Free Introduction to Biology MCQs with Answers

51. It is a very effective program for the elimination and control of dangerous diseases in human society.

• A. Eugenic initiatives
• B. Bioremediation techniques
• C. Gene therapy strategies
• D. Integrated disease management program

Explanation: Integrated disease management programs employ a holistic approach combining multiple strategies to control and eliminate diseases on a larger scale.

52. All of the following are the physical methods to control bacteria except _:

• A. Sterilization
• B. Boiling
• C. Radiation
• D. Antiseptics

Explanation: Boiling, radiation, and sterilization are physical methods of controlling bacteria, whereas antiseptics are chemical agents, not physical methods.

53. The branch of biology that deals with the study of cells and their functions is called:

• A. Morphology
• B. Cytology
• C. Histology
• D. Anatomy

Explanation: Cytology (cell biology) is the study of the structure, function, and behavior of cells.

54. The study of the relationship between living organisms and their environment is known as:

• A. Ecology
• B. Taxonomy
• C. Embryology
• D. Physiology

Explanation: Ecology focuses on how organisms interact with each other and with their surroundings.

55. The branch of biology that deals with the study of heredity and variation is:

• A. Paleontology
• B. Genetics
• C. Evolution
• D. Taxonomy

Explanation: Genetics studies how traits are passed from parents to offspring and the variation among organisms.

56. The branch of biology that deals with classification and naming of organisms is:

• A. Taxonomy
• B. Morphology
• C. Anatomy
• D. Physiology

Explanation: Taxonomy organizes organisms into groups based on similarities and evolutionary relationships.

57. Which of these is an example of an organ level in plants?

• A. Xylem tissue
• B. Stomach
• C. Stem
• D. Mesenchyme

Explanation: The stem is an organ in plants. In plants, organs include roots, stems, and leaves. An organ is made up of different tissues (like xylem, phloem, parenchyma, collenchyma, etc.) working together for a common function. The stem helps in support, transport of water and food, and storage.

58. The part of the earth inhabited by living organisms, including land, ocean, and atmosphere:

• A. Biosphere
• B. Ecosystem
• C. Community
• D. Habitat

Explanation: The biosphere is made up of the parts of Earth where life exists. The biosphere extends from the deepest root systems of trees to the dark environment of ocean trenches to lush rainforests and high mountaintops. Scientists describe Earth in terms of spheres.

59. Which of the following describes coral reefs used by Hakeem in preparing eastern medicines?

• A. Diamond
• B. Emerald
• C. Ruby
• D. Marjan

Explanation: Red coral by the name of 'MARJAN' is used by Hakeems in preparing eastern medicines.

60. Feeding by living in or on the other organism (host) belonging to different species is called?

• A. Mineral nutrition
• B. Parasitic nutrition
• C. Saprophytic nutrition
• D. Symbiotic nutrition

Explanation: Feeding by living in or on another organism (host) belonging to a different species is called **parasitic nutrition** (Option B). Parasites obtain nutrients from their host organism, often causing harm or damage to the host in the process.