WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

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Well structured WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion can serve as a valuable review tool before exams.

Excretion Class 9 WBBSE MCQ Questions

Multiple Choice Questions :

Question 1.
One objective of excretion is –
(A) Disposal of metabolic waste matters
(B) Disposal of excess water
(C) Disposal of unwanted salts
(D) All of these
Answer:
(D) All of these

Question 2.
Plants dispose their excretory matters by –
(A) Shedding leaves
(B) Shedding fruits
(C) Exfoliation of bark
(D) All of these
Answer:
(D) All of these

Question 3.
‘Dhuna’ is a , secreted from sal tree.
(A) Gum
(B) Resin
(C) Alkaloid
(D) Olio resin
Answer:
(B) Resin

WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

Question 4.
Camphor is a –
(A) Gum
(B) Resin
(C) Alkaloid
(D) Olio resin
Answer:
(A) Gum

Question 5.
A latex producing plant is –
(A) Pine
(B) Calotropis
(C) Mango
(D) Both (B) and (C)
Answer:
(D) Both (B) and (C)

Question 6.
Papain is secreted from –
(A) Pea
(B) Papaya
(C) Pumpkin
(D) Potato
Answer:
(B) Papaya

Question 7.
Rauvolfia is the source of-
(A) Quinine
(B) Reserpine
(C) Morphine
(D) Tannin
Answer:
(B) Reserpine

WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

Question 8.
A non-nitrogenous plant excretory matter is –
(A) Reserpine
(B) Caffeine
(C) Daturine
(D) Tannin
Answer:
(D) Tannin

Question 9.
A nitrogenous plant excretory product is-
(A) Latex
(B) Tannin
(C) Resin
(D) Theine
Answer:
(D) Theine

Question 10.
Which is used as a strong pain kilier?
(A) Daturine
(B) Quinine
(C) Tannin
(D) Morphine
Answer:
(D) Morphine

Question 11.
Which of the following is used as a nerve soother and blood pressure regulator?
(A) Reserpine
(B) Morphine
(C) Caffeine
(D) Tannin
Answer:
(A) Reserpine

WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

Question 12.
Excretory organ of unicellular organism is-
(A) Lysosome
(B) Contractile vacuole
(C) Endoplasmic reticula
(D) Golgi body
Answer:
(B) Contractile vacuole

Question 13.
Flame cells are seen in-
(A) Tapeworm
(B) Earthworm
(C) Round worm
(D) Caterpillar
Answer:
(A) Tapeworm

Question 14.
Nephridia open outside the body through-
(A) Nephrostome
(B) Nephridiopore
(C) Excretory pore
(D) Anus
Answer:
(B) Nephridiopore

Question 15.
Malpighian tubule is associated with the excretory system of-
(A) Tapeworms
(B) Earthworms
(C) Insects
(D) Starfishes
Answer:
(C) Insects

WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

Question 16.
Outer covering of human kidney is popularly known as –
(A) Pericardium
(B) Pleura
(C) Renal cortex
(D) Capsule
Answer:
(D) Capsule

Question 17.
Uretar comes out from-
(A) Pelvis
(B) Renal cortex
(C) Renal medulla
(D) Major calyces
Answer:
(A) Pelvis

Question 18.
An example of uricotelic organism is –
(A) Human
(B) Monkey
(C) Bird
(D) Amoeba
Answer:
(C) Bird

WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

Question 19.
Malpighian corpuscle is composed of-
(A) Afferent and efferent arteriole
(B) Bowman’s capsule and efferent arteriole
(C) Glomerular filtrate
(D) None of these
Answer:
(D) None of these

Question 20.
Transfer of excretory matters from blood to the nephron occurs at-
(A) Bowman’s capsule
(B) Glomerulus
(C) Malpighian corpuscle
(D) Malpighian tubule
Answer:
(C) Malpighian corpuscle

Question 21.
The major site for water absorption in nephron is-
(A) Malpighian corpuscle
(B) Proximal convoluted tubule
(C) Loop of Henle
(D) Distal convoluted tubule
Answer:
(C) Loop of Henle

Question 22.
The component present in glomeruiar filtrate but absent in normal urine, is-
(A) Blood
(B) Protein
(C) Ammonia
(D) Creatinine
Answer:
(B) Protein

WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

Question 23.
Ketone body is an excretory product produced during metabolism of-
(A) Amino acid
(B) Monosaccharide
(C) Fat
(D) Proteins
Answer:
(C) Fat

Question 24.
is excreted through the lungs.
(A) Amino acids
(B) CO2
(C) Acetone
(D) Uric acid
Answer:
(B) CO2

Fill in the blanks :

  1. A flavour adding plant product, asafoetida is a _____.
  2. A latex, named _____ is used as a digestive enzyme.
  3. Amino acids are reabsorbed in the _____ tubule of nephron.
  4. Creatine and _____ are secreted in the distal convoluted tubule.
  5. _____ is the largest excretory organ of the human body.
  6. The proximal end of nephron consists of _____.
  7. _____ is the structural and functional unit of the kidneys.
  8. _____ is the plant excretory product present in apples.
  9. In animals, urea is produced as an end product of _____ metabolism.
  10. The base of urethra is equipped with _______ muscles, which help to hold the urine inside urinary bladder.

Answer:

  1. Resin
  2. Papain
  3. Proximal convoluted
  4. Creatinine
  5. Skin
  6. Bowman’s capsule
  7. Nephron
  8. Malic Acid
  9. Protein
  10. Sphincter

WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

State true or false :

  1. Resin of pine is used as a fixative of lime based paints.
  2. Alkaloids are soluble in water but insoluble in ethyl alcohol.
  3. Coffee is obtained from seeds of Coffea arabica plant.
  4. Paramoecium carries out excretion by forming contractile vacuoles.
  5. The concave face of the kidney is called pelvis.
  6. The afferent renal arteriole comes out of the Bowman’s capsule.
  7. Creatine and creatinine are secreted from the proximal convoluted tubule.
  8. A nephron has 2 parts-malpighian tubule and renal tubule.
  9. In cockroach, malpighian tubules absorb nitrogenous waste matters from haemolymph.
  10. In liver fluke, the entire excretory matter is disposed finally through excretory pore.
  11. Nephridium is the excretory organ of annelids.
  12. Human skin has no function in excretion.

Answer:

  1. False
  2. False
  3. True
  4. True
  5. True
  6. False
  7. False
  8. False
  9. True
  10. True
  11. True
  12. False

WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

Match the columns :

Question 1.

Left column Right column
1. Contractile vacuole A. Dog
2. Flame cell B. Amoeba
3. Nephridia C. Butterfly
4. Malpighian tubule D. Tapeworm
E. Leech

Answer:

Left column Right column
1. Contractile vacuole B. Amoeba
2. Flame cell D. Tapeworm
3. Nephridia E. Leech
4. Malpighian tubule C. Butterfly

WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

Question 2.

Left column Right column
1. Reserpine A. Cinchona officinalis
2. Morphine B. Rauvolfia serpentina
3. Quinine C. Camellia sinensis
4. Caffeine D. Papever somniferum
E. Coffea arabica

Answer:

Left column Right column
1. Reserpine B. Rauvolfia serpentina
2. Morphine D. Papever somniferum
3. Quinine A. Cinchona officinalis
4. Caffeine E. Coffea arabica

Question 3.

Left column Right column
1. Heart A. Capsule
2. Muscle B. Pleura
3. Lungs C. Pericardium
4. Kidney D. Meninges
E. Perimysium

Answer:

Left column Right column
1. Heart C. Pericardium
2. Muscle E. Perimysium
3. Lungs B. Pleura
4. Kidney A. Capsule

WBBSE Class 9 Life Science MCQ Questions Chapter 3.5 Excretion

Question 4.

Left column Right column
1. Lungs A. Ventricles
2. Kidney B. Villi
3. Nerves C. Alveoli
4. Small intestine D. Nephron
E. Neuron

Answer:

Left column Right column
1. Lungs C. Alveoli
2. Kidney D. Nephron
3. Nerves E. Neuron
4. Small intestine B. Villi

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