What is pubescent in botany?
In botany, pubescence is a morphological characteristic of an organ (or an entire plant) covered by a layer of fine hair. Often grey-white and very dense, the hair of these plants, called tomentose, looks like wool.
What is the difference between glandular and non glandular trichomes?
The key difference between glandular and non-glandular trichomes is that glandular trichomes possess a glandular head and secrete secondary metabolites. In contrast, non-glandular trichomes do not process a glandular head and protect plants against UV light. Non-glandular trichomes protect the plant from UV light.
What is the function of glandular trichomes?
Glandular trichomes, the epidermal projections over aerial plant parts primarily function in defense against stresses including protection from insects and microbes. These structures are characterized by dedicated genetic machinery for overproduction of structurally diverse secondary metabolites.
What are Appressed hairs?
The anthers of a flower are often powdery yellow or orange in appearance (from the grains of pollen) and each anther is usually oblongoid in shape. Appressed Hairs – Refers to hairs that lie flat against the stem or the surface of leaves.
What does pubescent mean in English?
1a : arriving at or having reached puberty. b : of or relating to puberty. 2 : covered with fine soft short hairs — compare villous.
What is a pubescent boy?
Puberty is when a child’s body begins to develop and change as they become an adult. Girls develop breasts and start their periods. Boys develop a deeper voice and facial hair will start to appear. The average age for girls to begin puberty is 11, while for boys the average age is 12.
What is the non-glandular stomach?
The nonglandular stomach is the entry site of the esophagus into the stomach and is covered by keratinized stratified squamous epithelium. The thickness of the keratin layer varies with age, diet, and degree of distension of the stomach.
What does non-glandular mean?
The portion of the rodent stomach that is responsible for storage and digestion of food particles but does not contain the gastric mucosa-associated glands. ( NCI Thesaurus)
What are the stages of trichomes?
There are essentially four stages of trichome development, as shown above: Clear, Cloudy, Amber and Mixed. Each of these stages have various consequences on the strain effects, and can be great indicators of when to harvest.
What are trichomes Class 11?
Trichomes are hairs which are often found as epidermal outgrowths. The hairs of aerial parts may be unicellular or multicellular, branched or unbranched. Function : (a) They enclose stationary air and protect the plant organ against water loss and sudden fluctuation in atmospheric temperature.
What plants have hair stems?
Answer: Explanation: At the right, on the upper stem of the roadside weed called Spiny-leafed Sow Thistle, Sonchus asper, you see glandular hairs — hairs with glands atop them. In many species the glands on such hairs are sticky and sometimes you can find small insects such as aphids stuck to them.
Why are leaves hairy?
Many plants have fuzzy or hairy leaves—the hairs are actually specialized epidermal cells—that protect the plant from insect attack. (The fuzzy texture may also discourage grazing.) If a plant’s epidermis is injured, water loss and invasion by insects and disease organisms can rapidly weaken the plant.
What does the word pubescent mean in biology?
pubescent – covered with fine soft hairs or down; “downy milkweed seeds”. puberulent, sericeous, downy. biological science, biology – the science that studies living organisms. haired, hairy, hirsute – having or covered with hair; “Jacob was a hairy man”; “a hairy caterpillar”.
Which is the best definition of the word glandular?
Definition of glandular. 1a : of, relating to, or involving glands, gland cells, or their products. b : having the characteristics or function of a gland. 2a : innate, inherent the almost glandular … instinct for adventure and romance — Newsweek.
What does the word puberlulent mean in Latin?
Puberlulent: Minutely pubescent (diminutive of pubescent). Scabrous: Rough to the touch due to short, stiff hairs. Sericeous: Appressed, fine and straight hairs (silky). Stellate: Star-shaped hairs (common in Malvaceae). Strigose: Sharp, straight, appressed hairs. Tomentose: Densely matted, soft white wool (tomentum).
Which is the best definition of a metaphor?
Metaphor is a figure of speech that makes an implicit, implied, or hidden comparison between two things that are unrelated, but which share some common characteristics.