The most effective method of dealing with non-biodegradable pollutant is by

• A. Dumping
• B. Recycling
• C. Incineration
• D. Burying

A yellow maize is crossed with a white maize and the first filial generation produce yellow maize only. The white trait is said to exhibit

• A. dominance
• B. recessiveness
• C. codominance
• D. incomplete dominance

The ascent of water in tall trees is mainly due to

• A. adhesive forces
• B. transpiration pull
• C. root pressure
• D. cohesive forces

The following animals are viviparous expect

• A. Cow
• B. Dog
• C. Goat
• D. Pigeon

The main similarity between unicellular and multicellular organisms is that both

• A. perform all life activities
• B. exist as filaments
• C. are plants
• D. exist as colonies

A dilute solution of phenylthiocarbamide tastes bitter to some people and is tasteless to others. This is an example of?

• A. taste bud variation
• B. discontinuous variation
• C. morphological variation
• D. continuous variation

The major site of photosynthesis in the leaf is the

• A. palisade parenchyma
• B. mesophyll parenchyma
• C. upper epidermis
• D. lower epidermis

The part of the ear that is concerned with balance is the

• A. semi-circular canals
• B. incus
• C. malleus
• D. Eustachian tube

The average number of individuals of a species per unit area of the habitat is the?

• A. population density
• B. population frequency
• C. population size
• D. population distribution

Which of the following substances when lost from the body of a mammal will not be returned to the ecosystem?

• A. Sweat
• B. Urea
• C. Heat energy
• D. Carbon dioxide