Which of the following structure is not an organ of the digestive system

• Oesophagus

• pancreas

• stomach

• kidney

The part of the alimentary system of a bird where grinding of maize occurs is the

• crop

• stomach

• gizzard

• cloaca

Which of the following blood vessels have valves

• Capillary

• artery

• arteriole

• vein

Which of the following is features is not characteristic of artories?

• Possess valves of interval

• throughout their length

• have thick, muscular and elastic walls

• transport oxygenated blood with the exception of the pulmonary artery.

The following processes are involved in water movement in the endodermis except

• Osmosis

• vacuolar pathway

• diffusion

• active transport

The science of life is referred to as ____

• Anatomy

• biology

• ecology

• phylogeny

A change in the environment of an organism is termed

• Sensitivity

• impulse

• Response

• stimulus

The branch of biology that deals with the principles of classification is known as

• Biological index

• nomenclature

• taxonomy

• ecology

The scientist who introduced binomial nomenclature in the classification of organisms was

• Charles Darwin

• Carolus Linnaeus

• John Ray

• Louis Pasteur

In the binomial system, the second name is called the

• Scientific name

• common name

• Generic name

• specific name