أكاديميا - كولنز معاجم الجيب العلمية - البيولوجيا انكليزي - فرنسي - عربي الحرف ٢_ f

Academia - Collins Scientific Pocket Dictionaries - Biology
English - French - Arabic letter 2_ F


fertilizer
engrais m

Fertilizer is a substance added to the soil to increase plant growth in quantity and quality. When crops are harvested, the natural cycle of mineral salts in the soil is disturbed, meaning that mineral salts absorbed by plants are not returned to the soil. This is called soil depletion, which may make the soil poor (infertile). Fertilizers replace the soil. They are of two types:
(a) Organic fertilizers, such as sewage. (b) Inorganic fertilizers such as ammonium sulphate.


fibrinogen
fibrinogen m

Fibrinogen fibrogen. Plasma protein is a soluble protein related to blood clotting. clotting


fibula
fiber f. person m

Splinter. The posterior bone is one of two bones found in the lower part of the hind limb of tetrapods. In humans, it is the outer bone of the leg below the knee. See endoskeletan.


flagellum
flagellum m

Whip. A moving microscopic thread that emanates from the surfaces of certain cells and causes movement by violently rushing forward and backward. The flagella are relatively larger than cilia and less abundant, and they are responsible for mobility in many uncellular organisms and reproductive cells.

Mobile bacteria
Moving semen - whips
My eyes

flower. flower
fleur f

flower . Organ sexual reproduction. Reproduction in angiosperms. Flowers pollinated by insects have brightly colored, fragrant petals that often contain a cloaca gland. Stamens and carpels with sticky stigmas are found within the flower, and these adaptations encourage pollination by...
Insect pollination.

Wind-pollinated flower
Stamen - stigma.

Structure A flower pollinated by an insect
Cassia carpel
Corolla with stamens

Wind-pollinated flowers are small, often green, odorless, and do not contain a cloaca. The anthers and stigmas hang outside the flowers as they mature, facilitating pollination by wind. See -ferti, pollen, and pollination lization in plants.


foetus
foetus m

The mammalian embryo after the development of its main manifestations. This happens in humans about three months after pregnancy. See pregnancy.


follicle-stimulating hormone (FSH)
folliculo - stimuline f

Follicle stimulating hormone. A hormone secreted by the pituitary gland. See hormones and ovulation.


food capture
prize of nourriture

Capturing food Many heterotrophs have evolved highly specialized methods and structures for obtaining food. Below are some diverse examples:
(a) Toothless mammals that eat ants, with a long, sticky tongue that catches ants. Blue whales have modified mouth sections to filter plankton from the water.

(b) Filter feeding: As is the case with blue whales, many aquatic organisms filter plankton.

Examples include: the mytilus mussel (which can be eaten as shown below) with one of its shells removed.

(c) Sucking feeding: Houseflies pass saliva out into their food, such as sugar, for example. Digestion occurs immediately, and the resulting liquid is then taken up by a suction pad called a proboscis.

To the stomach salivary gland - small tubes
Esophagus Muscles pump food into the intestinal proboscis

Female mosquitoes prick human skin, inject a fluid that prevents blood clotting, and then suck some blood. This feeding mechanism can cause malaria due to the possibility of transmitting the malaria parasite during feeding.

Eye is a hollow tube that sucks blood from a capillary
Mouth part skin of the host

Butterflies feed on nectar produced by flowering plants, and they suck nectar from the flower using a long, tube-like proboscis that is coiled when not in use.

The greenfly uses a long proboscis proboscis to suck plant juices from leaves and stems.

Ain Ratum wrapped in the stomach
- Acupuncture proboscis sucking food from sweat - Paper clip

(d) Toothless biting. Locusts eat the equivalent of their weight in plants every day. The locust has two powerful biting jaws, one of which is called a mandible seal. Each jaw has a very hard biting edge that applies to the other during biting in a precise and effective cutting process. See carnivore dentition, herbivore and omnivore.

Two seals.