BIOLOGY THEORY: 1ai)Respiration is the process by which energy is liberated from organic food substances in the form of simple sugar. (1aii) Tabulate this plz: Gaseous exchange: It is the taking in of oxygen and giving out of carbondioxide, It involves living cells, It takes place at cell time, energy might not be release Aerobic respiration: It is the respiration that takes place in the pressure of oxygen, It involves animal only, that can survive with oxygen, It takes place in the presence of light Energy is usually released. (1b)residual air can be defined as the air that is found in the atmosphere. some of them are gotten from the activities that are been done on the surface of the earth. (1bii) it is used for breathing, it is used in combustion (1c) -Respiratory tract must be permeable -it must have a large surface area -it must be moist -it must be vascularised (1di)oxygen depth can be defined as the condition when there is lack of oxygen or insufficient amount of oxygen needed by a living organism (1dii) -excercise -accident -coma (2a) photosynthesis is defined by which green plants manufacturing their food making use of water in the presence of sunlight. (2b) (i) -sunlight -water availability -carbon(iv) oxide (ii)chlorophyII content (iii)water and oxygen gas (2c) water and oxygen gas -water react with carbon(iv)oxide to give glucose -oxygen is evolve to the surrounding and serve as source of air for animal (2d) there is no oxygen plant in lower depth of some lakes beacuse the oxygen content there is extremely low or even absent (2d)(i) there are no green plant at the lower depth of some lakes beacuase oxygen content reduces as the depth of the lakes increase. i.e oxygen is absent at the lower dept. (ii)they decompose organioc manure that serve as source of nutrient to plant. (iii)they help in soil aeration (8A) EXCRETION is the process by which the organism get rid of metabolism waste product. (ii) skin-water and sweat kidney-urine lung-carbon(iv)oxide liver-bile salt (8b) the kidney is supplied with blood vessels. the renal artery supply blood to the kidney while the renal vein takes away blood from the kidney. a long narrow tube called the ureter connects the kidney to the urinary bladder where urine is stored temporarily. the urinary bladder lead to the ureathra which opens to the evterior from which opens to the exterior from which urine is finally passed out. (8c) insect-malphigian tubule earthworm-flame cell
Posted on: Tue, 25 Jun 2013 09:48:37 +0000
Trending Topics
Recently Viewed Topics
© 2015