please tell fast.please tell fast.please tell fast
Answers
Answer:
Explanation:
Nuclues
Cyptoplasm
Cell memebrane
Rhizobium bacteria
Organisms need to take food to get energy and perform life processes. A living organism undergoes many life processes like nutrition, respiration, digestion, transportation, excretion, blood circulation, and reproduction. To perform all these life processes, the organism needs energy and nutrients.
ngestion
Ingestion refers to the intake of food
Ingestion takes place through Mouth
Digestion
Digestion refers to the breakdown of ingested food into simpler forms
Teeth, Stomach, Small intestine and secretion from various glands help in Digestion
Absorption
Absorption refers to the process in which digested food in absorbed in to the body fluids (Blood & lymph)
Small intestine plays a major role in Absorption
Assimilation
Assimilation refers to the process in which absorbed food is transported to different cells of the body
Egestion
Egestion refers to the process of removal of undigested food from the body
Large intestine plays a major role in Egestion
The parts of digestive tract are:
Mouth and buccal cavity
Food pipe/Oesophagus
Stomach
Small intestine
Large intestine
Rectum
Anus
There are some associated glands that secrete enzymes which help in digestion of food. These include:
Salivary glands
Liver
Pancreas
The digestive tract and the associated glands together constitute digestive system.
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Answer:
1. A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm
2. Rhizobium a bacterium they can take atmospheric Nitrogen and convert it into a soluble form.
3. Food is needed by all organisms for many purposes:
The main function of food is to help in growth.
Food provides energy for movement such as running, walking or raising our arms.
Food is also needed for replacement and repairing damaged parts of the body.
4.Food gives us the energy to fight against diseases.
Mouth — It includes teeth, salivary glands and tongue. It is the beginning of the digestive tract and the process of digestion begins from the mouth, where teeth help by breaking and grinding the food molecules followed by the saliva mixing with the food particles.
Pharynx –It is a fibromuscular, Y-shaped tube-like structure, attached to the terminal end of the mouth. It is involved in the passage of chewed food from the mouth through the esophagus.
Esophagus —This is a muscular tube, measuring 25 cm long and located near the trachea connecting to the pharynx. It is the upper part of the gastrointestinal tract and is mainly involved in delivering the food particles from the mouth to the stomach.
Stomach –It is a hollow and muscular organ, situated towards the left side of the abdominal cavity and beneath the diaphragm. It is a vital organ, which functions by storing the food, provides enough time to digest meals, produces hydrochloric acid and digestive enzymes that maintain the process of digestion.
Small Intestine –It is a thin and long tube-like structure measuring about 9 to 10 feet long and also the part of the lower gastrointestinal tract. The small intestine is located just behind the stomach, which is found completely coiled and consists of folds and ridges.
Large Intestine –This is a thick and long tube-like structure measuring about 4 to 5 feet in length. It is present just beneath the stomach and wraps over the superior and lateral edges of the small intestine. It functions by absorbing water and support in the breakdown of wastes to fetch small nutrients.
Liver –The liver is a large, reddish-brown, triangular-shaped organ of the digestive system, which is located to the right of the stomach. It functions by processing the absorbed food from the small intestine, produces bile, which helps in the digestion of fat in the small intestine.
