The autonomic nervous system comprises

A. sympathetic and parasympathetic systems

B. cranial and sacral nerves

C. brain and cranial nerves

D. spinal cord and spinal nerves

E. brain and spinal nerves

The scientist who discovered the honey-comb structure of the cell was

A. Robert Hooke

B. Felix Dujardin

C. Mathias Schleiden

D. Theodore Schowann

E. Louis Pasteur

Which of the following organelles are likely to be present in cells that are actively respiring and
hotosynthesizing?

A. Nucleoli and centrioles

B. Lysosomers and ribosomes

C. Endoplasmic reticulum and Golgi bodies

D. Chloroplasts and mitochondria

E. Food vacuoles and contractile vacuoles

Which of the following is not true about a bacterial colony growing on an agar plate?

A. They are visible without the aid of the microscope

B. Bacterial cells found in one colony often belong to one species

C. Different colonies have different colours

D. Only one species of bacterial colony can grow on a culture at any time

E. Colonies growing on an agar plate under the same conditions must belong to one species

The theory that new organs or characteristics develop in organisms when there is a need for them was
postulated by

A. Charles Darwin

B. Jean Lamarck

C. Gregor Mendel

D. Wallace

E. Louis Pasteur

Which of the following is an example of reproductive adaptation?

A. Succulent stems of cactus plant

B. Changing colour of chameleon

C. Possession of spines by desert plants

D. Neck colouration in Agama lizard

E. Leaf-shedding in trees

The large intercellular air spaces which penetrate the tissues of most hyrophytes provide a pathway through
which

A. carbondioxide absorbed by leaves can diffuse to the roots

B. oxygen produced in the leaves can diffuse to the submerged parts

C. salts absorbed by roots can reach other parts of the plant

D. plant hormones are transported to various parts

E. manufactured food is translocated

Which of the following processes will not introduce carbondioxide into the atmosphere?

A. Breathing

B. Photosynthesis

C. Respiration

D. Putrefaction

E. Burning