Biology Times March 19
ZOOLOGY
- Mammals have originated from which of the
following?
(a) Aves (b) Amphibia
(c) Reptilia (d) Pisces
- Air bladder is present in
(a) Rays (b) Starfish
(c) Shark (d) Gold fish
- Scientific name of king cobra is
(a) Bungarus coerulus
(b) Naja naja
(c) Naja Hannah
(d) Vipera russelli
- Which of the following statement is correct about
frog?
(i) During aestivation and hibernation gaseous
exchange takes place through skin
(ii) In frog, cutaneous and pulmonary respiration
are found
(iii) A pair of elongated pink hollow lungs are
found in thorax.
(a) i and ii (b) ii and iii
(c) i , ii and iii (d) i and iii
- In the nodules of roots in leguminous plants, we
find
(a) N 2 producing bacteria
(b) denitrifying bacteria
(c) N 2 fixing bacteria
(d) Ammonifying bacteria
- Dental formula is given to show:
(a) Structure of molars
(b) Homodont condition
(c) Diphyodont condition
(d) Number and types of teeth in both jaws
- Peyer’s patches are groups of:
(a) Veins (b) Arteries
(c) Lymph nodes (d) All of these
- The back flow of faecal matter in the large intestine
is prevented by the presence of:
(a) Ileocaecal valve
(b) Pyloric sphincter
(c) Sphincter of oddi
(d) Gastro-oesophageal sphincter
- The afferent (sensory) endings for the
Hering-Breuer reflex are stretch receptors
(mechanoreceptors) in the
(a) aorta and carotid arteries
(b) arteries in the cerebral circulation
(c) lungs
(d) heart
- The blood circulation which starts and ends into
capillaries is :
(a) Portal circulation
(b) Renal circulation
(c) Hepatic circulation
(d) Lymphatic circulation
- Which of the following is the correct pathway for
propagation of cardiac impulse?
(a) SA node →AV node →Bundle of His
→Purkinje fibres
(b) AV node →Bundle of His →SA node
→Purkinje fibres
(c) SA node →Purkinje fibres →AV node →
Bundle of His
(d) Purkinje fibres →AV node →SA node
→Bundle of His
- Figure shows human urinary system with structure
labelled A to D. Select option, which correctly
identifies them and gives their characteristics and
/ of functions.
