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The enzyme enterkinase helps in conversion of:
Option: 1 protein into polypeptide
Option: 2 trypsinogen into trypsin 
Option: 3 caeinogen into casein
Option: 4 pepsinogen into pepsin  

The enzyme enterokinase helps in the conversion of trypsinogen into trypsin. The enzyme trypsin further helps in the breakdown of proteins for the process of digestion.

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Ritika Jonwal

The process responsible for facililating loss of water in liquid form from the tip of grass blades at night and early morning is:
Option: 1 Transpiration
Option: 2 Root pressure
Option: 3 Inhibition
Option: 4 Plasmolysis  

 Effects of root pressure is observable at night and early morning when evaporation is low, and excess water collects in the form of droplets around special openings of veins near the tip of grass blades, and leaves of many herbaceous parts. Such water loss in its liquid phase is known as guttation.

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Ritika Jonwal

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Goblet cells of the alimentary canal are modified from:
Option: 1 Squamous epithelial cells
Option: 2 Columnar epithelial cells
Option: 3 Chondrocytes
Option: 4 Compound epithelial cells  

Goblet cells of the alimentary canal are modified from columnar epithelial cells. 

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Select the correct statement.
Option: 1 Glucocorticoids stimulate gluconecgenesis
Option: 2 Glucogon is associted with hypoglycemia
Option: 3 Insulin acts on pancreatic cells and adipocytes
Option: 4 Insulin is associated with hyperglycemia  

Glucocorticoids are steroid hormones that promote gluconeogenesis in the liver. 

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Match the following columns and select the correct option,         

  Column -I                        Column -II '

(a) Pituitary gland                (i) Grave's disease

 (b) Thyroid gland                 (ii) Diabetes mellitus  

(c) Adrenal gland                 (iii) Diabetes insipidus

 (d)  Pancreases                  (iv) Addison's disesase
 

Option: 1 (a)         (b)        (c)         (d)
                (iv)         (iii)       (i)          (ii)
 Option: 2 (a)         (b)        (c)         (d)
               (iii)         (ii)        (i)          (iv)
Option: 3 (a)         (b)        (c)         (d)
                (iii)         (i)        (iv)         (ii)  
Option: 4 (a)         (b)        (c)         (d)
                  (ii)         (i)       (iv)         (iii)

The correct match is:

Pituitary gland - Diabetes insipidus

Thyroid gland - Graves disease

Adrenal gland - Addison’s disease

Pancreas - Diabetes mellitus

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Ritika Jonwal

The product (s) of reaction catalyzed by nitrogenase  in root nodules of leguminous plants is /are :
Option: 1 Ammonia alone
Option: 2 Nitrate alone
Option: 3 Ammonia and oxygen
Option: 4 Ammonia and hydrogen  

Nitrogenase converts nitrogen into ammonia. Hence, the correct option is (a).

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Secondary metabolites such as nocotine, strychnine and caffein are produced by plants for their :
Option: 1 Nutritive value
Option: 2 Growth response
Option: 3 Defence action
Option: 4 Effect on reproduction

 

Secondary metabolites in plants help in defense action. 

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Which of the following is not an inhibitory substance governing seed dormancy?
Option: 1 Gibberellic acid
Option: 2 Abscisic acid
Option: 3 Phenolic acid
Option: 4 Para-ascorbic acid  

 Gibberellic acid is not an inhibitory substance governing seed dormancy.

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Which of the following would help in the prevention of diuresis?
Option: 1 More water reabsorption due to underreaction of ADH
Option: 2 Reabsorption of Na and water from renal tubules to aldosterone
Option: 3  Atrial natriuretic factor causes vasoconstriction  
Option: 4 Decreases in secretion renin by JG cells

More water reabsorption due to underreaction of ADH would help in the prevention of diuresis.

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Identify the correct statement with reference to the human digestive system.  
Option: 1 The ileum opens into the small intestine.
 
Option: 2 Serosn is the innermost layer of the alimentary canal.
 
Option: 3 The ileum is a highly coiled part.
 
Option: 4 The vermiform appendix arises from the duodenum.

The ileum is a highly coiled part, so this is the correct statement.

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