Reading the verdict of a case by a judge or magistrate is an example of

• A. a reflex action
• B. an instinct
• C. a conditioned reflex
• D. a voluntary action

Which of the following is not a constituent of blood plasma?

• A. Proteins
• B. Mineral salts
• C. Water
• D. Platelets

Which of the following practices is not used in conserving water?

• A. Afforestation
• B. Damming
• C. Deforestation
• D. Reforestation

The exchange of genes between homologous chromosomes is called

• A. crossing over
• B. back cross
• C. test cross
• D. mutation

Which of the following associations can upset the balance of nature?

• A. Epiphitism
• B. Parasitism
• C. Symbiosis
• D. Saprophytism

The major cause of global warning is the

• A. burning of fossil fuel
• B. construction of dams
• C. use of electricity
• D. exploration of space

Which of the following glands secretes a substance into the blood stream of a frightened person?

• A. Adrenal glands
• B. Salivary glands
• C. Gastric glands
• D. Parathyroid glands

The curvature movement of plants in response to the stimulus of water is called

• A. hydrotropism
• B. geotropism
• C. Phototropism
• D. thigmotropism

In the earthworm, the cocoon is secreted by the

• A. chaeta
• B. prostomium
• C. peristomium
• D. citellum

The bacterium in a mutualistic association with legumes converts

• A. nitrates to ammonia
• B. ammonium compounds to nitrites
• C. nitrogen gas to ammonia
• D. nitrites to nitrates