Neco Biology 2003 Past Questions and Answers

Question 41:

• NECO 2003

Herbicides are chemicals used to ____________

A. Check the spread of diseases
B. Control dormancy in seeds
C. Control insects
D. Control weeds
E. Control pests

Question 42:

• NECO 2003

The sun rays reach the earth’s surface by ____________

A. Conduction
B. Convection
C. Radiation
D. Reflection
E. Refraction

Question 43:

• NECO 2003

The following are effects of food shortage on population size EXCEPT

A. Competition
B. Decline in reproduction
C. Emigration
D. Increase in natality
E. Mortality

Question 44:

• NECO 2003

Vitamin K deficiency causes ____________

A. Constipation
B. Indigestion
C. Low sperm count
D. Uncontrolled haemorrhage
E. Stomach and duodenal ulcer