A zoology student asks why sensory organs are often connected to nervous tissue. The reason is that sensory information must be:
Correct Answer: A. Converted and transmitted for processing
MCQ Collection
Animal Form and Function-I MCQs
Practice Animal Form and Function-I questions with answers and explanations.
A blood glucose level rises after a meal. In vertebrates, the hormone most directly responsible for lowering it is:
Correct Answer: A. Insulin
A crustacean changes color in response to background. Hormonal control may involve:
Correct Answer: A. Pigment-dispersing or concentrating hormones
A student observes that receptors have thresholds. This means a stimulus must:
Correct Answer: A. Reach sufficient intensity to trigger a response
A neuron with many dendrites is well suited for:
Correct Answer: A. Receiving signals from many other cells
During fasting, blood glucose begins to fall. The hormone that helps raise it by mobilizing stored fuel is:
Correct Answer: A. Glucagon
A mollusc reproductive cycle is influenced by environmental cues and internal secretions. This illustrates that invertebrates also possess:
Correct Answer: A. Endocrine-like chemical regulation
A frog turns its head toward a sound. The sensory system involved uses:
Correct Answer: A. Mechanoreceptors responding to vibrations
When sensory receptors stop responding strongly to a constant odor, the process is called:
Correct Answer: A. Adaptation
A fast-conducting vertebrate axon often has nodes of Ranvier. Their role is to:
Correct Answer: A. Allow impulses to jump between gaps in myelin
A student compares nervous and endocrine coordination. Endocrine messages are carried mainly by:
Correct Answer: A. Blood or body fluids
A nematode developmental stage changes in response to internal chemical signals. This is an example of:
Correct Answer: A. Hormonal regulation of development