Energy flow in the ecosystem - Jamb Biology Past Questions and Answers

Question 1:

• JAMB 2019

A plant which grows on another plant without apparent harm to the host plant is called

A. An epiphyte
B. A saprophyte
C. A parasite
D. A predator
E. A hermaphrodite

Question 2:

• JAMB 1982

A pyramid of numbers can be defined as

A. The number of plants and animals in an ecosystem
B. An arrangement of organism according to their habitat
C. The numerical relationships of a food chain
D. The number of plants and animals in a population
E. The total number of species and general in a community

Question 3:

• JAMB 1995

In a food chain involving a primary producer, a primary consumer as well as a secondary consumer, the sharing of trophic energy is in the form that the

A. The primary consumer has more energy than the primary poducer
B. Secondary consumer takes up all the energy contents of the primary consumer
C. Energy is shared equally between the three groups of organism
D. Secondary consumer gets only a small portion of the energy contained in the primary producer

Question 4:

• JAMB 1999

The biomass is likely to increase in the sequence

A. 1→2→4→5
B. 1→3→4→5
C. 3→5→6→7
D. 5→4→3→1

Question 5:

• JAMB 2002

A step in the movement of energy through an ecosystem is a description that best fits the term

A. Food chain
B. Trophic level
C. Pyramid of numbers
D. Food web