AIC SS 2 Biology Revision Test for 3rd Term 2022/23
  • 1. The major zones of the marine habitat include all except.........
A) Benthic zone
B) Supratidal zone
C) Littoral zone
D) Neptunic zone
  • 2. The excessive growth of plant life or algae in water courses or bodies caused by an increase in organic nutrients or minerals leading to the death of aquatic organisms is called ...........
A) Eutrophication
B) Etrophication
C) Eutriphication
D) Eutropication
  • 3. The following are the processes involved in the formation of urine except.......
A) Glomerulus in the bowman's capsule
B) Selective reabsorption
C) Hormonal secretion
D) Ultra filteration
  • 4. Selective reabsorption occurs in one of the following.
A) Urethra
B) Henle's loop
C) Distal tubule
D) Bowman's capsule
  • 5. Effects of food shortage on the size of a population include the following except.......
A) Competition
B) Decline in the rate of reproduction
C) Increased supply of a particular type of food
D) Emigration
  • 6. Abiotic factors affecting a population include the following except......
A) Heat
B) Parasites
C) Space
D) Water
  • 7. The following are biotic factors affecting a population except......
A) Food
B) Mortality
C) Light
D) Competition
  • 8. A factor which limits the population growth is called .......
A) Dispersal
B) Balance in nature
C) Limiting factor
D) Environmental resistance
  • 9. One of the following is not an importance of family planning to a nation.
A) Increased risk of STDs
B) Prevention of population explosion
C) Promotion of maternal and mother's health
D) Prevention of indiscriminate abortion
  • 10. The organelle used for osmoregulation in unicellular organisms such as amoeba and paramecium is called ..........
A) Cytoplasm
B) Contractile vacuole
C) Endoplasmic reticulum
D) Ribosome
  • 11. The maintenance of a fairly constant internal environment in an organism is known as .........
A) Neutralisation
B) Osmotic pressure balance
C) Homeostasis
D) Concentration gradient
  • 12. One of the following secrets synovial fluid which acts as a shock absorber.
A) Synovial fluid
B) Synovial membrane
C) Cartilage
D) Synovial cavity
  • 13. ------------- joint allows movement in almost all directions
A) Gliding
B) Hinge
C) Pivot
D) Ball and socket
  • 14. Muscles are attached to bones by means of strong whitish cord called ----------
A) Ligament
B) Tonsil
C) Tendons
D) Cartilage
  • 15. One of the following is not a sucking mouth part of animals exhibiting a sucking mechanism
A) Probosics
B) Scolex
C) Stylet
D) Labella
  • 16. One of the following antibodies cause microorganisms to stick together in the body and reduce their pathogenic actions.
A) Agglutinins
B) Antitoxins
C) Lysin
D) Precipitins
  • 17. The following are the characteristics of leucocytes except -------
A) Nucleated
B) Colourless
C) Concave and circular
D) Amoeboid in shape
  • 18. One of the following is not peculiar to the red blood cell
A) Old ones are destroyed in the liver
B) Colourless when seen singly
C) Circular and concave
D) Microscopic
  • 19. The following are parts of the chewing and biting mouth parts except ---------
A) Labium
B) Maxillae
C) Labrum
D) Mandibles
E) Probosics
  • 20. Pulmonary artery is the blood vessel connected to -------------.
A) Left auricle
B) Right ventricle
C) Right auricle
D) Left ventricle
  • 21. What is the main function of the kidney?
A) Filtration of blood
B) Production of hormones
C) Regulation of body temperature
D) Digestion of food
  • 22. Which of the following is a disease of the kidney?
A) Diabetes
B) Arthritis
C) Asthma
D) Influenza
  • 23. What are the effects of kidney diseases on the body?
A) Strengthened immune system
B) Increased blood pressure
C) Improved digestion
D) Enhanced vision
  • 24. Which of the following is a remedy for the effects of kidney diseases?
A) Dialysis
B) Chemotherapy
C) Physical exercise
D) Antibiotics
  • 25. What are the functions of the liver?
A) Production of red blood cells
B) Protection of the lungs
C) Regulation of body temperature
D) Detoxification of harmful substances
  • 26. Which of the following is a disease of the liver?
A) Pneumonia
B) Malaria
C) Cirrhosis
D) Osteoporosis
  • 27. What are the effects of liver diseases on the body?
A) Impaired digestion
B) Accelerated wound healing
C) Improved memory
D) Increased muscle strength
  • 28. Which of the following is a remedy for the effects of liver diseases?
A) Meditation
B) Liver transplantation
C) Physical therapy
D) Vitamin supplements
  • 29. What is the structure and function of the mammalian skin?
A) Muscle contraction and relaxation
B) Vision and hearing
C) Digestion and absorption
D) Protection and temperature regulation
  • 30. Where are the hormonal glands located?
A) Pancreas
B) Endocrine system
C) Lungs
D) Stomach
  • 31. What is the function of hormones?
A) Strengthening of bones
B) Production of energy
C) Regulation of body functions
D) Transmission of nerve impulses
  • 32. What is the effect of over-secretion of hormones?
A) Decreased heart rate
B) Weakened immune system
C) Increased blood pressure
D) Weight loss
  • 33. What is the effect of under-secretion (deficiency) of hormones?
A) Enhanced muscle strength
B) Improved cognitive function
C) Accelerated wound healing
D) Reduced growth rate
  • 34. Where are plant hormones primarily located?
A) Roots
B) Leaves
C) Flowers
D) Stem
  • 35. What are the functions of plant hormones?
A) Formation of seeds
B) Regulation of plant growth and development
C) Photosynthesis
D) Reproduction of plants
  • 36. What is a modern application of auxin in crop harvesting?
A) Pest control
B) Soil fertilization
C) Weed control
D) Disease prevention
  • 37. Which components make up the central nervous system?
A) Brain and spinal cord
B) Stomach and intestines
C) Heart and lungs
D) Liver and kidneys
  • 38. What is the structure and function of the spinal cord?
A) Oxygen exchange in the lungs
B) Production of hormones
C) Digestion and absorption of nutrients
D) Communication between the brain and body
  • 39. Which of the following is a component of the brain?
A) Neurons
B) Alveoli
C) Red blood cells
D) Nephrons
  • 40. What are the functions of the central nervous system?
A) Control of voluntary and involuntary body movements
B) Maintenance of body temperature
C) Digestion of food
D) Regulation of hormone production
  • 41. What are the differences between hormonal and neuronal coordination?
A) Hormonal coordination occurs only in plants, while neuronal coordination occurs only in animals.
B) Hormonal coordination is slower but more precise than neuronal coordination.
C) Neuronal coordination relies on electrical impulses, while hormonal coordination relies on chemical signals.
D) Neuronal coordination involves the release of hormones.
  • 42. What is the somatic nervous system responsible for?
A) Controlling involuntary body functions
B) Coordinating voluntary movements
C) Maintaining body temperature
D) Regulating hormone production
  • 43. What is the autonomic nervous system primarily involved in?
A) Processing sensory information
B) Controlling skeletal muscles
C) Conscious decision-making
D) Regulating internal body functions
  • 44. What is the structure and function of neurons?
A) Neurons are specialized cells that transmit electrical impulses.
B) Neurons produce hormones that regulate body functions.
C) Neurons control voluntary muscle movements.
D) Neurons are found only in the brain and spinal cord.
  • 45. How are neurons classified?
A) Based on their location in the body
B) Based on their size
C) Based on the direction of nerve impulse transmission
D) Based on their ability to produce hormones
  • 46. How are nervous impulses transmitted between neurons?
A) Through the digestive system
B) Through electrical signals
C) Through hormonal secretions
D) Through the bloodstream
  • 47. What is the pathway and action of a nerve impulse known as?
A) Neuronal feedback
B) Reflex arc
C) Synaptic transmission
D) Nervous system loop
  • 48. How is a conditional reflex characterized?
A) An involuntary response to a specific stimulus that has been learned
B) A voluntary action performed without conscious thought
C) An automatic response to pain or danger
D) A reflex that occurs only in the presence of hormones
  • 49. What is the role of conditional reflexes in behavior?
A) Coordinating voluntary muscle movements
B) Shaping and modifying learned behaviors
C) Controlling involuntary body functions
D) Regulating hormone production
  • 50. Which of the following is an example of a conditional reflex?
A) Regulating body temperature through shivering
B) Blinking in response to a bright light
C) Withdrawing a hand from a hot surface
D) Salivating at the smell of food
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