A student identifies a cell as prokaryotic. Which of the following could NOT be a characteristic of the cell?

• A. The ability to carry out photosynthesis
• B. Ribosomes
• C. A cell wall
• D. A true nucleus

In an experiment to determine the percentage of air in a soil sample, the following readings were recorded:

volume of water in measuring cylinder = 500 cm^3

volume of soil added to water = 350 cm^3

volume of water and soil after stirring = 800 cm^3

the percentage of air in the soil sample is

• A. 6.25%
• B. 10.36%
• C. 14.28%
• D. 43.28%

Which vitamin plays an important role in blood clotting?

• A. vitamin A
• B. Vitamin K
• C. Vitamin B12
• D. Vitamin C

Which of the following is a feature of wind pollinated flowers?

• A. Large and brightly coloured petals
• B. Possession of sweet scent
• C. Presence of nectar
• D. Smooth, light and numerous pollen grains

Viviparity occurs mainly in the

• A. mammals
• B. reptiles
• C. aves
• D. amphibians

The hormone that promotes secondary sexual characteristics in females is

• A. insulin
• B. thyroxin
• C. testosterone
• D. oestrogen

The conclusion drawn from the experiment in the diagram below is that

• A. shoots of plants are negatively thigmotropic
• B. shoots of plants are negatively geotropic
• C. shoots of plants are positively phototropic
• D. roots of plants are positively hydrotropic

A sick baby was successfully transfused with blood from the father who has blood group AB.

What is the group of the the sick baby?

• A. A
• B. B
• C. AB
• D. O

The testes in male mammals descend into the scrotal sac because

• A. there is congestion in the lower abdomen
• B. they run the risk of being destroyed
• C. they need special support
• D. they require a relatively low temperature

At which of the following stages of mitosis do the two daughter chromosomes separate completely?

• A) early prophase
• B) telophase
• C) Anaphase
• D) late prophase