Biology Past Questions and Answers

Question 5021:

• JAMB 2023

Which of the following statements best describes the role of competition in the process of adaptation?

A. Competition leads to the selection of individuals with favorable traits for survival and reproduction
B. Competition ensures equal distribution of resources among individuals in a population
C. Competition leads to the development of new traits and adaptations in a population
D. Competition reduces the need for adaptations as individuals coexist peacefully

Question 5022:

• JAMB 2023

Which of the following statements is true regarding sex-linked traits?

A. Sex-linked traits are located on the sex chromosomes
B. Sex-linked traits are inherited only from the mother
C. Sex-linked traits are more commonly observed in females
D. Sex-linked traits are not influenced by hormonal factors

Question 5023:

• JAMB 2023

Which of the following is a plant hormone responsible for promoting cell elongation and growth?

A. Abscisic acid
B. Gibberellins
C. Ethylene
D. Cytokinins

Question 5024:

• JAMB 2023

Which of the following is a primary source of pollution in aquatic ecosystems?

A. Soil erosion
B. Industrial discharge
C. Air pollution
D. Deforestation

Question 5025:

• JAMB 2023

Which of the following mechanisms is responsible for providing support in plants?

A. Muscles and bones
B. Exoskeleton
C. Endocrine system
D. Cell walls and turgor pressure