UHA Biology Notes 9th Class Chapter-9 Important short Question: 1. What is meant by the cardiac cycle? کارڈیک سائیکل سے کیا مراد ہے؟ Ans: The alternation relaxation and contraction make up the cardiac cycle. One complete cardiac makes one heartbeat. ت بدیلی میں نرمی اور سکڑاؤ کارڈیک سائیکل بناتا ہے۔ ایک مکمل کارڈیک ایک دل کی دھڑکن بناتا ہے۔ 2. What is the importance of transpiration? Ans: Transpiration is a beneficial process in the sense that creates a pulling force are called transpiration pull, which is responsible for the conduction of water and salts from root to upperparts. ٹرانسپائریشن اس معنی میں ایک فائدہ مند عمل ہے جو کھینچنے والی قوت پیدا کرتا ہے جسے ٹرانسپیریشن پل کہتے ہیں، جو پانی اور نمکیات کو جڑ سے اوپری حصوں تک پہنچانے کا ذمہ دار ہے ۔ 3. What is meant by human blood plasma? Ans: Plasma is primarily water in which proteins, salts metabolites, and wastes are dissolved. Water constitutes 90 to 92% of...
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UHA Biology Notes 9th Class Chapter-8 Important short Question: 1.Write brief notes in carbohydrates and portion ? Ans: Carbohydrates: Carbohydrates are the basic source of energy for all animals. About half to 2/3 of the total calories every animals consumes daily are from carbohydrates. Glucose is the most often used carbohydrates for energy. Other useful carbohydrates are maltose, lactose, sucrose and starch. Carbohydrates contain 04 kilocalories per gram. Humans get carbohydrates from the foods like bread, pastas, beans, potatoes, bran ,rice and cereals. Proteins: Proteins are composed of amino acids. Proteins are essential components of the cytoplasm, membranes and organelles. They are also the major components o...
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UHA Biology Notes 9th Class Chapter-3 Important short Question: 1. Define Taxonomy? Ans: The branch of biology which studies about naming and classification of organisms into groups and subgroups is called taxonomy. 2. What is meant by biodiversity? Ans: The term biodiversity has been derived from bio and diversity. The variety within species and among species is called biodiversity. 3. Write down two characteristics of the kingdom Protista. Ans: In this kingdom eukaryotic, unicellular and simpler multicultural organisms are included. Animals like protists i.e protozoa are also included. Whose cells lack cell walls and chlorophyll. 4. What is the five-kingdom system? Ans: The classification system in which living organisms are classified in five groups is called the Five kingdom classification system. This system is based upon the cellular organization and mode of nutrition. 5. Describe two reasons fo...