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.
Which of the following processes is involved in the reproduction of developing organisms?
Budding
Germination
Fertilization
Pollination
Correct answer is C
Fertilization is the process by which the male and female gametes (reproductive cells) fuse to initiate the development of a new organism.
Which of the following is an example of an abiotic ecological factor?
Temperature
Competition
Predation
Symbiosis
Correct answer is A
Abiotic ecological factors are non-living factors that influence an ecosystem. They include physical and chemical factors such as temperature, sunlight, water availability, soil composition, and air quality.
Xylem
Epidermis
Parenchyma
Phloem
Correct answer is A
The tissue responsible for transporting water and minerals from the roots to the rest of the plant is called xylem. Xylem is a complex tissue composed of specialized cells, such as tracheids and vessel elements, which form long, interconnected tubes. These tubes facilitate the upward movement of water and minerals through the plant. Xylem also provides mechanical support to the plant.
Homozygous
Dominant
Heterozygous
Recessive
Correct answer is C
In monohybrid inheritance, the inheritance of a single gene is considered. An organism that carries two different alleles for a particular gene is referred to as heterozygous. The alleles may have different versions or variations of the gene. Heterozygous individuals carry two different alleles, with one being dominant and the other recessive.
II and III are correct
I and II are correct
I, II, III, and IV are correct
III and IV are correct
Correct answer is B
Fishes have a swim bladder or air bladder which helps them to remain buoyant without sinking in water. They are present in the body cavity.