The herbaceous plant Achillea lanulosa is widespread in the Northern Hemisphere. Phenotypic variation in the species has been extensively studied along an altitudinal gradient from sea level to over 3,000 meters. In California there is conspicuous variation in  height; alpine plants are only several centimeters tall  while  those in  the San Joaquin Valley may reach a height of 1.8 meters. Adaptation to different local environments also results in variation in physiological processes such as photosynthetic rate, resistance to cold, and the timing of dormancy.

The genetic polymorphism found in Achillea lanulosa is most likely maintained primarily by

#Question id: 19826

#Unit 12. Applied Biology

 _________are low molecular weight antibiotic polyphenolic or terpenoid compounds produced by plant cells

#Question id: 19825

#Unit 12. Applied Biology

The elicitor produced by a pathogen is which type of molecule 1. Protein encoded by an avirulence gene 2. Products of metabolic activity of this protein Which of them are correct?

1. Protein encoded by an avirulence gene

 2. Products of metabolic activity of this protein

Which of them are correct? 

Which of them are correct?ch of them are correct? 

#Question id: 19824

#Unit 12. Applied Biology

Several biochemical reactions heading to the production of active oxygen species, phytoalexin biosynthesis occurs due to

#Question id: 19823

#Unit 12. Applied Biology

The elicitors are recognized by receptor-like molecules present in resistant plants. This recognition initiates several biochemical reactions such as

1. Phytoalexin biosynthesis

2. Cell wall reinforcement

3. Release of hydrolytic enzymes

4. Rapid cell death

Which of the following is/are correct?

#Question id: 19822

#Unit 12. Applied Biology

Recognition of which molecules by receptor-like molecules present in resistant plants initiates several biochemical reactions?

#Question id: 19821

#Unit 12. Applied Biology

The incompatible reaction is found in obligate parasites, and is associated with hypersensitive response of the host triggered by certain unique molecules called