Please refer to Transport in Plants Class 11 Biology Important Questions with answers below. These solved questions for Chapter 11 Transport in Plants in NCERT Book for Class 11 Biology have been prepared based on the latest syllabus and examination guidelines issued by CBSE, NCERT, and KVS. Students should learn these solved problems properly as these will help them to get better marks in your class tests and examinations. You will also be able to understand how to write answers properly. Revise these questions and answers regularly. We have provided Notes for Class 11 Biology for all chapters in your textbooks.

Important Questions Class 11 Biology Chapter 11 Transport in Plants

Objective Questions

Question. Sinks are related to
(a) transport of minerals
(b) stomata
(c) hydathodes
(d) phytochrome

Question. During fruit development, photosynthesizing leaves would be the __________ and the fruit would be __________
(a) sink, sink
(b) source, source
(c) sink, source
(d) source, sink

Question. _______is mainly water and sucrose, but other sugars, hormones and amino acids are also _______ through phloem.
(a) xylem sap, loaded
(b) phloem sap, translocated
(c) xylem sap, translocated
(d) phloem sap, loaded

Question. The process of loading at the source produces a _________. condition in the phloem.
(a) hypertonic
(b) isotonic
(c) hypotonic
(d) hydroponic

Question. Phloem tissue is composed of sieve tube cells, which form long columns with holes in their end walls called ______.
(a) tracheids
(b) sieve elements
(c) sieve plate
(d) companion cell

Assertion/Reason Type Questions

In the following questions, a statement of Assertion is followed by a statement of Reason.
(a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
(b) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
(c) If Assertion is true but Reason is false.
(d) If both Assertion and Reason are false.

Question. Assertion : More is the number of solute molecules, the lower is yw.
Reason : Presence of solute particles reduces the free energy of water and decreases the water potential.

Question. Assertion : Stomata are usually open in the day time and close during the night.
Reason : The opening or closing of stomata is due to the change in the turgidity of the guard cells.

Question. Assertion : Ions are absorbed from the soil only by active transport.
Reason : The proteins present in the membranes of root hair cells passively pump ions from the soil into the cytoplasm of the epidermal cells.

Critical Thinking Type Questions

Question. A plant cell placed in pure water will
(a) expand until the osmotic potential or solute potential reaches that of water.
(b) becomes more turgid until the pressure potential of cell reaches its osmotic potential.
(c) become more turgid until osmotic potential reaches that of pure water.
(d) becomes less turgid until the osmotic potential reaches that of pure water.

Question. Osmosis is a form of diffusion in which
(a) the solvent moves through a semipermeable membrane from its region of higher chemical potential
to its region of lower chemical potential.
(b) the solvent moves through a semipermeable membrane from its region of lower chemical potential to its region of higher chemical potential.
(c) the solute moves through a semipermeable membrane from a region of higher concentration to lower concentration.
(d) the solute moves through a semipermeable membrane from a region of lower concentration to higher
concentration.

Question. Read the given statement and answer the question :
“Osmosis is the diffusion of a solution of a weaker concentration when both are separated by semipermeable membrane”. What is the error in the statement ?
(a) The movement of solvent molecule is not specified.
(b) There is no mention of DPD.
(c) Behaviour of semipermeable membrane is not specified.
(d) The exact concentration of solutions are not indicated.

Question. Bacteria cannot survive in a highly salted pickle because
(a) salt inhibits reproduction of bacteria.
(b) they become plasmolysed and death occurs.
(c) nutrients in pickle cannot support life.
(d) enough light is not available for photosynthesis.

Question. Process of imbibition results in
(a) increase in the volume of imbibant but without development of pressure.
(b) decrease in the volume of imbibant and development of pressure.
(c) no change in volume of imbibant but pressure develops.
(d) increases in volume of imbibant and development of pressure.