Mention whether the following statements are true (T) or false (F) and give explanation in support of your answer.

Home » Mention whether the following statements are true (T) or false (F) and give explanation in support of your answer.

Absorption by Roots – The Process Involved | ICSE

Mention whether the following statements are true (T) or false (F) and give explanation in support of your answer.

(a) Plasmolysis is reverse of deplasmolysis.

(b) Guttation is another name for bleeding in plants.

(c) Soaked seeds burst three seed coats.

(d) If the phloem of a twig is removed keeping the xylem intact, the leaves of a twig wilt.

(e) Guttation in plants occurs maximum at mid-day.

(f) Dry seeds when submerged in water swell up due to endosmosis.

(a) True

Explanation: Plasmolysis is the removal of cytoplasm from the cell wall caused by the withdrawal of fluid when inserted into a hypertonic solution. Deplasmolysis is the result of the re-insertion of a plasmolysed cell into a hypotonic solution as a result of which the protoplasm also swells with a strong pressure on the cell wall.

(b) False

Explanation: Water appears as small droplets on the sides or in leaf, especially in the early morning. This excess water loss is called guttation. Dehydration of the cut stem is called bleeding.

(c) False

Explanation: There is only one seed coat in a seed.

(d) False

Explanation: The leaves of the branch remain turgid since its xylem is complete and the xylem is responsible for the water flow in the plants.

(e) False

Explanation: Water appears as small droplets on the sides or in leaf litter, especially in the morning or at night. This is due to the excessive pressure of the roots.

(f) False

Explanation: Dry seeds when submerged in water swell up due to imbibition.

i

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