Choose the wrong statement

• Teeth in Chondrichthyes are modified ctenoid scales

• Air bladder in fishes regulates buoyancy

• In amphibians, the tympanum represents the ear

• Long bones in birds are pneumatic

• Long bones in birds are pneumatic

Identify the correct statement regarding urine formation

• Counter current mechanism works around the glomerulus and PCT

• To prevent diuresis, ADH facilitates water reabsorption
  from the latter parts of the tubule

• Maximum absorption of electrolytes occurs in the Henle's loop

• A decrease in blood pressure can increase the glomerular filtration rate

• A decrease in blood pressure can increase the glomerular filtration rate

Functional systems for specific physiological functions are not seen in

• Annelids

• Molluscs

• Arthropods

• Echinoderms

• Echinoderms

The yellowish pigmented spot at the posterior pole of the human eye lateral to the blind spot is

• crista

• saccule

• iris

• meatus

• meatus

In cockroach, the arthrodial membrane

• forms the hind wings

• covers the compound eyes

• forms the hypopharynx

• forms the tegmina

• forms the tegmina

Match Column I with Column II and choose the correct answer

• i - C; ii - D; iii - A; iv - B; v - E

• i - D; ii - E; iii - B; iv - C; v - A

• i - D; ii - A; iii - B; iv - E; v - C

• i - A; ii - B; iii - C; iv - D; v - E

• i - A; ii - B; iii - C; iv - D; v - E

Which one of the following is not a sensory structure in cockroach?

• Antennae

• Eyes

• Anal cerci

• Maxillary palps

• Maxillary palps

Choose the wrongly matched pair regarding the position of
reproductive structures in earthworm

• Testes - 10^th and 11^th segments

• Spermathecae - 6^th to 9^th segments

• Male genital pore - 9^th segment

• Ovaries - Inter segmental septum of 12^th and 13^th segments

• Ovaries - Inter segmental septum of 12^th and 13^th segments

Identify the correct statement regarding cardiac activity

• Normal activities of the human heart is regulated intrinsically hence it is neurogenic

• A special neural centre in the medulla oblongata can moderate the cardiac function through the CNS

• Parasympathetic neural signals increase the rate of heart beat

• Adrenal medullary hormones can increase cardiac output

• Adrenal medullary hormones can increase cardiac output

Which of the following statement/s regarding coelenterates is/ are wrong?

I. Cnidocytes are present on the tentacles and on the body

II. Diploblastic with cellular level of organization

III. Polyp forms are free swimming

IV. Exhibits metagenesis

V. Polyps produce medusae sexually and medusae form polyps asexually

• II and IV only

• III and V only

• I, II and III only

• III only

• III only