What is the role of Charles Darwin in relation to concept of species?

Why elephants and other wild animals are entering into human living area?

What is the difference between a Zoo and Wild Life Sanctuary?

Can we use recent molecular tools to identify and classify organisms?

Observe the animal below and answer the following questions.

a. Identify the animal
b. What type of symmetry does this animal exhibit?
c. Is this animal Cephalized?
d. How many germ layers does this animal have?
e. How many openings does this animal's digestive system have?
f. Does this animal have neurons?

Write the classification of connective tissue and their functions.

How respiration takes place in cockroach?

Draw a neat labelled diagram of the digestive system of frog.

Explain the excretory system of frog.

Label the given diagram.

Sketch a flow chart to show the path way of air flow during respiration.

Describe the mechanism by which the human heart beat is initiated and controlled.

Select the correct biological term.
Cardiac muscle, atria, tricuspid systole, auricles, arteries, diastole, ventricles, bicuspid valve, pulmonary artery, cardiac cycle, semilunar valve, veins, pulmonary vein, capillaries, vena cava, aorta.
(a) The main artery of the blood
(b) Valves between the left atrium and ventricle
(c) Technical name for relaxation of the heart.
(d) Another name for atria.
(e) The main vein.
(f) Vessels which carry blood away from the heart
(g) Two names for the upper chambers of the heart
(h) Thick walled chambers of the heart.
(i) Carries blood from the heart to the lungs
(j) Takes about 0.8 sec to complete.
(k) Valves situated at the point where blood flows out of the heart.
(l) Vessels which carry blood towards the heart
(m) Carries blood from the lungs to the heart.
(n) The two lower chambers of the heart.
(o) Prevent blood from re-entering the ventricles after entering the aorta.
(p) Technical name for one heartbeat.
(q) Valves between right atrium and ventricles.
(r) Technical name for contraction of the heart.
(s) Very narrow blood vessels.

Arrange the following structures in the order that a drop of water entering the nephron would encounter them
e. Afferent arteriole
f. Bowman’s capsule
g. Collecting duct
h. Distal tubule
i. Glomerulus
j. Loop of Henle
k. Proximal tubule
l. Renal pelvis

Identify the biological term
Excretion, glomerulus, urinary bladder, glomerular filtrate, ureters,urine, Bowman’s capsule, urinary system, reabsorption, micturition, osmosis, proteins.
a. A liquid which gathers in the bladder.
b. Produced when blood is filtered in a Bowman’s capsule.
c. Temporary storage of urine.
d. A ball of inter twined capillaries.
e. Removal of unwanted substances from the body.
f. Each contains a glomerulus.
g. Carry urine from the kidneys to the bladder.
h. Scientific term for urination.
i. Regulation of water and dissolved substances in blood and tissue fluid.
j. Consists of the kidneys, ureters and bladder.
k. Removal of useful substances from glomerular filtrate.
l. What solute the blood contains that are not present in the glomerular filtrate?

What is the function of antidiuretic hormone? Where is it produced and what stimuli increases or decreases its secretion?

What is tubular secretion? Name the substances secreted through the renal tubules.

What are the bones that make the pelvic girdle?

Explain the sliding- filament theory of muscle contraction.

The sense of taste is considered to be the most pleasurable of all senses. Describe the structure of the receptor involved with a diagram.

Write the causes for diabetes mellitus and diabetes insipidus.

Name the layers of adrenal cortex and mention their secretions.

Animal husbandry is the science of rearing, feeding and caring, breeding and disease control of animals. It ensures supply of proper nutrition to our growing population through activities like increased production and improvement of animal products like milk, eggs, meat, honey, etc.
a. Poultry production depends upon the photoperiod. Discuss
b. Polyculture of fishes is of great importance. Discuss.

Discuss the various techniques adopted in cattle breeding.

Explain the principle involved in PET scan