#Question id: 10718
#Unit 10. Ecological Principles
A researcher collects data on plant species composition in two habitats (P and Q) by using 10 quadrats each in both habitats. She calculates the average a-diversity and the 13-diversity of each habitat from this data (shown below). Which of the following can be inferred about these habitats?
A) Q has greater total diversity (γ) and more heterogeneous than P
B) Q has lower total diversity (γ) and less heterogeneous than P
C) P has lower total diversity (γ) and more heterogeneous than Q
D) P has greater total diversity (γ) and more heterogeneous than Q
#Question id: 10798
#Unit 6. System Physiology – Plant
Two other major groups of flavonoids found in flowers
and leaves of all green plants. The function of these two flavonoids in plants
are____
a) protect plants against being eaten by herbivores
and against being infected by microbial pathogens
b)
Protect cells from excessive UV-B radiation (280–320 nm) because they
accumulate in the epidermal layers of leaves and stems and absorb light
strongly in the UV-B region
c)
flavones and flavonols secreted into the soil by legume roots mediate the
interaction of legumes and nitrogen-fixing symbionts
d) They are are coloured terpenoid compounds that also
serve as accessory pigments in photosynthesis
Which of the following combination from the above statements is correct?
#Question id: 12067
#Unit 9. Diversity of Life Forms
#Question id: 11866
#General Aptitude
#Question id: 5006
#Unit 11. Evolution and Behavior
The oxygen revolution changed Earthʹs environment dramatically. Which of the following adaptations took advantage of the presence of free oxygen in the oceans and atmosphere?