Mammalian Hormones (Cambridge (CIE) O Level Biology): Exam Questions

The endocrine system in mammals produces hormones.

Define the term hormone.

The responses of the human body to danger are coordinated by the nervous and endocrine systems.

Fig. 1 shows the sequence of events that occurs in response to a dangerous situation that is detected by the eyes.

Fig. 1

(i) State the tissue in the eye that converts light energy into nerve impulses.

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(ii) State the part of the eye that has the highest concentration of light-sensitive cells and gives the most detailed image.

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(iii) State the type of neurone that conducts impulses from the eye to the brain.

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(iv) State the nerve that contains these neurones that conduct impulses from the eye to the brain.

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(v) Identify the organ labelled P.

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(vi) Identify the gland labelled Q.

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Complete Table 1 to describe the effects of the hormone released when a person is in a dangerous situation.

Table 1

Explain the advantages of coordinating the response to a dangerous situation using both the nervous system and the endocrine system.

Plants also make hormones.

State the name of one hormone made by plants.