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.
Locomotion
Homeostasis
Transpiration
Photosynthesis
Correct answer is D
No explanation has been provided for this answer.
The outer membrane that covers the brain is
Myelin sheath
Dura mater
Arachnoid membrane
Pia mater
Correct answer is B
Dura mater is a membrane that envelops the arachnoid mater. It surrounds and supports the dural sinuses (also called dural venous sinuses, cerebral sinuses, or cranial sinuses) and carries blood from the brain toward the heart
Which parts provides food for the developing chick?
2 and 3
4 and 5
3 and 4
2 and 5
Correct answer is C
Yolk (3) & Albumen (4) provide food for the developing chick.
Albumen is a solution of protein in water that is secreted by the oviduct of birds and some reptiles. Albumen surrounds the embryo and yolk, which it cushions within the shell of the egg. It is eventually absorbed by the embryo as food.
Which of the following relationship involves only one organism?
Saprophytism
Commensalism
Parasitism
Symbiosis
Correct answer is A
A saprophyte or saprotroph is an organism which gets its energy from dead and decaying organic matter. This may be decaying pieces of plants or animals. This means that saprophytes are heterotrophs. They are consumers in the food chain.
A plant tissue that carries water and mineral salt is
Xylem
Cortex
Phloem
Cambium
Correct answer is A
Xylem transports water and mineral salts from the roots up to other parts of the plant, while phloem transports sucrose and amino acids between the leaves and other parts of the plant.
The xylem, vessels, and tracheids of the roots, stems, and leaves are interconnected to form a continuous system of water conducting channels reaching all parts of the plants.