How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.
Higher organisms use a transport system and not diffusion only to distribute nutrients because
the ratio of their surface area to volume is small
metabolic waste products diffuse to the surface of the organisms
the rate at which nutrients and other substances diffuse increases
substances to be transported move shorter distances to reach the numerous cells
the internal structures of the organisms are in direct contact with the environment
Correct answer is A
No explanation has been provided for this answer.
Which of the following is not a tissue found in plants?
Epidermis
Phloem
Xylem
Dermis
Mesophyll
Correct answer is D
No explanation has been provided for this answer.
Which of the following pairs of tissues is responsible for strengthening the plant?
Phloem and Epidermis
Parenchyma and Cambium
Collenchyma and Sclerenchyma
Collenchyma and Cambium
Xylem and Cambium
Correct answer is C
Collenchyma cells have thin primary walls with some areas of secondary thickening. Collenchyma provides extra mechanical and structural support, particularly in regions of new growth.
Sclerenchyma cells have thick lignified secondary walls and often die when mature. Sclerenchyma provides the main structural support to a plant.
Which of the following statements is correct?
The biceps muscles originates on the head of the humerus
The biceps muscle is inserted at the ulna
The triceps muscle originates at the scapula and at head of the humerus
The ulna is pulled up when the biceps are relaxed
The radius is the point where the triceps muscle is inserted
Correct answer is C
No explanation has been provided for this answer.
Which of the following groups carry out similar functions in living things?
Vertebral column, chitin, and guard cells
Sclerenchyma, cartilage, and chitin
Tendon, chitin, and neuron
Collenchyma, Intercellular spaces, and blood vessels
Blood vessels, lymph, and shell
Correct answer is B
No explanation has been provided for this answer.