19 EXCRETORY PRODUCTS AND THEIR ELIMINATION EXCRETORY PRODUCTS AND THEIR ELIMINATION PRACTICE QUESTIONS EXCRETORY PRODUCTS AND THEIR ELIMINATION Human Excretory System Anatomically, the human excretory system consists of a pair of kidneys, a pair of ureters, urinary bladder and the urethra. The kidneys contain tiny, numerous structures called nephrons. These are termed as the functional […]
18 BODY FLUIDS AND CIRCULATION QUESTION
18 BODY FLUIDS AND CIRCULATION QUESTION 18 BODY FLUIDS AND CIRCULATION QUESTION Which of the following use water from their environment as circulating fluid – (A) Sponges (B) Coelenterates (C) a and b (D) Fishes Blood, a special type of connective tissue (A) Consists of a fluid matrix (Plasma) (B) Has formed elements (C) […]
18 BODY FLUIDS AND CIRCULATION
18 BODY FLUIDS AND CIRCULATION BODY FLUIDS AND CIRCULATION PARCTICE QUESTION Blood Blood, also known as connective tissue, is responsible for transporting oxygen, nutrients, hormones, respiratory gases, to the body, and waste materials away from it. The total volume of the blood in the human body is approximately seven per cent of the total body’s […]
17 BREATHING AND EXCHANGE OF GASES QUESTION
17 BREATHING AND EXCHANGE OF GASES QUESTION 17 BREATHING AND EXCHANGE OF GASES QUESTION CHAPTER NOTES In which of the following gaseous exchange between O2 and CO2 occurs through general body surface? (A) Sponges (B) Coelenterates (C) Flatworms (D) All Match the followings correctly. (A) A-IV, B and C-III, D-I, E-II (B) A- IV, B […]
17 BREATHING AND EXCHANGE OF GASES
17 BREATHING AND EXCHANGE OF GASES BREATHING AND EXCHANGE OF GASES Breathing The process of exchange of O2 from the atmosphere with CO2 produced by the cell is called breathing. It occurs in two stages of inspiration and expiration. During inspiration air enters the lungs from atmosphere and during expiration air leaves the lungs. Difference […]
16 DIGESTION AND ABSORPTION QUESTION
16 DIGESTION AND ABSORPTION QUESTION CHAPTER NOTES What increases the use of physico – chemical concepts and techniques:- A) Forward approach B) Reductionist approach C) Both D) None of these Majority of physico – chemical studies employed by employing:- A) Tissue model B) Cell free system C) Both D) None of these Now a day […]
16 DIGESTION AND ABSORPTION
16 DIGESTION AND ABSORPTION Digestion The process in alimentary canal by which the complex food is converted mechanically and biochemically into simple substances suitable for absorption and assimilation in the body of animals/ organisms. Alimentary canal begin with anterior opening mouth and opens out posteriorly through anus. It comprises of following parts: Mouth: Mouth leads […]
15 PLANT GROWTH AND DEVELOPMENT QUESTIONS
15 PLANT GROWTH AND DEVELOPMENT QUESTIONS PLANT GROWTH AND DEVELOPMENT QUESTIONS CHAPTER NOTES Development is A) Growth B) Differentiation C) Growth + differentiation D) Growth – differentiation Growth of living being is/are- A) Irreversible B) Increase in size C) Increase in weight D) All of these Swelling of piece of wood when placed in water […]
15 PLANT GROWTH AND DEVELOPMENT
15 PLANT GROWTH AND DEVELOPMENT PLANT GROWTH AND DEVELOPMENT PRACTICE QUESTIONS Plant Growth and Development Root, stem, leaves, flowers, fruits and seeds arise in orderly manner in plants. The sequence of growth is as follows: Life cycle of plant: Plants complete their vegetative phase to move into reproductive phase in which flower and fruits are […]
14 RESPIRATION IN PLANTS QUESTIONS
14 RESPIRATION IN PLANTS QUESTIONS CHAPTER NOTES Respiration is defined as – A) Formation of C – C bonds of complex compound B) Breaking of C – C bonds of complex compound C) Breaking of C – N bonds of complex compound D) All of the above Respiration results finally to a formation and release […]