class 11 biology transport in plants mcqs and answers with free pdf are the most important part of all competitive medical entrance exams like neet, aiims, jipmer and other board exams.
Class 11 Biology Transport in Plants MCQs and Answers FREE PDF Download
1 Path of water movement from soil to xylem is
(A) Soil – root hair- cortex-pericycle- endodermis- metaxylem-protoxylem
(B) Soil – root hair-cortex-endodermis-pericycle- protoxylem-metaxylem
(C) Soil- root hair-epidermis-phloem-xylem
(D) Soil- root hair- epidermis-cortex-xylem- phloem
Answer: Soil – root hair-cortex-endodermis-pericycle- protoxylem-metaxylem
2 Stomatal opening is under the control of _____________
(A) Epidermal cells
(B) Subsidiary cells
(C) Guard cells
(D) Mesophyll cells
3 Ascent of sap is __________
(A)
Upward movement of organic matter in plants
(B)
Downward movement of organic matter in plants
(C)
Downward movement of water in plants
(D)
Upward movement of water in plants
Answer: Upward movement of water in plants
4 Hydathodes are associated with _________
(A) Guttation
(B) Transpiration
(C) Respiration
(D) Transportation
5 The process of guttation takes place when _________
(A) The root pressure is high and the rate of transpiration is low
(B) The root pressure is low and the rate of transpiration is high
(C) The root pressure equals the rate of transpiration
(D) The root pressure as well as the rate of transpiration is high
Answer: The root pressure is high and the rate of transpiration is low
6 The element involved in the opening and closing of stomata is
(A) Chlorine
(B) Sodium
(C) Potassium
(D) Calcium
7 Phloem sap is mainly made of ____________
(A) Water and sucrose
(B) Water and glucose
(C) Water and starch
(D) Water and fructose
8 The following type of guard cells are found in ______________
(A) Dicots
(B) Monocots
(C) Gymnosperms
(D) Ferns
9 Which one of the following is a driving force for the process of passive absorption of water in roots?
(A) Activity of aquaporins
(B) Increase in imbibition pressure in root cells
(C) Root pressure
(D) Transpiration pull
Answer: Transpiration pull
10 Which elements are readily mobilized in plants?
(A) S,N,Mo
(B) S,N,P
(C) S,N,B
(D) S,Mn,Mo
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