Excretion In Plants-Multiple Choice Questions Quiz

Question 1: Which part of a plant is responsible for excreting excess water and some waste substances?

(a) Leaves
(b) Stems
(c) Roots
(d) Flowers

Question 2: Which waste gas is excreted by plant cells during respiration?

(a) Carbon dioxide (CO2)
(b) Oxygen (O2)
(c) Nitrogen (N2)
(d) Hydrogen (H2)

Question 3: What are the specialized cells found on the surface of leaves that help in excreting excess salts?

(a) Guard cells
(b) Xylem vessels
(c) Stomata
(d) Trichomes

Question 4: Which process involves the removal of metabolic waste products from plant cells into the vacuoles?

(a) Photosynthesis
(b) Transpiration
(c) Respiration
(d) Secretion

Question 5: What pigment gives color to the excreted substances in some plants, such as in the case of gummosis in peach trees?

(a) Chlorophyll
(b) Carotene
(c) Anthocyanin
(d) Xanthophyll

Question 6: In some plants, what is the name of the process by which excess salts are actively transported into older leaves before being shed?

(a) Osmosis
(b) Transpiration
(c) Guttation
(d) Senescence

Question 7: What is the primary purpose of excreting excess salts from plant cells?

(a) To attract pollinators
(b) To protect against herbivores
(c) To prevent water loss
(d) To regulate temperature

Question 8: What is the term for the shedding of leaves or other plant parts that are no longer functional?

(a) Senescence
(b) Dormancy
(c) Germination
(d) Photosynthesis

Question 9: Which of the following excretory processes involves the release of volatile organic compounds (VOCs) from plants?

(a) Transpiration
(b) Respiration
(c) Guttation
(d) Volatilization

Question 10: What is the name of the excretory substance produced by some plants as a defense mechanism against herbivores?

(a) Tannins
(b) Cellulose
(c) Glucose
(d) Amino acids

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Total score: /10

Answer key:

Question 1: a

Question 2: a

Question 3: c

Question 4: d

Question 5: c

Question 6: c

Question 7: c

Question 8: a

Question 9: d

Question 10: a