d) Mention one Xerophytic habit in Equisetum.
e) How will you define the liverworts?
2. Give short answer of the following questions:
a) Distinguish between susceptibility and Immunity.
b) Write two important aspect of plant disease manageme
. Give short answer of the following questions:
a) Mention three economics importance of algae.
b) Draw and label the structure of typical bacterial cell.
Explain briefly the following questions:
a) Explain the mode of dehiscence of and dispersal of spor
Answers
Answer:
d)The xerophytic features are:
(vi) photosynthetic tissue in the stem. ADVERTISEMENTS: The hydrophytic characteristics on the other hand are (i) we 11-developed aerating system like carinal canal, vallecular canal and central pith cavity, and (ii) reduced vascular elements.
e)Scientific definitions for liverwort
Any of numerous small, green nonvascular plants of the division Marchantiophyta. ... Liverworts are common in the tropics and often grow in moist soil, on damp rocks, and on tree trunks. Some liverworts have leafy bodies, while others have only a simple thallus.
a)Susceptible is (epidemiology) a person who is vulnerable to being polluted by a certain disease while immune is (epidemiology) a person who is not exposed to infection by a disease. ... Susceptible is likely to be troubled by something while immune is exempt; not subject to.
b.Traditional Principles of Plant Disease Control
- Avoidance—prevent disease by selecting a time of the year or a site where there is no inoculum or where the environment is not favorable for infection.
- Exclusion—prevent the introduction of inoculum.
- Eradication—eliminate, destroy, or inactivate the inoculum.