IGCSE Biology Paper-3: Specimen Questions with Answers 313 - 314 of 358

Fig. is a drawing of a cross-section of a root.

Question 313 (1 of 3 Based on Passage)

Short Answer▾

Identify and label the structures on Fig. 28.1 using label lines and the labels:

Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
Xylem is the specialized tissue of vascular plants that transports water and nutrients from the plant – soil interface to stems and leaves, and provides mechanical support and storage. The water-conducting function of xylem is one of the major distinguishing features of vascular plants.
Phloem is the vascular tissue in charge of transport and distribution of the organic nutrients. The phloem is also a pathway to signaling molecules and has a structural function in the plant body.

Short Answer▾

The list shows some of the structures in a plant.

Write the structures in order of size from smallest to largest.

In order of increasing complexity, multicellular organisms like plants consist of:

In Order of Increasing Complexity, Multicellular Organisms like Plants Consist Of
Structure	Description
Organelle	Cell structure that is specialized to carry out a particular function or job
Cell	Basic structural and functional unit of a living organism
Tissue	Group of cells with similar structures, working together to perform a shared function
Organ	Structure made up of a group of tissues, working together to perform specific functions
Organ system	Group of organs with related functions, working together to perform body functions