Here are 10 One-Word Answer Type Questions from the topic Excretion in Animals along with their answers and explanations:
1)
Question: What is the process of removal of waste materials from the body called?
Answer: Excretion
Explanation: Excretion is the biological process by which harmful and waste materials produced in the cells of living organisms are removed from the body.
2)
Question: Name the organ that filters waste from the blood in humans.
Answer: Kidney
Explanation: The kidneys filter waste materials like urea and excess water from the blood and form urine.
3)
Question: What is the tube called which carries urine from kidneys to the bladder?
Answer: Ureter
Explanation: Each kidney is connected to the urinary bladder by a tube called ureter, which transports urine.
4)
Question: What is the major excretory product in humans?
Answer: Urea
Explanation: Urea is the main waste product in humans, formed due to the breakdown of proteins in the body.
5)
Question: What is the storage organ for urine in humans?
Answer: Bladder
Explanation: The urinary bladder stores urine temporarily before it is removed from the body.
6)
Question: What is the process of cleaning the blood using an artificial kidney called?
Answer: Dialysis
Explanation: Dialysis is used when kidneys fail, and it filters waste products from the blood artificially.
7)
Question: Which opening helps to remove urine from the human body?
Answer: Urethra
Explanation: Urethra is the tube through which urine is passed out from the bladder to outside the body.
8)
Question: Which aquatic animals excrete waste in the form of ammonia?
Answer: Fish
Explanation: Fishes and other aquatic animals excrete ammonia which easily dissolves in water.
9)
Question: Which white-coloured semi-solid waste product is excreted by birds and lizards?
Answer: Uric acid
Explanation: Birds, lizards, and insects excrete waste in the form of uric acid to conserve water.
10)
Question: Which waste product is present in sweat along with water?
Answer: Salt
Explanation: Sweat contains water and dissolved salts which help in regulating body temperature and removing wastes.
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