Excretion in Plants and Animals
Excretion in Plants and Animals
Questions
Question 1 Multiple Choice (Single Answer)
Public urinals give a pungent smell due to the conversion of
- both urea and uric acid into ammonia
- uric acid into ammonia by ornithine cycle
- urea into ammonia by bacteria
- None of these
Question 2 Multiple Choice (Single Answer)
The chief nitrogenous waste in the urine of a man or terrestrial mammals is
- urea
- uric acid
- ammonia
- none of the above
Question 3 Multiple Choice (Single Answer)
The urine of a man suffering from diabetes insipidus is
- sweet and watery
- sweet and thick
- tasteless and watery
- tasteless and thick
Question 4 Multiple Choice (Single Answer)
Under which of the following conditions the production of urine per day increases?
- On a cold damp day
- On continuous exercise
- On a very warm and dry day
- None of the above
Question 5 Multiple Choice (Single Answer)
Urea is formed by the combination of ammonia and _______ in _______.
- oxygen, liver
- carbon dioxide, liver
- carbon monoxide, kidney
- calcium carbonate, liver
Question 6 Multiple Choice (Single Answer)
In insects, uric acid is temporarily stored in
- liver
- lungs
- fat bodies
- cloaca
Question 7 Multiple Choice (Single Answer)
Which of the following is a process in which water is lost in the form of water vapours in plants?
- Respiration
- Guttation
- Exosmosis
- Transpiration
Question 8 Multiple Choice (Single Answer)
Which of the following is not a function of transpiration?
- Translocation of minerals
- Excretion of sap
- Ascent of sap
- Cooling
Question 9 Multiple Choice (Single Answer)
Water is not reabsorbed in
- proximal convoluted tubule
- descending limb of loop of Henle
- ascending limb of loop of Henle
- distal convoluted tubule
Question 10 Multiple Choice (Single Answer)
From which part of a plant does the maximum loss of water through transpiration take place?
- Lenticle
- Cuticle
- Stomata
- Rhizoid