Improve Write differences between (ASI) a) autotrophic nutrition - heterotrophic nutrition b) Ingestion - digestion c) Light reaction - dark reaction d) Chlorophyll - chloroplast 2. Give reasons (AS1) a) Why photosynthesis is considered as the basic energy source for most of living world? b) Why is it right to call the dark phase of photosynthesis as a light independent phase? c) Why is it necessary to destarch a plant before performing any experiment on photosynthesis? d) Why is not possihle to demonstrate respiration in green plant kept in sun light? B. Give examples (ASI) a) Digestive enzymes b) Organisms exhibiting heterotrophic nutrition c) Vitamins d) Nutritional deficiency diseases . From where do plants get the raw materials required for photosynthesis?(ASI) 5. Explain the process of photosynthesis in with the help of a flow chart? (ASI) 6. Name three end products of photosynthesis? (ASI) 5. What is the substance that connects light reaction and dark reaction? (AS1) B: In most of leaves the upper surface will be more green and shiny than the lower surface. Why? (ASI) 9. Explain the structure of chloroplast with a neatly labeled sketch. (AS5) 10. What is the role of acid in stomach? (ASI) 11. Mention the names of glands and organs which help in digestion? (ASI) 12. How is the small intestine designed to assimilate the food? explain. (ASI) 13. How are fats digested? Where do they get digested? (AS1) 14. What is the role of saliva in the digestion of food? (ASI) 5. What will happen to protein digestion as the medium of intestine is gradually rendered alkaline? 3 (ASI) 16. What is the role of roughages in the alimentary tract? (ASI) 7. What is malnutrition? Explain few nutritional deficiency diseases. (ASI) 8. How do fungi and bacteria obtain their nourishment? (AS2)
Answers
Answer:
the role if saliva in digestion system is that they mixes the food properly.
the three end product of photosynthesis is water sunlight and carbon dioxide
Hey there, here is your answer
1. a) Autotrophs are organisms that prepare their own food through the process of photosynthesis, whereas heterotrophs are organisms that cannot prepare their own food and depend upon autotrophs for nutrition.
b) The main difference between ingestion and egestion is that ingestion is the intake of food into the body whereas egestion is the elimination of wastes out of the body. Ingestion occurs through the mouth in animals. In protozoa, ingestion occurs by endocytosis. ... In protozoa, the egestion occurs by exocytosis.
2. a) Photosynthesis is considered as the basic energy source for most of the living world because all organisms directly/ indirectly depend on the plants for their food and nutrition.
b) The dark phase of photosynthesis can be called as light independent phase since it does not require sunlight. In fact, the dark reaction uses the ATP and NADPH generated in the light reaction to synthesize carbohydrate from carbon dioxide and water.
c) It is important to destarch a plant before performing any experiment on photosynthesis so that it can be established whether or not a particular factor (carbon dioxide/ light/ water) is important for the photosynthetic reaction.
d) It is important to destarch a plant before performing any experiment on photosynthesis so that it can be established whether or not a particular factor (carbon dioxide/ light/ water) is important for the photosynthetic reaction.
3. Vitamin- Vitamin A, Vitamin D
4. Required raw materials for photosynthesis
Carbon Dioxide – Plants get CO2 from atmosphere through stomata. Water – Plants absorb water from soil through roots and transport to leaves. Sunlight – Sunlight, which is absorbed by the chlorophyll and other green parts of the plant.
5. Photosynthesis is the process that happens in every autotrophic organisms like green plants, they use light energy from the sun to make sugar and oxygen gas from CO and water. ... Carbon dioxide and oxygen enter and exit the plant leaves through stomata.
6. Glucose and oxygen are the final products of photosynthesis. We all know that photosynthesis is a process in which green plants use sunlight to make their own food. Photosynthesis requires sunlight, chlorophyll, water, and carbon dioxide gas.
10. The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins. The acidic gastric juice also kills bacteria. ... Together with the bicarbonate, this ensures that the stomach wall itself is not damaged by the hydrochloric acid.
11. The salivary glands, liver and gall bladder, and the pancreas aid the processes of ingestion, digestion, and absorption. These accessory organs of digestion play key roles in the digestive process.
12. The small intestine has millions of tiny finger-like projections called villi. These villi increase the surface area for more efficient food absorption. Within these villi, many blood vessels are present that absorb the digested food and carry it to the bloodstream.
13. The majority of fat digestion happens once it reaches the small intestine. This is also where the majority of nutrients are absorbed. Your pancreas produces enzymes that break down fats, carbohydrates, and proteins. Your liver produces bile that helps you digest fats and certain vitamins.
14. The role of saliva in the digestion of food are, It moistens the food for easy swallowing. It contains a digestive enzyme called salivary amylase, which breaks down starch into sugar.
15. The food coming from the stomach to intestine is acidic in nature. In the alkaline medium, pancreatic enzyme trypsin can act on the food and digests the proteins
16. Roughage is simply referred to as dietary fiber. It is the indigestible portion of food obtained from plants. They do not provide any nutrient to our body but play an essential part of a healthy diet plan. Functions of roughage: Its main function is to add bulk to the diet, which in turn aids in the digestion process and healthy Function of the bowel system. Prevents constipation and helps in getting rid of undigested food. They help in retaining water in the body. Some roughage foods include fruits, apples, pears, and whole grapes, whole grains and green leafy vegetables.
17. Malnutrition is a condition that results from eating a diet which does not supply a healthy amount of one or more nutrients. This includes diets that have too little nutrients or so many that the diet causes health problems. The nutrients involved can include calories, protein, carbohydrates, fat, vitamins or minerals.
18. Non-green plants such as fungi and bacteria obtain their nourishment from decaying organic matter in their environment. This matter comes from dead animals and plants. Such organisms are called saprophytes.
I hope this is enough for you