations, where the diploid sporophyte alternates with the haploid gametophyte phase. Geraniums are among the most popular of bedding and greenhouse plants. These are plants that complete their life cycle during a single season. The Four Main Flower Parts. The life cycle of a variety tells you how many seasons it will take for that crop to flower and how long the plant will live. Most species under this genus are herbaceous plants and are native to Southern Mexico. Life Cycle. Calendula officinalis (aka pot marigolds or English marigolds): A native of southern Europe, this “marigold” is actually not a true marigold, but is an attractive companion plant nonetheless. Most flowers have four main parts: sepals, petals, stamens (the male parts of a flower) and either carpels or a pistil (the female parts of the flower). Her life is poverty. Characters of Asteraceae: Mostly herbs or shrubs or rarely trees; leaves alternate rarely opposite, exstipulate rarely stipulate; inflorescence capitulum or head surrounded by involucre of bracts; ray and disc florets, flower Distribution of Asteraceae 3. These haploid microspores will eventually give rise to haploid pollen grains. 1) In the flower’s male parts, the anthers, diploid microsporangium undergo meiosis giving rise to microspores. Which statement is a valid inference based on the information in the diagram? Marigold (Calendula) is an extremely effective herb for the treatment of skin problems and can be used wherever there is inflammation of the skin, whether due to infection or physical damage; for example, crural ulceration, varicose veins, hemorrhoids, anal fissures, mastitis, sebaceous cysts, impetigo or other inflamed cutaneous lesions. Its bright flowers are edible—with a tangy, peppery taste—so it is often grown alongside herbs in kitchen gardens. Height : 4 to 85 inches (10 to 220 cm). Geranium, (genus Geranium), any of a group of about 300 species of perennial herbs or shrubs in the family Geraniaceae, native mostly to subtropical southern Africa. Plant species can be classified based on their life cycle. Biennials. Affinities 5. (2) Species D is more closely related to species E than to species F. (3) Species B is the ancestor of species F. The closely related genus Pelargonium contains some 280 Annual plants complete their entire reproductive life cycle - from germination, through seed production and then on to death - in one season. Marigold is the common English name for plants falling under the genus Tagetes. Annuals are those plants that complete their life cycle every year, with only a dormant seed remaining at the end of the growing season. The diploid sporophyte is the dominant phase of the life cycle, while the gametophyte is an inconspicuous, but still-independent, organism. Life Cycle : Half hardy annual, hardy annual. Examples like corn, rice, wheat, and pulses are annuals plant. Classification based on Life Cycle. Important Types. Characters of Asteraceae 2. Perennials, however, persist over many years, with only the top portion of the plant ever dying back and then regrowing at the start of the next season. Now take a look at the steps involved in an angiosperm’s life cycle. 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