Jamb Biology 2023 Past Questions and Answers

Question 61:

• JAMB 2023

The alternate form of a gene is

A. Alternate type
B. Dominant character
C. Recessive character
D. Allele

Question 62:

• JAMB 2023

Which organs are part of the alimentary canal in the human digestive system?

A. Salivary glands, tongue, and pharynx
B. Large intestine, appendix, and rectum
C. Stomach, liver, and gallbladder
D. Oesophagus, pancreas, and small intestine

Question 63:

• JAMB 2023

Which of the following characteristics is typical of the phylum Arthropoda?

A. Radial symmetry
B. Closed circulatory system
C. Endoskeleton made of bones
D. Presence of a segmented body

Question 64:

• JAMB 2023

Which of the following is an example of conserving resources in an ecosystem

A. Excessive use of chemical fertilizers in agriculture
B. Introducing invasive species to an ecosystem
C. Implementing sustainable fishing practices
D. Cutting down trees for timber production

Question 65:

• JAMB 2023

Which of the following represents the correct hierarchical organization of life from the smallest to the largest scale?

A. Organs, tissues, cells, organisms, populations, communities, ecosystems
B. Cells, organs, tissues, organisms, populations, communities, ecosystems
C. Tissues, organs, cells, organisms, populations, communities, ecosystems
D. Cells, tissues, organs, organisms, populations, communities, ecosystems