Answer:
Avirulent.
Explanation:
VIRULENCE is the ability of a pathogenic organism to infects the host, leading to damages or death of the host. The extent of these virulent effect depends on certain chemical substances ( called Virulence factors) produced during the pathogenic processes.
The virulence effects is achieved due to the ability of the virulent factor to disrupt the entire physiological mechanisms of the organisms; e,g crop plants; though suppression of the host immune response, disruptions of the immune mechanisms, colonization of the host DNA structure etc. Therefore the pathogenic effects suppressed the host resistance and spread throughout the host body system.
In this present scenario, the pathogenic effect of the likable bacteria; is not virulent, because
none of the d crop pant is completely diseased.
the nascent intenodes and leaves are growing to usual size.
Consequently, the physiological and the morphological features of the crop plants are still intact. Thus the infection is AVIRULENT.
Answer: Green Algae are closely related to plants.
Explanation: Green Algae are closely related to plants because of they possess photosynthetic pigments as plants.
Green algae and plants are closely related in that they can manufacture their own food from nutrients and sunlight through the process of photosynthesis
Green algae also possess the same carotenoids and chlorophyll a and b as land plants which make them closely related.
Kelps don't have these characteristics.
Answer: C) Prokaryotes convert nitrogen-containing molecules into forms that can't be used by other organisms.
Prokaryotes are the organisms that do not have a membrane bound nucleus, mitochondria and other organelle. They ranges in size of diameter from 0.1–5.0 µm.
Example:<em> Escherichia coli, Sulfolobus acidocaldarius archeobacterium </em>
Decomposers, play an important role in nitrogen cycle. Nitrogen gas is converted to nitrate compound by nitrogen fixing bacteria which are present in root nodules of leguminous plants.
Example: <em>Azotobacter </em>