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
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
The yellowish pigmented spot at the posterior pole of the human eye lateral to the blind spot is
crista
saccule
iris
meatus
meatus
E.
macula lutea
Macula lutea is a yellow oval spot at the center of the retina (back of eye). It is responsible for sharp, detailed central vision. It is also called fovea that contains a high concentration of cones.
Functional systems for specific physiological functions are not seen in
Annelids
Molluscs
Arthropods
Echinoderms
Echinoderms
Match Column I with Column II and choose the correct answer
Column I | Column II |
i. Incomplete digestive system | A. Sponges |
ii. Cellular level of organization | B. Coelenterates |
iii. Radial symmetry | C. Annelids |
iv. Pseudocoelomate | D. Platyhelminthes |
v. Metamerism | E. Aschelminthes |
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 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
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
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 - 10th and 11th segments
Spermathecae - 6th to 9th segments
Male genital pore - 9th segment
Ovaries - Inter segmental septum of 12th and 13th segments
Ovaries - Inter segmental septum of 12th and 13th segments
In cockroach, the arthrodial membrane
forms the hind wings
covers the compound eyes
forms the hypopharynx
forms the tegmina
forms the tegmina