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Answer 1

Answer:

Q. 5 1. Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. The importance of photosynthesis in our life is the oxygen it produces. Without photosynthesis there would be little to no oxygen on the planet.

2. Heterotrophic nutrition is a mode of nutrition in which organisms depend upon other organisms for food to survive. They can't make their own food like Green plants. Heterotrophic organisms have to take in all the organic substances they need to survive. For eg, humans, cats, etc.

Q. 6 1. The process of taking in food and using it for growth, metabolism, and repair.

2. Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities.

3. Symbiosis is any type of a close and long-term biological interaction between two different biological organisms.

4. Assimilation is the movement of digested food molecules into the cells of the body where they are used.

5. Digestion, sequence by which food is broken down and chemically converted so that it can be absorbed by the cells of an organism and used to maintain vital bodily functions.

Q. 7 diagram do on your own.

Q. 8 1. Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. In the large intestine peristalsis helps water from undigested food be absorbed into the blood stream.

2. Villus, plural villi, in anatomy any of the small, slender, vascular projections that increase the surface area of a membrane. The villi of the small intestine project into the intestinal cavity, greatly increasing the surface area for food absorption and adding digestive secretions.

3. Ruminant Digestion. Like other vertebrates, ruminant Artiodactyla (including cattle, deer, and their relatives) are unable to digest plant material directly, because they lack enzymes to break down cellulose in the cell walls. Digestion in ruminants occurs sequentially in a four-chambered stomach.

Explanation:

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