Match the items of column I with those of column II: Column I Column II a) Ammonotelism (i) Birds b) Bowman's capsule (ii) Water reabsorption c) Micturition (iii) Bony fish d) Uricotelism (iv) Urinary bladder e) ADH (v) Renal tubule

(a)- (iii) Ammonotelism is the process of excretion of ammonia as an excretory product. Ammonia is highly toxic, so the organism needs plenty of water to make it less toxic. That is why aquatic organisms like bony fishes, octopus excrete ammonia and are called as ammonotelic organism. (b)- (v) Bowman's capsule and renal tubule are the part of nephron of the kidney. (c)- (iv) Micturition is the action of urination where urine is released out from urinary bladder through the urethra. (d)- (i) Uricotelism is the process of excreting uric acid. It is a highly concentrated compound released by organisms who live in water deficit region and the example of these type of organisms are birds. (e)- (ii) ADH is a hormone secreted from posterior pituitary. It helps in reabsorption of water from DCT and CT (collecting tubule) of nephron. Column I Column II a) Ammonotelism (iii) Bony fish b) Bowman's capsule (v) Renal tubule c) Micturition iv) Urinary bladder d) Uricotelism (i) Birds e) ADH (ii) Water reabsorption

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Reptiles, birds, land snails and insects excrete nitrogenous wastes as uric acid in the form of pellet or paste with a minimum loss of water and are called .

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Important Questions on Excretory Products and their Elimination

HARD

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

Which of the animal groups show uricotelism?

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

The major nitrogenous excretory product in mammals is:

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

Nitrogenous waste is excreted in the form of pellet or paste by:

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

The body cells in cockroach discharge their nitrogenous waste in the haemolymph mainly in the form of :

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

Uric acid is the excretory waste of

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

Renal portal system is

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

An advantage of excreting nitrogenous wastes in the form of uric acid is that:

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

A child has a single kidney since birth. This variation is

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

Those animals which excrete a large amount of

N H_{3}

are

MEDIUM

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

Match the items of column I with those of column II:

Column I	Column II
a) Ammonotelism	(i) Birds
b) Bowman's capsule	(ii) Water reabsorption
c) Micturition	(iii) Bony fish
d) Uricotelism	(iv) Urinary bladder
e) ADH	(v) Renal tubule

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

Name the major excretory products. How are these products eliminated from the body?

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

Which one of the following statement is correct with respect to salt water balance inside the body of living organisms ?

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

Osmoregulation in Amoeba takes place by

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

The characteristic that is shared by urea, uric acid and ammonia is/are

I. They are nitrogenous wastes.

II. They all need very large amount of water for excretion.

III. They are all equally toxic.

IV. They are equally present in the kidneys.

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

What is meant by the term osmoregulation?

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Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

The principal nitrogenous excretory compound in humans is synthesized

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

The end product of ornithine cycle is:

MEDIUM

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

How many animals in the list given below are uricotelic animals :-

Periplaneta, Hemidectylus, Columba, Rana, Scoleodon, Terrestrial pila, Apis, Tadpole larva, Corvus, Pteropus

MEDIUM

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

The principal nitrogenous excretory compound in humans is synthesized :

EASY

Biology>Human Physiology>Excretory Products and their Elimination>Excretion in Animals

Effective filtration pressure in glomerulus is maintained due to

Reptiles, birds, land snails and insects excrete nitrogenous wastes as uric acid in the form of pellet or paste with a minimum loss of water and are called .

Important Questions on Excretory Products and their Elimination

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