Each cerebral ganglion gives off several nerves supplying anteriorly the skin of snout, the tentacle and the buccal mass; and posteriorly the tentacle, the eye and the statocyst. Nill skhukranu ki problem se pareshan hai to jyada sochiye mat khaye ye desi dawai. These ganglia with their commissures and connectives are described below: 1. Each ridge contains branches of blood vessels. और अगर इन सवालो के जवाब दे दिये तो हम आपको Whatsapp और फेसबूक के राजा कहेंगे. It now gives off numerous small branches to the oesophageal area and a large branch to the right side which finally gives out a right pallial artery, supplying to the right part of mantle, a right siphonal artery, supplying to the right nuchal lobe and a penial artery, supplying to the copulatory organ. A tubular alimentary canal 2.
Such a gill is known as monopectinate gill. These tubules unite with one another to form larger tubules which terminate in two main ducts corresponding to two main lobes of the gland. Ovary with numerous minute ducts 2. The edge of the mantle is thick and contains shell glands which secrete the shell, above the thickened edge there is a supra-marginal groove. However, the paired ganglia of Pila are cerebral, buccal, pleural, pedal and visceral, while unpaired ganglia are supraintestinal and infraintestinal. It is seen as a slightly curved structure lying within its sheath. Red is the color of the bride and the state of being married.
Salivary Glands: The two salivary glands lying one on each side of the posterior limit of the buccal mass and partially cover the oesophagus. Is desi nuskhe ke sevan se Kuch hi dino me ho jayega aap ka ling lamba, mota or tight. Vagina: The vagina is a white or cream coloured, band-like structure lying immediately beneath the skin. Nuchal Lobes: The right and left pseudepipodia or nuchal lobes are fleshy and highly contractile processes of the mantle on either side of the head. All the gill lamellae are not of the same size; these are largest in the middle and gradually smaller towards the two ends. Copulation in Pila Globosa: Copulation in Pila globosa Fig. The walls of the sac are highly vascular, i.
Near the left pseudepipodium is a fleshy osphradium a typical molluscan sense organ. The pyloric chamber is tubular and has transverse folds on its inner surface. It contains a large cavity in which a genital duct and a few coils of intestine lie. The cone is spirally coiled from the tip inwards and downwards following the whorls of the shell. The radula moves forward and backward on the odontophore for rasping food particles; these movements of radula are called chain saw movements. Digestive System of Pila Globosa: The digestive system of Pila Globosa comprises: 1.
Visceral Ganglion: The visceral ganglion is formed by the fusion of two spindle-shaped ganglionic masses. Habit and Habitat of Pila Globosa : Pila globosa or the apple snail is one of the largest freshwater molluscs. It is a rectangular sac of dark red colour having a broad U-shaped internal cavity of rose-red colour. White clothes are recommended for Monday, Orange for Tuesday, Green for Wednesday, Yellow for Thursday, Red for Friday and Black for Saturday. The shell of the male is usually smaller in size and less swollen than the female. There are four chief sinuses in the body: a Anterior peri-visceral sinus.
When viewed from the ventral side with the peristome facing the observer, the mouth lies to the right of the columella and the shell is spiralled clockwise, then it is spoken of as being right-handed or dextral. Operculum of Pila Globosa: Fitting into the mouth of the shell is a calcareous operculum, its outer surface shows a number of rings of growth around a nucleus; the inner surface has an elliptical boss for attachment of muscles, the boss is cream- coloured and is surrounded by a groove. How would you describe your favorite green cardigan? The lines of growth of shell are visible, some of them appear as ridges known as varices. The mucus lubricates the radula and helps in the transport of food. In the blood plasma are stellate amoebocytes which are phagocytic, they remove waste substances and some of them carry on intracellular digestion. A pair of salivary glands 3. The oesophagus opens into it.
There is a well developed copulatory organ in the male but it is quite rudimentary in the female. Physiologically, the heart is said to be myogenic. It is of open type. Each lamella bears transverse ridges or pleats on both its anterior and posterior surfaces. Foregut: The foregut includes the mouth, buccal mass and oesophagus.
It consists of tall cells containing small basal nuclei. The radula is made of many transverse rows of horny teeth. Owing to a single external opening, the excretory products from the posterior chamber are collected and emptied into the anterior chamber, from where they are discharged into the pallial cavity through the external renal opening. The ctenidial axis is provided with an afferent blood vessel carrying deoxygenated blood and an efferent blood vessel carrying oxygenated blood from gills to heart. It sends blood through numerous branches, to the gill-lamellae for purification. The dorsal wall of the pulmonary sac is densely pigmented, while the ventral wall is creamy white. Secretion of digestive gland digests various kinds of food but cellulose is digested inside the resorptive cells only.
Internally all the whorls of the shell are freely communicated with one another; such a shell is called unilocular. फेल हो गए क्या उत्तर — प्लेट खुली रात में पैदा होती हरी घास पर सोती हूँ मोती जैसी मूरत मेरी बादल की मैं पोती हूँ बताओ क्या? It extends from the uterus to the upper end of the columellar muscle. At this time the head and foot is fully extended and the two nuchal lobes further increase in size and the left lobe takes the form of a distinct gutter in which a current of water flows. The auricle communicates with the ventricle by an aperture auriculo-ventricular opening having two semi-lunar valves, so arranged as to allow the blood from the auricle to flow into the ventricle but not in the reverse direction. External Features of Pila Globosa 3. The renal chambers, however, remove waste substances from the blood. The lamellae on the floor are arranged on either side of a similar median axis, the afferent renal sinus which is the branch of the peri-intestinal sinus.
The acrosome is poorly developed, the nucleus is elongated, broad and curved but not spirally coiled ; the middle piece is short and the number of axial filaments varies from 4—8. Before sharing your knowledge on this site, please read the following pages: 1. The renal and pericardial cavities communicate, but the cavity of gonad is unconnected. Patti patti gulaab ho jaatee, Har kalee meharkhwaab ho jaatee Tune daalee naa mehfisha nazare, Varna shabnam sharaab ho jaatee Patti patti gulaab kya hogee Har kalee meharkhwab ho jaatee Jisane lakhon hasin dekhen ho, Usakee niyat kharaab kya hotee La pila de sakiya La pila de sakiya paimaana Paimaane ke baad Hosh kee baate karunga Hosh kee baate karunga Hosh mein aane ke baad La pila de sakiya……. It extends anteriorly up to the stomach and digestive gland.