#Question id: 15198
#Unit 8. Inheritance Biology
#Question id: 11047
#Unit 6. System Physiology – Plant
As plants absorb water from the soil, they deplete the soil of water near the surface of the roots, This depletion due to
#Question id: 2984
#Unit 2. Cellular Organization
Certain unicellular eukaryotes, including diatoms and some yeasts, have mechanisms of nuclear division that may resemble intermediate steps in the evolution of mitosis. Which of the following is a characteristic feature of nuclear division in these organisms?
#Question id: 10482
#Unit 6. System Physiology – Plant
A herbicides dichlorophenyldimethylurea (DCMU) is known as diuron an inhibitor of photosynthetic electron transport. Which one of the following option would be correct about diuron?
a.) Blocks electron flow at the plastoquinone acceptors of PSII by competing for the binding site of plastoquinone
b.) causes a partial inhibition of stomatal closing
c.) accepts electrons from the early acceptors of PSI such as A0 and then reacts with oxygen to form superoxide, O2 –
d.) causes a partial inhibition of light-stimulated stomatal opening
#Question id: 7309
#Unit 5. Developmental Biology
Following statements are regarding to the molecular basis of the coincidence model in Arabidopsis.
A.
In Arabidopsis under short days, there is little overlap between CO mRNA
expression and daylight.
B.
CO protein does not accumulate to sufficient levels in the phloem to promote
the expression of the transmissible floral stimulus and the plant remains vegetative.
C. Under long days, the peak of CO mRNA abundance (at hours 12 through 16) overlaps with daylight (sensed by phyA and cryptochrome [cry]), allowing CO protein to accumulate.
D. CO activates FLC mRNA expression in the phloem, which
causes flowering when the FT protein is translocated to the apical meristem.
Which of the following is incorrect?