Life Processes

Which of the following equations is the summary of photosynthesis? (a) 6CO2 + 12H2O → C6H12O6 + 6O2 + 6H2O (b) 6CO2 + H2O + Sunlight → C6H12O6 + O2 + 6H2O (c) 6CO2 + 12H2O + Chlorophyll + Sunlight → C6H12O6 + 6O2 + 6H2O (d) 6CO2 + 12H2O + C

Artificial kidney is a device which carries out …………… to remove nitrogenous waste products from the blood.

When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of (a) oxygen (b) carbon dioxide (c) nitrogen (d) water vapour

The major driving force for the water in the xylem during day time is the ……………

The tubular parts of the nephron selectively …………… the substances needed by the body.

Fishes have a heart with …………… chambers while the amphibians have …………… chambers in their heart.

A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains (a) complex proteins (b) simple proteins (c) fats (d) starch

Lack of oxygen in muscles often leads to cramps among cricketers. This results due to (a) conversion of pyruvate to ethanol (b) conversion of pyruvate to glucose (c) non conversion of glucose to pyruvate (d) conversion of pyruvate to lactic

Which is the first enzyme to mix with food i the digestive tract? (a) Pepsin (b) Cellulose (c) Amylase (d) Trypsin

The extracellular fluid released from the capillaries is: (a) serum (b) plasma (c) lymph (d) mucus

The part where the exchange of gases occurs during respiration is: (a) Lungs and larynx (b) Alveoli and throat (c) Throat and lungs (d) Alveoli and capillaries

Plants store most of their wastes in the membrane bound structures called …………… present in their cells.

Choose the correct path of urine in our body (a) kidney → ureter → urethra → urinary bladder (b) kidney → urinary bladder → urethra → ureter (c) kidney → ureters → urinary bladder → urethra (d) urinary bladder → kidney → ureter → urethra

The process of digestion is completed by: (a) Intestinal juice (b) trypsin (c) bile juice (d) pepsin

In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body? (a) Pisces and amphibians (b) Amphibians and reptiles (c) Amphibians only (d) Pisces only

The enzyme responsible for the digestion of proteins in the small intestine is: (a) Pepsin (b) Trypsin (c) Amylase (d) Lipase