Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332



Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem

Roots and shoots lengthen through activity at _______.

  1. a. apical meristems
  2. b. lateral meristems
  3. c. vascular cambium
  4. d. cork cambium

Summary Introduction

Concept Introduction: Meristems are regions of undifferentiated parenchyma cells which have the ability to divide continually during a growing season. The plant tissues arise from the meristem. As the plant grows, the cells divide continually by the process of mitosis. The division causes some meristem cells to push away from the root or shoot tip. Those cells will differentiate and the cells behind the meristem elongate take their specialized function. The meristem will remain at the tip, continually renewing itself by producing more cells.


Reasons for correct statement:

The roots and shoots of the plant lengthen and produce soft parts, such as leaves in the primary growth. The primary growth in the plants arises at the apical meristem. A mass of meristem cells will be present in the tip of the root and shoot.

Option a. is given as “apical meristem”. As the roots and shoots length by the activity at apical meristem, option a. is correct.

Reasons for the incorrect statements:

Option b. is given as “lateral meristems”.

The secondary growth of the plants like thickening of shoots and roots take place at the lateral meristem...

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