A mammal identifies food by aroma before tasting it. The primary receptor type is:
Correct Answer: A. Olfactory chemoreceptor
MCQ Collection
Animal Form and Function-I MCQs
Practice Animal Form and Function-I questions with answers and explanations.
A student cannot maintain balance after inner ear damage. The affected sensory function is:
Correct Answer: A. Equilibrium detection
A student compares invertebrate and vertebrate nervous systems. Cephalopods are notable among invertebrates because they have:
Correct Answer: A. Highly developed nervous systems and complex behavior
A hormone is present in blood but only liver cells respond. This happens because liver cells have:
Correct Answer: A. Specific receptors for that hormone
A hormone has no effect after its receptor is mutated. The best explanation is:
Correct Answer: A. Target cells cannot recognize the hormone
A student compares taste and smell. Both are similar because they depend on:
Correct Answer: A. Chemical detection
A receptor that detects muscle stretch during movement is important for:
Correct Answer: A. Coordination and posture
A simple animal responds to touch over the whole body but lacks a clear brain. This is most consistent with:
Correct Answer: A. Diffuse nerve net organization
A gland secretes hormone directly into the bloodstream without a duct. This gland is:
Correct Answer: A. Endocrine gland
A student injects a hormone into blood and sees a slow but sustained effect. This time course is typical of:
Correct Answer: A. Endocrine signaling
A cat lands on its feet after falling. Body position awareness depends strongly on:
Correct Answer: A. Proprioceptors
A vertebrate sensory pathway carries signals from receptor to spinal cord and brain. The neurons carrying signals inward are:
Correct Answer: A. Sensory neurons