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- Chemical Reactions & Equations
- Acid, Bases & Salts
- Metals & Non Metals
- Carbon & Its Compounds
- Periodic Classification of Elements
- Life Processes
- Respiration
- Control and Coordination
- How Do Organism Reproduce
- Heredity and Evolution
- Light: Reflection and Refraction
- Human Eye and Colorful World
- Electricity
- Magnetic Effect of Electric Current
- Sources of Energy
- Our Environment
- Management of Natural Resources
Popular Questions
- Assertion : Plants excrete various waste Reason : They produce urea just like humans
- Assertion : Transpiration is a necessary evil Reason : It causes Water loss but
- Observe the following table carefully and match the components of part I with part II of the table. Write them in complete sentenc..
- Assertion : The main organ of human Reason : Kidneys perform the function of
- Assertion : Raw material needed for Reason : Nutrients provide energy to an organism.
- Assertion : Excretion is the biological process Reason : The mode of excretion is
- Assertion : Blood clotting prevents the leakage of blood Reason : It reduces the loss of blood from system
- The diagram shows parts of a flowering plant. where does the most transpiration take place?
- Assertion : Egestion is the removal Reason : Excretion is the discharge of
- Assertion : Interauricular septum separates Reason : Interventricular septum separates
- Assertion : Ultrafiltration involves filtration of blood under high pressure. Reason : Reabsorption of major amount of water occur..
- Assertion : Liver is known as Reason : It secretes salivary amylase
- The diagram shows a vertical section through the heart.
- A healthy woman consumes a litre of water at once.
- Plants excrete waste products from their body by various means. Justify the above statement.
- The diagram given below represents the liver, kidney and some associated blood vessels.
- Assertion : walls of the intestine Reason : These villi increase
- In the figure given along side, the structures associated with human kidneys are marked (X, Y and Z).
- figure given below is representing the dialysis machine for removing nitrogenous wastes in patient with a kidney failure.
- Assertion:Liver is known as the smallest gland of the body. Reason:It secretes salivary amylas
- Assertion : Lymph, also known as tissue Reason : It lacks erythrocytes
- What would be the consequences of
- Assertion : Translocation of sugar Reason : It is achieved by
- Describe double circulation in human beings.
- Explain, how the blood system carries waste products from liver to the kidneys.
- Assertion : Useful plant wastes are essential oils, tanning, gums, resins, natural rubber, etc. Reason : Rubber plant is the commo..
- Single circulation, i.e., blood flows through the heart
- Assertion : Tongue is a part of mouth that bears several taste buds. Reason : It is helpful in producing speech
- Assertion : All the arteries carry Reason : Pulmonary vein carries
- Example(s) of liquid waste product in plants is/are
- The diagram represents a part of human circulatory system. Where is the blood pressure highest?
- Proteins - A -> Peptones
- The xylem in plants are responsible for
- The diagram given along side shows the human excretory system. Identify the function of part labelled as X
- Most often during a kidney disorder, the colour of urine changes from yellow to others.
- (i) Define excretion. (ii) Name the basic filtration unit present in the kidney (iii) Draw excretory system in human beings and la..
- Name the excretory organs in unicellular organisms.
- Platelets helps in clotting of a blood at injured site.
- The given diagram shows parts of the urinari syatem of a mammal.
- An adult human on an average produces
