Life Processes
What is the mode of nutrition in fungi?
(a) Autotrophic
(b) Heterotrophic
(c) Saprophytic
(d) Parasitic
Blood vessel carry blood from lungs to heart through:
(a) Pulmonary artery
(b) Pulmonary vein
(c) Coronory artery
(d) None of these
Which cell organelle is involved in breakdown of glucose to produce energy for metabolic activities?
(a) Mitochondria
(b) Chloroplast
(c) Endoplasmic reticulum
(d) Golgi body
Villi present on the internal wall of intestine help in the
(a) Emulsification of fats
(b) Breakdown of proteins
(c) Absorption of digested food
(d) Digestion of carbohydrates
What is the final product of photosynthesis?
(a) Protein
(b) Fat
(c) Starch
(d) Mineral salt
During vigorous physical exercise, lactic acid is formed from glucose inside the muscle cells because
(a) there is lack of oxygen
(b) there is lack of water
(c) there is excess of carbon dioxide
(d) none of the above
Instrument used to measure blood pressure is
(a) barometer
(b) potometer
(c) thermometer
(d) sphygmomanometer
In which order do these events occur in human nutrition?
(a) Digestion - ingestion - absorption - assimilation
(b) Digestion - ingestion - assimilation - absorption
(c) Ingestion - digestion - absorption - assimilation
(d) Ingestion - digestion - assimilation - absorption
Which of the following is responsible for the transport of water and minerals from roots to aerial parts of the plant? (
(a) Xylem
(b) Phloem
(c) Cortex
d) Both (a) and (b)
Which of the following is not a purpose of transpiration?
(a) Supplies water for photosynthesis
(b)Helps in translocation of sugar in plants
(c) Cools leaf surface
(d) Transports minerals from the soil to all the parts of the plant
Which chambers of human heart contain oxygenated blood?
(a) Left atrium and left ventricle
(b) Left atrium and right ventricle
(c) Right atrium and left ventricle
(d) Right atrium and right ventricle
The process of conversion of glucose into pyruvic acid occurs in
(a) mitochondria
(b) cytoplasm
(c) outside the cell
(d) chloroplast
The sites of exchange of wastes, nutrients, gases and hormones between the blood and body cells are the:
(a) arteries
(b) arterioles
(c) capillaries
(d) veins
The function of the glomerulus and Bowman’s capsule of the nephron is to:
(a) reabsorb water into the blood
(b) eliminate ammonia from the body
(c) reabsorb salts and amino acids
(d) filter the blood and capture the filtrate
Structural and functional unit of kidney is
(a) renal pelvis
(b) nephridia
(c) nephron
(d) hilum
Choose the incorrect pair.
(a) Ultrafiltration-Glomerulus
(b) Concentration of urine-Collecting duct
(c) Transport of urine-Ureter
(d) Storage of urine-Urinary bladder
Proteins —(A)— Peptones Identify the enzyme A involved in the above reaction.
(a) Salivary amylase
(b) Bile juice
(c) Pepsin
(d) Lipase
Digestion of food in human starts from:
(a) Duodenum
(b) Small intestine
(c) Mouth
(d) Large intestine
Which one indicates hypertension or high Blood Pressure (BP)?
(a) 120/80
(b) 110/70
(c) 130/80
(d) 140/90
Veins can be differentiated from arteries because the veins:
(a) have valves
(b) have hard walls
(c) have pure blood in them
(d) have thick walls
Main excretory organ of humans is
(a) kidney
(b) lungs
(c) skin
(d) liver
Example(s) of liquid waste product in plants is/are
(a) rubber
(b) clove oil
(c) gum
(d) All of these
The breakdown of pyruvate to give carbon-di-oxide,water and energy takes place in:
(a) cytoplasm
(b) mitochondria
(c) chloroplast
(d) nucleus
The process of transpiration in plants helps in:
(a) Opening of stomata
(b) Absorption of CO2 from atmosphere
(c) Upward conduction of water and minerals
(d) Absorption of O2 from atmosphere
Which of the following structures is involved in gaseous exchange in woody stem of a plant?
(a) Stomata
(b) Lenticel
(c) Guard cell
(d) Epidermis