The blood vessel that supplies blood rich in digested food to the liver is the

A. Hepatic artery

B. Hepatic portal artery

C. Hepatic portal vein

D. Hepatic vein

E. Renal artery

The cell organelle, from which spindle fibers originate during cell division in animal cells is known as

A. Centrosome

B. Chromosome

C. Leucoplast

D. Lysosome

E. Ribosome

Which part of the brain regulates and co-ordinates muscular movements?

A. Cerebellum

B. Cerebrum

C. Hypothalamus

D. Medulla oblongata

E. ThaIamus

Bacteria; which derive energy by oxidizing certain inorganic compounds, are said to be

A. Chemosynthetic

B. Holozoic

C. Parasitic

D. Photosynthetic

E. Saprophytic

Which is the most ecologically viable method of insect pest control?

A. Draining all stagnant pools of water

B. Eliminating one of the development stages of the insect

C. Employing a lot of labourers to physically handpick the insect pests

D. Erecting physical barriers against insect pests

E. Using stronger insecticides which can kill a greater number of insect.

Which is NOT an effect of the food shortage on a population?

A. Cannibalism

B. Competition

C. Increase in mortality

D. Increase in natality

E. migration

Which pollutant is likely to cause cholera?

A. agricultural wastes

B. industrial wastes

C. nuclear fallouts

D. oil spillages

E. untreated sewage

The gradient of land can be measured with an instrument called a/an

A. Aneroid barometer

B. Hygrometer

C. Metre rule

D. Secchi disc

E. Slope gauge

What is NOT a reflex action?

A. Blinking of an eye

B. Jerking of the knee

C. Leaning

D. Salivating

E. Sneezing

What is NOT a kidney disease?

A. Cirrhosis

B. Kidney stones

C. Nephritis

D. Uraemia

E. Wilm’s tumour