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