1. What are the two types of digestion?
2. What are photoautotrophs?
3. What are the various factors effecting photosynthesis?
4. How are parasites classified?
5. How does nutrition take place in Amoeba.
6. Name the digestive glands in the human digestive system and mention their secretion?
7. Draw and label human digestive system.
8. Explain the process of autotrophic nutrition in plants.
9. Describe the processes that happen in human alimentary canal.
Answers
Answer:
1.incomplete nd complete
2.plants which make food throught photosynthesis
3.temperature,enzyme
4.There are three main classes of parasites that can cause disease in humans: protozoa, helminths, and ectoparasites
5.Nutrition in an amoeba occurs through a process called phagocytosis where the entire organism pretty much engulfs the food it plans on eating up. The mode of nutrition in amoeba is known as holozoic
6.Digestive glands includes salivary glands, pancreas, liver, gastric glands and intestinal glands. Out of these, salivary glands, pancreas and liver are major glands.
7.do it yourself
Answer: 1) complete and incomplete.
2.plants which make food throught photosynthesis
4.There are three main classes of parasites that can cause disease in humans: protozoa, helminths, and ectoparasites
6)There are four digestive glands in human digestive system.
1. Salivary glands -salivary amylase
2. Liver- bile juice
3. Gall bladder-
4. Pancreas- pancreatic juice
9)Humans have holozoic nutrition, that means the food is consumed as a whole and the digestion occurs internally. It can be described as:
1. Ingestion of food- The food is taken in the oral cavity in the process called the ingestion. The teeth help in grinding of the food, salivary amylase helps in partial breakdown of the starch and the tongue helps in mixing the food with saliva and helps in swallowing it. The food is now called bolus.
2. Digestion- The process of break-down of complex substances into simpler substances is called digestion and it starts with the mouth where physical break-down occurs along with some chemical digestion. The bolus is swallowed in and it arrives in stomach where the digestion of proteins occurs due to presence of the enzyme pepsin. Bolus is now called the chyme. This chyme now moves into the small intestine where rest of the process of digestion will be completed. The pancreatic juice, the intestinal juice and the bile will result in breakdown of carbohydrates, fats and the rest of the proteins. The chyme is now called the chyle and it moves to the large intestine where the water is absorbed.
3. Absorption- The digested food is absorbed via the finger-like projections present on the inner surface of the small-intestine and the reach the blood stream.
4. Assimilation- The absorbed food is then used by different tissues for the energy generation. The excess food is stored as glycogen in the liver and s fats in adipose tissue.
5. Excretion- The undigested material passes from the small-intestine to the rectum of the large-intestine, from where it is removed from the body through anus.
Please see the attachment for nutrition in amoba
