Types of Excretion

Q.

The cloaca in frog is a common chamber for the urinary tract, reproductive tract and

1. Notochord

2. Portal system

3. Hepatic portal vessels

4. Alimentary canal

5. Lymphatic system

Q.

The excretory product of an adult frog and tadpole respectively are

1. Urea in both

2. Urea and Ammonia

3. Ammonia and Uric acid

4. Urea and Uric acid

Q.

Stool of a person contains whitish grey colour due to malfunction of which type of organ?

1. Pancreas

2. Kidney

3. Liver

4. Spleen

Q.

Which of the following is not a metabolic waste?

1. Amino acid

2. Ammonia

3. Urea

4. All of these

Q. Which among the following are uricotelic?

1. Birds and reptiles
2. Birds and mammals
3. Fishes and mammals
4. Aquatic insects and fishes

Q. Which of the following steps are ATP dependent in urea cycle?
I. Combination of ammonia and $C{O}_2$
II. Conversion of ornithine to citrulline
III. Reaction of citrulline with aspartate
IV. Formation of urea

1. I only
2. I, II, III, and IV only
3. I and III only
4. I and IV only

Q.

Match the disorders given in column I with their symptoms under column II. Choose the answer, which gives the correct combination

Column I Column II

i. Asthma a. Inflammation of nasal tract
ii. Bronchitis b. Fully blown out alveoli.
iii. Rhinitis c. Spasm of bronchial muscles.

iv. Emphysema d. Inflammation of bronchi

1. i).➡c ii).➡d iii).➡a iv).➡b

2. i).➡c ii).➡d iii).➡b iv).➡a

3. i).➡d ii).➡b iii).➡a iv).➡c

4. i).➡d ii).➡a iii).➡b iv).➡c

Q. What is the mode of excretion seen in mammals and sharks?

1. Ammonotelism
2. Uricotelism
3. Guanotelism
4. Ureotelism

Q.

Which is the excretory structure in prawns?

Q.

Animals which excrete urea produced during metabolism of amino acids are

1. Ureotelic

2. Aminotelic

3. Uricotelic

4. Ammonotelic

Q. Why ammonia is the most toxic form of nitrogenous wastes?

Q. In urea cycle, urea is produced directly from

1. ammonia
2. arginine
3. fumarate
4. none of the above

Q. Ammonia is the most toxic form of waste that needs to be excreted.

1. False
2. True

Q. Why do some animals prefer uricotelism over ureotelism?

1. They live in dry places and have to conserve water
2. They have enough water available in their habitats
3. They are able to use uric acid as a poison in their defense mechanism against predators
4. None of the above

Q. Which is the major nitrogenous waste product in human beings?

1. Urea
2. Ammonia
3. Uric acid
4. Histidine

Q.

What is uricotelism?

Q. Which one of the following doesnt have a aminotelic excretory system?

1. Asterias
2. Unio
3. Limnaea
4. Oniscus

Q. Specialized excretory organs are absent in_______________.

1. Pila
2. Asterias
3. Sepia
4. Unio

Q. Which disease is caused due to high accumulation of uric acid in the bloodstream?

1. Uremia
2. Hypouremia
3. Hyperuremia
4. Hyperuricemia

Q. Which of the following is/are the connecting link between the urea cycle and TCA/Krebs cycle ?
I. Fumarate
II. Ornithine
III. Aspartate
IV. Citrulline

1. I only
2. I and II only
3. I and III only
4. I, II, III, IV

Q.

What is glycosuria?

1. High amount of sugar in urine

2. Low amount of fat in urine

3. Low amount of sugar in urine

4. Average amount of sugar in urine

Q. Which of these excretory products is most toxic?

1. Urea
2. Ammonia
3. Uric acid
4. None of the above

Q. Organisms that excrete amino acid is

1. Aminotelic
2. Ammonotelic
3. Uricotelic
4. Ureotelic

Q.

Match the following:

$\begin{array}{cc}i.\text{Ammonotelism (Bony fishes)}& a.\text{Amino acids}\\ ii.\text{Ureotelism (Frogs)}& b.\text{Guanine}\\ iii.\text{Uricotelism (Birds)}& c.\text{Ammonia}\\ iv.\text{Aminotelism (Molluscs)}& d.\text{Uric acid}\\ v.\text{Guanotelism (Spiders)}& e.\text{Urea}\end{array}$

1. i) $\Rightarrow$ a, ii) $\Rightarrow$c, iii) $\Rightarrow$ d, iv) $\Rightarrow$ b, v) $\Rightarrow$ e

2. i) $\Rightarrow$ d, ii) $\Rightarrow$ a, iii) $\Rightarrow$ e, iv) $\Rightarrow$ c, v) $\Rightarrow$ b

3. i) $\Rightarrow$ c, ii) $\Rightarrow$ e, iii) $\Rightarrow$ d, iv) $\Rightarrow$ a, v) $\Rightarrow$ b

4. i) $\Rightarrow$ a, ii).$\Rightarrow$ d, iii) $\Rightarrow$ b, iv) $\Rightarrow$ c, v).$\Rightarrow$ e

Q. Which are true about the following statement about kangaroo rats
a. They have dark colour, high rate of reproduction and excrete solid urine
b. They do not drink water, breathe at slow rate, and have their body covered with thick hair
c. The feed on dry seeds and do not required drinking water
d. They excrete very concentrated urine an|| do not use water to regulate body temperature

1. b and c
2. c and a
3. a and b
4. c and d

Q. Identify the wrong statement from the following.

1. Uric acid crystals can be retained in body for a considerate amount of time.
2. All of the above
3. Uric acid is the excretory product of uricotelic animals.
4. Uric acid crystals are non toxic and are insoluble in water.

Q. Ammonia requires very little amount of water for its elimination.

1. False
2. True

Q. Metabolic products of which of these substances are eliminated as nitrogenous wastes?

1. Proteins
2. Nucleic acids
3. Carbohydrates

4. Lipids

Q. Give two examples of uricotelic animals.

Q. Keber's organ is found in

1. Octopus
2. Pila
3. Sepia
4. Unio