Biology Past Questions And Answers
1491
The vector for yellow fever is?
- A. Aedes mosquito
- B. Anopheles mosquito
- C. tsetse fly
- D. blackfly
1492
A tissue can best be defined as
- A. an aggregate of similar cells
- B. an aggregate of cells performing a similar function
- C. an aggregate of similar cells performing the same function
- D. a mixture of different cells types performing the same function
1493
An advantage of a public limited company over a private one is the
- A. limited liability of share holders
- B. easy transferability of shares
- C. access to retained earnings
- D. less taxation by government
1494
The greatest influence on a stable ecosystem in nature is exerted by
- A. man
- B. pollution
- C. animals
- D. rainfall
1495
Which of the following is not a way of reducing air pollution?
- A. Siting factories and power stations away from residential areas
- B. Building tall factory chimneys
- C. Passing waste gases through filters and absorbers
- D. Using lead-free petrol in cars
1496
The properties of endocrine system include the following except
- A. secretion of hormones
- B. transportation by blood to target organ
- C. having specific effect
- D. release of secretion into ducts
1497
The protozoan plasmodium falciparum is transmitted by?
- A. female Anopheles mosquitoes
- B. female Aedes mosquitoes
- C. female Culex mosquitoes
- D. Female blackfly
1498
Which of the following organelles helps to remove excess water from cells?
- A. Mitochondrion
- B. Ribosome
- C. Contractile vacuole
- D. Golgi body
1499
The examples of autotrophic organisms include the following except
- A. Euglena
- B. Chlamydomonas
- C. Hydra
- D. Spirogyra
1500
A sugar solution was boiled with Fehling's solutions A and B and the colour remain blue. The sugar tested was
- A) Glucose
- B) maltose
- C) fructose
- D) sucrose