The pigment in the malphigian layer responsible for skin colouration is known as

A. haemoglobin

B. haemocyanin

C. chlorocruorin

D. haemoerythrin

E. melanin

Co-ordination is achieved in the body of mammals through the action of the

A. endocrine and nervous systems

B. skeletal and nervous systems

C. muscular and nervous systems

D. circulatory and nervous systems

E. skeletal, muscular and nervous system

Which of the following statements is correct of hormones? Hormones are

A. secreted into the blood through ducts

B. secreted directly into the blood streem

C. inactive chemical substance in the blood stream

D. non-specific in their mode of action

E. secreted at the site of the needed organ

The pituitary is called 'master gland' because

A. it is locatd in the brain

B. its secretion are the more numerous than those of the other gland

C. its secretion controls the other glands

D. it is the only organ that produces hormone

E. it regulates muscular movements

Auxins are produced in the

A. petiole of leaves

B. parenchyma of roots and shoots

C. epidermis of roots and shoots

D. apical regions of roots and shoots

E. sclerenchyma tissues of roots and shoots

The brain and the spinal cord make up the

A. pheripheral nervous system

B. automatic nervous system

C. central nervous system

D. somatic nervous system

E. sympathetic nervous system

Which of the following specialized structures are stimulated by touch, pressure, pain, heat and cold?

A. Receptors

B. Synapse

C. Cell bodies

D. Myelin sheath

E. Relay neurones

Which of the following is not correct about a fruit? lt

A. may contain many seeds

B. is a mature ovary

C. is covered by the pericarp

D. may develop from the receptacle

E. possesses only one scar.

Which structure in the maize grain stores food?

A. Radicle

B. Embryo

C. Cytoplasm

D. Seed coat

E. Endosperm.

Which of the following does not occur during photosynthesis?

A. Energy from sunlight is absorbed

B. Carbondioxide is evolved

C. Glucose is synthesized

D. Oxygen is given

E. water is split