Homework Sourse1 i Compare the sections of root of a maize plant with that
1.
(i) Compare the sections of root of a maize plant with that of grain plant with respet to vascular bundles. (ii) Which of the above is a monocot and which is a dicot? (iii) State the importance of vascular bundles in a plant?
2.
What is meant by (i) Biopiracy and (ii) Biopatent.
Solution
Answer:
1) Maize plant is a monocot whereas the grain plant is dicot.
Scattered vascular bundles are observed in the stem of the maize, secondary growth is absent, no vascular cambium. Vascular bundles are arranged as a ring in stem of grain plant.
2)
Biopiracy: The utilization of the biological product sources (genetic materials or medicinal plant) with out any permission from concerned.
Biopatent: The excluisve rights given to a particular person or company for a particular biological source (Drugs, medicinal extracts from plants and also use of economically important microorganisms).
| Maize Plant | Grain plant |
| Fibrous root system | Tap root system |
| Lateral roots are also formed from pericycle | Lateral roots and corkcambium are formed from pericycle |
| Xylem and pholem are numerous | xylem and phloem are limited |
| Conjunctive tissue is sclerenchyme | Conjunctive tissue is parenchymatous |
| Pith is well developed | Pith is absent or small |
