A pancreatic disorder reduces insulin production. The immediate physiological risk is:
Correct Answer: A. Elevated blood glucose
MCQ Collection
Animal Form and Function-I MCQs
Practice Animal Form and Function-I questions with answers and explanations.
A hormone receptor is located in the nucleus. The hormone most likely belongs to the:
Correct Answer: A. Steroid or thyroid hormone group
A reptile heart usually has incomplete ventricular separation, except in crocodilians. This means most reptiles have:
Correct Answer: A. Partial separation of blood in the ventricle
A female mammal shows uterine contractions during birth. The hormone commonly involved is:
Correct Answer: A. Oxytocin
A hormone is released when blood osmolarity rises. The response promotes water conservation. This describes:
Correct Answer: A. ADH regulation
An animal changes its reproductive activity seasonally. Endocrine control may be influenced by:
Correct Answer: A. Day length and melatonin pathways
A student measures blood pressure and finds it highest in arteries near the heart. This is because arteries:
Correct Answer: A. Receive blood under high pressure from ventricles
Milk production after birth is promoted mainly by:
Correct Answer: A. Prolactin
A student sees endocrine control of reproduction in birds and mammals. Gonadal hormones mainly include:
Correct Answer: A. Estrogens, progesterone, and testosterone
A zoology student connects endocrine and immune systems. Stress hormones can affect immunity because they:
Correct Answer: A. Modify activity of immune cells
Veins often contain valves. These valves mainly:
Correct Answer: A. Prevent backflow of blood
A hormone that synchronizes daily rhythms with light-dark cycles is:
Correct Answer: A. Melatonin