Single celled organisms no specific organs for taking in food exchange of gases or removal of wastage from the body may be needed because the entire surface of the organism is in contact with the environment
The tiny pores present on the surface of the leaves is called stomata the gaseous exchange takes place in the leaves through this pores
Que
What are guard cells
Ans
Opening and closing of stomata is a function of guard cell the guard cell swell when the water flows into them and causing the stomatal pore to open while the pore close when a guard cell shrink
Que
How does nutrition in amoeba takes place
Ans
The single celled organism amoeba takes nutrition by the process known as pseudo pedia
Que
How respiration in the plants occur
Ans
Plants respire generally through stomata in some cases it also has fire to lenticels present in the stem in order to understand what the lecture given below
Que
What is breathing
Ans
Intake of Oxygen and exhale of carbon dioxide from the nostrils is known as breathing
Que
What is the difference between respiration and breathing
Ans
Breathing is only intake of Oxygen and exhale of carbon dioxide from the nostril but on the other hand respiration is the conversion of glucose into energy in form of ATP using the oxygen
Transportation in Human Beings
Blood and Lymph are two medium of Transportation in organisms
Que - What are main components of blood?
Ans - The main components of blood are
1- Plasma
2- RBC ( Red Blood Cell)
3- WBC ( White Blood Cell)
4- Platelets
Que - Why blood is red ?
Ans - The colour of blood is red because it contains red pigment called haemoglobin in its cells
Que - Why white blood cells are called soldiers of our body ?
Ans - WBC ( white blood cells ) help us to fight against germs which causes diseases They are called soldiers of body because they manufacture antibodies which are
Helpful in digesting bacteria
Que What is clotting of Blood
Ans In blood platelets are present which contains thrombin which helps in clotting of blood when we have any cut with knife or in case of injury
Que. How many chambers are present in heart of human beings
Ans Heart of himan beings is four chambered
Que --What are functions of blood
Ans -- Functions of blood are
1) It helps in transportation of oxgen through RBC
2) It helps in transporting food from one cell to another
3) It regulates the body temperature
4) White blood cells are helpful in removing harmul bacteria in body
Que --What are three types of vessels are found in blood
Ans - There are three types of blood vessels
1) Arteries -- These contain oxygenated blood from heart to different parts of body . These are thick walled vessels and blood flow with great pressure They are red in colour They are deep seated vessels
2) Veins - These contain deoxygenated blood flowing from parts of body to lungs It contains blood rich in carbon dioxide They are thin walled vessels The blood flow in less pressure They are blue in colour.
3) Capillaries These are network of vessels connecting arteries and veins
