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
Use the diagram to answer the question.
The structure labelled i is
- A. photosensitive
- B. radiosensitive
- C. chemoreceptive
- D. tactile
Use the diagram to answer the question.
The type of protective adaption exhibited by the animal is
- A. disruptive colouration
- B. flash colouration
- C. countershading colouration
- D. warning colouration
Which of the following vertebrates has the most simple structured heart
- A. reptile
- B. fish
- C. mammal
- D. Amphibian
Which of the following is the best explanation for a child who is phenotypically short and born of two tall parents
- A. both parent possess genes for shortness
- B. the father possess a gene for shortness
- C. nature makes the child short
The only caste in the termite colony whose members can feed themselves are the
- A. workers
- B. reproductives
- C. soldiers
- D. nymphs
When bacteria swim from cold to warm regions, this is known as
- A. positive phototaxis
- B. negative phototaxis
- C. positive thermotaxis
- D. negative chemotaxis
Use the table to answer the question.
Which of the zones is likely to be a desert?
- A. i
- B. ii
- C. iii
- D. iv
Use the table below to answer the question.
High relative humidity will be expected in Zones
- A. ii and iv
- B. ii and iii
- C. i and iii
- D. i and iv
Paternity disputes can most accurately be resolved through the use of
- A. blood group typing
- B. finger printing
- C. tongue rolling
- D. DNA Analysis
The noticeable adaptation of the animal to it’s aquatic habitat is the possession of
- A. webbed digits
- B. four limb
- C. wide mouth
- D. large eyes
Use the diagram to answer the question.
The process of water loss and intake indicated by the arrows labelled i and ii are respectively
- A. evaporation and osmosis
- B. osmosis and exhalation
- C. osmosis and diffusion
- D. urination and diffusion
In a population of living things, the parameters of size, height, weight and colours are examples of
- A. continuous variation
- B. non-heritable variation
- C. discontinuous variation
- D. physiological variation
Both recesssive and dominant characters are found
- A. on different chromosome in the cell
- B. at the same logus of a homologous chromosome
- C. at a different loci of a homologous chromosome
- D. on the same chromatid in a chromosome
The probability of a baby being a boy or a girl depends on the contribution of the
- A. father's sex cells
- B. father's stomatic chromosome
- C. mother's sex cell
- D. mother's X-chromosome