What are the characteristics of the Asteraceae family?
What are the characteristics of the Asteraceae family?
Members of the family have flower heads composed of many small flowers, called florets, that are surrounded by bracts (leaflike structures). Bell-shaped disk florets form the centre of each head. Strap-shaped ray florets extend out like petals from the centre and are sometimes reflexed (bent back).
What is the order of a sunflower?
AsteralesSunflowers / OrderAsterales is an order of dicotyledonous flowering plants that includes the large family Asteraceae known for composite flowers made of florets, and ten families related to the Asteraceae. Wikipedia
What class is Asterales?
belongs to the family Asteraceae (daisy or sunflower family) of the class Magnoliopsida, order Asterales and tribe Arctotideae. Asteraceae is the largest and most widespread flowering plant family with 1620 genera and 23600 species (Encyclopaedia Britannica; Stevens, 2001).
What is a defining feature of the aster family Asteraceae )?
The distinguishing characteristic of Asteraceae is their inflorescence, a type of specialised, composite flower head or pseudanthium, technically called a calathium or capitulum, that may look superficially like a single flower.
Which of the following characters are found in Asteraceae?
Family Asteraceae (Compositae) contain inferior ovary, i.e., stamen, calyx, corolla are localized above ovary level, syngenesious androecium(stamens), i.e., all anthers are united but filaments are free, and basal placentation, ie ovule seems to arise from the base of loculus.
What features are used to describe and identify a plant?
Identifying a landscape or garden plant requires recognizing the plant by one or more characteristics, such as size, form, leaf shape, flower color, odor, etc., and linking that recognition with a name, either a common or so-called scientific name.
What are the characteristics of a sunflower?
The common sunflower (H. annuus) is an annual herb with a rough hairy stem 1–4.5 metres (3–15 feet) high and broad, coarsely toothed, rough leaves 7.5–30 cm (3–12 inches) long arranged in spirals. The attractive heads of flowers are 7.5–15 cm wide in wild specimens and often 30 cm or more in cultivated types.
What are the 7 classifications of a sunflower?
Data Quality Indicators:
|Family||Asteraceae – sunflowers, tournesols|
|Genus||Helianthus L. – sunflower|
What is the meaning of asterales?
: an order of flowering plants coextensive with the superfamily Compositae and now usually included in Campanulales.
What is the order of Asteraceae?
AsteralesDaisy family / Order
How do you identify asters?
Look closely at the big “petals” that ring the outside of the flower head, and you will see that each petal is also a flower, called a “ray flower,” with it’s petals fused together and hanging to one side. Plants of the Aster family will have either disk flowers, ray flowers, or both.
How do you identify an aster plant?
Principal characteristics to identify fragrant aster at time of bloom are fragrance of crushed leaves, reclined posture of plant, as well as numerous stems with dense flowers and leaves. Fragrant aster showing early spring growth.
What are the two types of flowers found in Asteraceae?
There are about 600 genera in the family of Asteraceae (formerly Compositae), including various types of asters (daisies), arnica, chamomile, goldeneye, marigold, snakeroot, tansy, thistle, and wormwood.
In which of the following family the characteristic feature Tetramerous flowers are present?
(a) Trimerous flower. (b) Tetramerous flower.
What are three leaf characteristics that can be used for plant identification?
What are three leaf characteristics that can be used for plant identification?…
- having pine or needles rather than leaves.
- thick cuticles or waxy epidermis.
- sunken areas around the stomata.
Which of the following is not a characteristic of plants?
The answer is (c) Cell walls of chitin.
What are 5 facts about sunflowers?
10 Fun Sunflower Facts
- THEY’RE NATIVE TO THE AMERICAS.
- THEY WERE BROUGHT TO RUSSIA BY ROYALTY.
- THEIR POPULARITY STANDS THE TEST OF TIME.
- THEY TRACK THE SUN.
- THE WORLD’S TALLEST SUNFLOWER REACHES 30 FEET AND 1 INCH.
- THEY HAVE A HISTORY OF HEALING.
- THEY HAVE TRAVELED TO SPACE.
- THEY ARE ACTUALLY THOUSANDS OF TINY FLOWERS.
What is the characteristics of life of sunflower and its parts?
Cellular Organization A sunflower maintains homeostasis through their cell membrane, letting only some minerals get in and out. Cellular Organization is the components of the cell and how certain parts are arranged. For example, a sunflower’s cell would add up to a tissue.
What are the characteristics of sunflower?
What is the type of class is the sunflower in?
Which is the kingdom of sunflower?
PlantSunflowers / Kingdom
What is the meaning of Asterales?
Which of the following characters are found in Asteraceae family?
Characters of Asteraceae:
- A. Vegetative characters:
- Root: Tap root, sometimes modified into tubers (Dahlia).
- On the basis of form of flowers the heads are of three types: Heterogamous or radiate heads.
- Disc florets:
How many petals does an aster have?
Unlike most other asters in the family Asteraceae, these asters have just 5 to 10 petals. This gives the flowers a distinct star shape and clusters of them look very attractive when they bloom in the fall. The ‘Nanus’ asters are identified by their elongated lilac petals and bright yellow centers.
Are aster leaves fuzzy?
They also have more ray flowers. New England aster grows tall, up to five feet. Its fuzzy leaves clasp around the hairy stem toward the base.
What are the characteristics of Asterales?
Asterales is a dicotyledonous order of flowering plants that holds ten percent of the angiosperm species diversity . The southern hemisphere is represented by all families of Asterales. They are primarily herbaceous, possess simple leaves, and have many florets forming a composite flower. Use Up/Down Arrow keys to increase or decrease volume.
How many species are there in the order Asterales?
The order Asterales currently includes 11 families, the largest of which are the Asteraceae, with about 25,000 species, and the Campanulaceae (“bellflowers”), with about 2,000 species.
What are the different families of Asterales?
Asterales. The major families are Asteraceae and Campanulaceae (including Lobeliaceae), with far fewer species in the remaining families of Goodeniaceae, Stylidiaceae, Menyanthaceae, Calyceraceae, Rousseaceae (including Carpodetaceae), Pentaphragmataceae, Alseuosmiaceae, Phellinaceae, and Argophyllaceae.
What are the characteristics of Asteraceae?
The most obvious and outstanding general feature of Asteraceae is that the flowers are grouped characteristically into compact inflorescences (heads) that superficially resemble individual flowers. Each such head is ordinarily subtended by an involucre of small modified leaves (bracts).