Biology Past Questions And Answers
Chromosomes begin to condense 2. Centrioles separate and begin to form a mitotic spindle as they move towards opposite sides of the cell 3. The nucleolus breaks down During which phase of cell division do the given processes occur?
- A. Metaphase
- B. Anaphase
- C. Telophase
- D. Prophase
(a) List four adaptive features of animals that climb rain forest trees.
(b) State five important uses of water to organisms in the tropical rain forest.
(c) Describe how temperature as an ecological factor can be measured
(d)(i) Name two scientists who have contributed to the study of evolution.
(ii) List five evidences to support the occurrence of evolution.
View Discussion (0)WAEC 2003 THEORYThe period of inactivity seen in some animals during long period of heat or drought is
- A. Migration
- B. Aestivation
- C. Hibernation
- D. Adaptation
Which of the following organs is responsible for the production of insulin?
- A. Spleen
- B. Adrenal gland
- C. Thyroid gland
- D. Pancreas
Which of the following is a feature of the population pyramid of a developing country?
- A. long lifespan
- B. low birth rate
- C. low death rate
- D. short lifespan
Birds maintain their body temperature with the help of their
- A. blood which maintains constant temperature
- B. feathers which cover the body
- C. skin which conserves moisture
- D. veins which transport fluid of constant temperature to all body tissues
Which of the following is evidence of evolution?
- A. All of the above.
- B. Similarities in embryonic development
- C. Fossils of extinct organisms
- D. Homologous structures in different species
Haemophilia results from the mutation of the genes
- A. in the sex chromosome
- B. which control skin colour
- C. which control the mechanism for blood-clotting
- D. which control the formation of haemoglobin
Which of the following processes occurs in the second phase of meiosis?
- A. Homologous chromosomes separate
- B. Two daughter cells are formed
- C. Fertilization occurs
- D. Segregation of genes occurs
Which of the following protects the essential parts of the flower at bud stage?
- A. Stamens
- B. Sepals
- C. Petals
- D. Carpels