Problem 134
Plants obtain most of its carbon from (a) Atmosphere (b) Water (c) Soil (d) All of these
Problem 135
Mincrals are mostly absorbed by (a) Active transport (b) Facilitated diffusion (c) Simple diffusion (d) All of these
Problem 136
Ions are absorbed from soil by (a) Active transport (b) Passive transport (c) Both (a) and (b) (d) None of these
Problem 137
Where is the control point for minerals, where a plant adjusts the quantity and types of solutes that reach the xylem? (a) Epidermal cell (b) Cortical cell (c) Endodermal cell (d) Pericycle cell
Problem 138
Endodermis actively transports ion in one direction because (a) It is inner to epidermis (b) Cell wall is suberized (c) Cell wall is lignified (d) Its cell membrane has special transport proteins
Problem 139
Chief sink of minerals are (a) Apical and lateral meristem (b) Young leafs and storage organs (c) Developing flower, fruits and seeds (d) All of these
Problem 140
Unloading of mineral occurs at the fine vein endings through (a) Diffusion (b) Active uptake (c) Both (a) and (b) (d) None of these
Problem 142
Which of the following helps in the transportation of minerals? (a) Xylem (b) Phloem (c) Both (a) and (b) (d) None of these
Problem 143
Sink and source in sucrose transport may be reversed depending on (a) Plant's need (b) Season (c) Both (a) and (b) (d) None of these
Problem 144
Phloem sap is mainly composed of (a) Water + Glucose (b) Water + Fructose (c) Water + Cellulose (d) Water + Sucrose
