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