BIOLOGY

Substance which is finally excreted in the urine (a)  Amino acid                        (b)  Urea (c)   Glucose & Glycogen          (d)  Uric acid...

(a)      ADH                                    (b) ...

ANSWERS: (a)  Muscle fibres located in heart (b)  Nerve fibres located in cerebrum (c)   Connective tissue fibres joining one bone...

ANSWERS: (a)  Pulmonary vein                  (b)  Pulmonary artery (c)   Renal vein                         (d)  Hepatic...

ANSWERS:(a)  Initiation of heart beat (b)  Regulation of heart beat (c)   Release of acetylcholine only (d)  Release of adrenalin only...

Dental formula of rabbit is (a)       1023/1023                       ...

ANSWERS: (a) Sinu-auricular node           (b)  Atrio-ventricular node (c)   Sodium ion                        (d)  Purkinje’s fibres EXPLANATION: (a) (6)

In mammals the lower jaw is made up of (a)       Dentery                                          (b)   Maxilla (c)       Premaxilla       ...

ANSWERS: (a) The defective and leaking valve (b)  The thrombosis in coronary artery (c)   Defect in SA node (d)  The...

ANSWERS (a) Pushing of venous valves (b)  Suction pull (c)   Beating of S.A. node (d)  Pressure between post caval and...

ANSWERS: (a)   Arteries are contracting during systole (b)  Blood is pumped with a pressure in the arteries by the heart...

ANSWERS:(a)   Cholinergic            (b)  Adrenergic ( C) Neurogenic            (d)  Myogenic EXPLANATION:(d)          Myogenic heart has contraction initiated...

ANSWERS: (a)      Membranous                 (b)  Muscular (c)     Tendinous           ...

ANSWERS: (a)    60-70 times                    (b)  70-80 times (c)   80-90 times                      ...

ANSWERS:(a)  Hiss                    (b)     Loewis (c)   Ringer         ...

ANSWERS: (a)   Left auricle and left ventricle (b)  Post caval and right caval (c)   Right auricle and left auricle (d) ...

ANSWER :(a) Heart beat will increase     (b)  Heart beat will decrease (c)   Heart beat will stop          (d)  No effect...

ANSWERS:(a)  ‘Lubb’ sound at the end of systole (b)  ‘Dub’ sound at the end of systole (c)   ‘Lubb’ sound at...

ANSWERS: (a)   Lymph node                          (b)  Atrio-ventricular node (c)  ...

ANSWERS: (a)      The two ventricles together in humans (b)  The heart that contracts under stimulation from nervous system (c)   Left...

answers:(a)      RBC per ml of blood (b)  Haemoglobin per ml of blood (c)   Oxygen per ml of blood (d)  Nutrient...

ANSWERS: (a)  Germany                            (b)  Italy (c)   Australia                            (d)  Austria EXPLANATION:(b)          The composite structure of Bowman’s capsule and glomerulus in knows...

ANSWERS: (a)  Sweat glands (b)  Sebaceous glands (c)   Hair follicles (d)  Hair cells EXPLANATION:(a) (15)

ANSWERS: (a)   Deamination                  (b)  Entropy (c)   Anuria                               (d)  None of these EXPLANATION:(c)     ...

ANSWERS: (a)      Malpighian capsule        (b)  Bowman’s capsule (c)   Glomerulus                        (d)  Collecting tubule EXPLANATION: (a) Filtration takes place...

ANSWERS: (a)      Tea                                  (b)           ...

ANSWERS: (a)   Urates, glucose and water only (b)  Ammonia, urea, uric acid and proteins (c)   Urea, sugar, water and ammonia...

ANSWERS: (a)      Aldosterone hormone (b)  Antidiuretic hormone (c)   Parathormone (d)  All the above EXPLANATION: (a)   (15)

ANSWERS : (a)      The capillaries of the glomeruli have many more pores than other capillaries (b)  Endothelial cells lining the...

(a)  On the organ of corti (b)  On the Reissner’s membrane (c)   In the sacculus (d)  In the semicircular canal...

(a)      Ampulla                                     (b)  Sacculus (c)   Utriculus                           ...

  (a)  Malleus                              (b)  Utriculus (c)   Eustachian tubes              (d)  Semicircular canal EXPLANATION:D (11)

Our ear can hear the frequency of sound waves   (a)  20 to 20,000 cycles/sec   (b)  1000 to 2000 cycles/sec...

            The biomass can be used to [CBSE PMT 1992] (a)   Obtain alcohol                   (b)   Generate...

A phenomenon is termed parthenogenesis when                                                                                                 [CBSE PMT 1990]              (a)   Artificial fertilization occurs              (b)   Egg is fertilized...

          Reproduction and its type Which are exclusively viviparous                          [AFMC 1986]              (a)   Bony fishes                          ...

“Sertoli cells” in human testis are found in [CPMT 1980, 83, 94,99; DPMT 1986; AFMC 2002]              (a)   Seminiferous tubules...

Penetration of sperm is a chemical mechanism. In this acrosome of sperm undergoes acrosomal reaction and releases certain sperm lysins...