Biology Past Questions And Answers
Identical twins are produced under one of the following conditions
- A) two ova fertilized at the same time by the sperm
- B) one ovum fertilized, divides to give two embryos
- C) two ova fertilized by one sperm
- D) one ovum fertilized by two sperms
Which of the following is not generally a characteristic of an organism that is a k-strategist?
- A. Efficient use of energy
- B. Large body size
- C. Short life span
- D. Reproduction at a late age
The part of the brain responsible for peristalsis is the
- A. Olfactory Lobe
- B. Medulla Oblongata
- C. Hypothallamus
- D. Thalamus
one of the adaptation of life on trees by a monkey is its possession of digits which are
- A. extensible
- B. big
- C. opposable
- D. long
The products of respiration are
- A. nitrogen and water
- B. nitrogen and carbon dioxide
- C. water and oxygen
- D. carbon dioxide and water
(a)(1) Explain briefly chemosynthesis as a mode of nutrition.
(ii) Give two examples of organism that carry out chemosynthesis.
(b) List three gases in the atmosphere with their percentage composition.
| Gases in the atmosphere | Percentage composition |
(c) (i) State four characteristics of a salt marsh habitat.
(ii) Explain briefly how plants are modified for anchorage in a salt marsh habitat.
(d) (i) List four bacterial disease associated with poor food hygiene.
(ii) State three effects of poor food hygiene.
(e) A person was involved in a car accident and became unconscious due to excessive blood loss. Explain briefly how the blood lost could be restored.
(f) State three differences between tillage and bush burning as farming practices.
| Tillage | Bush burning |
Which of the following is used to inform the addressee that he has a registered parcel for collection?
- A. Counterfoil
- B. Express label
- C. Slip
- D. Telegram
Which of these is not associated with the movement of the toad, reptile or birds?
- A) Hopping
- B) Bopping
- C) Mapping
- D) Gliding
The association between protozoa and termites is an example of
- A. symbiosis
- B. parasitism
- C. predation
- D. saprophytism
The term caryopsis is used to describe a fruit in which the
- A. testa and pericarp are separate
- B. seed and endocarp are fused
- D. seed coat and fruit wall are impermeable
- C. testa and pericarp are fused