The appendicular skeleton is composed of the pectoral girdle?
- A. pelvic girdle, fore and hind limbs
- B. pelvic girdle and fore limbs
- C. lumbar vertebrae and pelvic girdle
- D. lumbar vertebrae, fore and hind limbs
Which of the following is a measure for the control of bilharzia?
- A. Cutting low bushes around homes
- B. Application of molluscicides in water bodies
- C. Screening windows and doors with mosquito nets
- D. Application of herbicides in water bodies
People who suck petrol with their mouths run the risk of increasing in their blood the concentration of
- A. iron
- B. lead
- C. calcium
- D. magnesium
Which of the following is TRUE of the process of conjugation in Paramecium?
- A. Micronucleus disintegrates
- B. Each ex-conjugant divides only once
- C. Macro nucleus undergoes division
- D. Each micronucleus divides twice
The blood vessel which carries blood from the alimentary canal to the liver is the?
- A. hepatic artery
- B. hepatic vein
- C. hepatic portal vein
- D. mesenteric artery
Which of the following food substances will produce a brick-red colour when warmed with Benedict’s solution?
- A. Glucose
- B. Starch
- C. Egg White
- D. Maltose
The villus in the small intestine is significant because it?
- A. increases the surface area for absorption
- B. increases the surface area for digestion
- C. assists in mixing digested food
- D. assists in filtering undigested food
Aged erythrocytes are destroyed in the?
- A. pancreas
- B. liver
- C. lymph nodes
- D. kidney
In the mammalian respiratory system. exchange of gases occurs in the?
- A. lungs
- B. bronchi
- C. bronchioles
- D. alveoli
In demonstrating the importance of mineral elements in plants, the culture bottle must be darkened to?
- A. prevent algal growth in culture solution
- B. allow root growth
- C. prevent breakdown of mineral elements
- D. prevents photosynthesis in the root
When the original king and queen of termites die, they are replaced by
- A. the king and queen of another colony
- B. some adult reproductives from the same colony
- C. some adult workers which are specially fed to breed
- D. developing nymphs nurtured as secondary reproductives
The initial volume of water poured into a bag of dry soil was 50ml and the amount that drained through was 35mI. The percentage water content of the fully soaked soil is therefore?
- A. 46.7
- B. 25.0
- C. 20.0
- D. 30.0
Which of the following is NOT regarded as a pollutant on land or in the air?
- A. Smoke
- B. Nitrogen
- C. Noise
- D. Sulphur dioxide
When a Spirogyra cell is immersed in a salt solution more concentrated than its cell sap, it?
- A. remains unchanged
- B. takes tip water and burst
- C. absorbs a little water
- D. loses water and shrivels
Flatworms and roundworms are said to be invertebrates because?
- A. they are small animals
- B. they can live inside the vertebrates
- C. some of them are unicellular
- D. they have no backbones
Choose the sequence which represents the correct order of organisms in a food chain
- A. Grass, snake, toad, grasshopper, hawk
- B. Grass, grasshopper, toad, snake, hawk
- C. Grass, grasshopper, snake, toad, hawk.
- D. Grass, snake, grasshopper, toad, hawk
Some of the features of an animal are scales, teeth, nares, and backbone. The animal is likely to be a?
- A. toad
- B. bird
- C. lizard
- D. rat
Which of the statements below is not characteristic of wind-pollinated flowers?
- A. Stigmas are usually large and feathery
- B. Nectary is usually absent
- C. The pollen grains have rough spiny surfaces
- D. The flowers are not scented.
One of the functions of the xylem is?
- A. strengthening the stem
- B. manufacturing food
- C. reducing loss of water
- D. conducting manufactured food