Anatomy Of Flowering Plants Question 2
Question: Match column-I with column-II and choose the correct option.
Column-I Column-II A. Bull form cells I. Initiation of lateral roots B. Pericycle II. Root C. Endarchxylem III. Grasses D. Exarch xylem IV. Dicot leaf E. Bundle sheath cells V. Stem
Options:
A) A-II; B-V; C-IV; D-I; E-IV
B) A-II; B-V; C-I; D-III; E-IV
C) A-II; B-IV; C-I; D-III; E-V
D) A-III; B-I; C-V; D-II; E-IV
Show Answer
Answer:
Correct Answer: D
Solution:
[d] A - Bull form cells: They are large, bubble- shaped, empty colourless epidermal cells that occur in groups on the upper surface of the leaves of many grasses.
B - Pericycle: It is a thin layer of plant tissue between the endodermis and the phloem.
Initiation of lateral roots and vascular cambium during the secondary growth takes place in these cells.
C - Endarch xylem: When protoxylem lies towards the centre (pith) and metaxylem lies towards the periphery of the organ, it is called endarch xylem.
This type of xylem occurs in stems.
D - Exarch xylem: When protoxylem lies towards the periphery and metaxylem lies towards the centre, it is called exarch xylem.
This type of xylem occurs in roots.
E - Bundle sheath cells: They are layer of cells in plant leaves and stems that forms a sheath surrounding the vascular bundles.
These cells are found in dicot leaf.
BETA
