[OBJECTIVE]
Subject: Zoology-IV (Physiology)
Time Allowed: 10 Minutes
Maximum Marks: 10
NOTE: Attempt this Paper on this Question Sheet only. Please encircle the correct option. Division of marks is given in front of each question. This Paper will be collected back after expiry of time limit mentioned above.
Part-I Encircle the correct option, cutting and overwriting is not allowed. (10)
1. When a threshold stimulus is applied to a neuron. it becomes:
a) Polarized
b) Hyperpolarized
c) Repolarized
d) Depolarized
2. Their number is directly related to the number of segments in the trunk and tail of a vertebrate
a) Sensory nerves
b) Cranial nerves
c) Spinal nerves
d) Ganglia
3. These are the simplest vertebrate receptors:
a) Georeceptors
b) Proprioceptors
c) Phonoreceptors
d) Thermoreceptors
4. The long. coiled. sensory structure of the mammalian inner ear that contains receptors for sound:
a) Cochlea
b) Semicircular canal
c) Tympanum
d) External auditory meatus
5. In polychaetes, the hormone that inhibits the gonads and stimulates growth and regeneration:
a) Molt inhibiting hormone
b) Gonadotrophin
c) Juvenile hormone
d) Ecdysone
6. The hormone that mobilizes glucose. increases heart rate and oxygen consumption:
a) Parathyroid hormone
b) Thyroxin
c) Epinephrine
d) Calcitonin
7. In mammals, the hormone that initiates anti-inflammatory and antiallergic actions
a) Cortisol
b) Epinephrine
c) Aldosterone
d) Glucagon
8. The respiratory pigment that contains metallic copper and has a bluish color when oxygenated:
a) Hemoglobin
b) Hemocynain
c) Hemerythrin
d) Chlorocruorin
9. The cellular components that contain RNA and protein
a) Mitochondria
b) Vacuoles
c) Ribosomes
d) Vesicles
10. The structures that contain enzymes called acid hydrolases
a) Ribosomes
b) Peroxisomes
c) Mitochondria
d) Lysosomes
[SUBJECTIVE]
Subject: Zoology-IV (Physiology)
Time Allowed: 2 Hours 45 Minutes
Maximum Marks: 50
NOTE: ATTEMPT THIS (SUBJECTIVA) ON THE SEPARATE ANSWER SHEET PROVIDED.
Part-II Give short details of each of them, each answer carries equal marks. (20)
Q#1: Give the location and role of pineal gland.
Q#2: Describe the endocrine system of molluscs
Q#3: What do you know about hearing and equilibrium in water?
Q#4: Describe the endocrine system of annelids.
Q#5: Compare the structure and function of mitochondria and chloroplast.
Q#6: Discuss the structure and function of lysosomes.
Q#7: Discuss the gas exchange portion of human respiratory system.
Q#8: Briefly describe hemoglobin as a respiratory pigment.
Q#9: Compare continuous versus discontinuous feeders.
Q#10: Describe, briefly. the role of small intestine in digestion.
Part-III Give brief answers, each answer carries equal marks. (30)
Q#1: Give an account of the structure and function of Cytoskeleton.
Q#2: Give a brief account of the mechanism involved in changing the resting membrane potential across the plasma membrane into the action potential.
Q#3: Compare the structure and function of vertebrate blood vessels.
