Plant Tissue
Plant Tissue: Overview
This topic covers concepts, such as Plant Tissues, Cellulose, Meristems, Meristematic Tissues on the Basis of Origin, Meristematic Tissues on the Basis of Position, Apical Meristems, Intercalary Meristems, Lateral Meristems, Cambium, Classification of Meristem Based on Plane of Division, Permanent Tissues, Cell Differentiation, Simple Permanent Tissues, Parenchyma, Chlorenchyma, Aerenchyma, Collenchyma, Sclerenchyma, Lignin, Sclereids, Complex Permanent Tissues, Vascular Bundle, Xylem, Tracheids, Vessels, Xylem Parenchyma, Xylem Fibers, Phloem, Sieve Elements, Companion Cells, Phloem Parenchyma, Phloem Fibers, Section of a Stem, Protective Tissues in Plants, Cuticle, Epidermis, Cortex, Cork, Suberin, Stomata & Guard Cells etc.
Important Questions on Plant Tissue
Which of the following tissue gives tensile strength against bending and swaying
Observe the given diagram and read the following statements.
(i) These are cells of collenchyma tissue.
(ii) At maturity these cells lose their nucleus and cytoplasm.
(iii) The cells are living and thick at their corners.
(iv) This tissue gives flexibility to plant parts.
Correct statements are:
Under light microscope types of simple
permanent tissue are distinguished on the basis
of property of
You remove four fresh tobacco leaves of similar size and age. Leave ''leaf '' as it is, smear ''leaf '' with vaseline on the upper surface, ''leaf '' on the lower surface and ''leaf '' on both the surfaces. Hang the leaves for a few hours and you observe that leaf wilts the most, leaf has wilted, leaf wilted less than leaf and leaf remains fresh. Which of the following conclusion is most logical?
Assertion (A): In spite of the absence of nuclei, the sieve tubes continue to live.
Reason (R): A companion cell is associated with each sieve tube.
Assertion (A): Meristem is located at all the growing points in a plant.
Reason (R): Meristem cells are highly specialised with lignified cell walls to provide support.
Which of the following are associated with companion cells?
Which among the following is the function of the root cap?
Which part of the root of the onion bulb aids in its longitudinal growth?
Plants tissues take up specific functions at maturity. Which of the following tissues continues to function even through dead at maturity?
Which vascular tissue contains sieve tubes and companion cells?
Which of the following tissue causes an increase in thickness of a root or stem of a dicotyledonous plant?
