Mature sieve elements external view, showing sieve plates. The pores in the sieve plates between the sieve tube elements are open channels, what is the relevance of this open pores in the sieve plates?

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#Question id: 3280

#Unit 11. Evolution and Behavior

Small populations are threatened by the loss of genetic diversity from

a. Inbreeding

b. Genetic drift

c. Limited mating

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#Question id: 19072

#Unit 6. System Physiology – Plant

Bacterial surface triggered immunity in the host plant gives response 

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#Question id: 10595

#Unit 10. Ecological Principles

If the per capita birth rate (b) and per capita death rate (d) in one year is 0.80 and 0.20 respectively. if the initial population size is 600, what will be net change (dN) in population size in one year

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#Question id: 4166

#Unit 3. Fundamental Processes

At the ribosome the template mRNA is translated in the __ direction, while the protein is synthesized in the __ direction.

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#Question id: 12714

#Unit 6. System Physiology – Plant

Physiological and biochemical perturbations in plants caused by fluctuations in the abiotic environment, given column I with environmental factor and with its effects in the form of primary effects  in column II and secondary effects  in column III

COLUMN I        (environmental factor )	COLUMN II            (primary effects)	COLUMN III         (secondary effects)
A) Water deficit	i) Hypoxia,  Anoxia	a) Membrane dysfunction
B) High temperature	ii) ROS production	b) Reduced cellular and metabolic activities, Leaf abscission, Ion cytotoxicity and Cavitation
C) Trace element toxicity	iii) Photo inhibition	c) Reduced respiration,     Fermentative metabolism,       Inadequate ATP production ,  ROS production and  Stomatal closure
D) Flooding and soil compaction	iv) Membrane destabilization	d) Inhibition of PSII repair
E) Chilling	v) Cell dehydration and Hydraulic resistance	e) Disruption of metabolism
F) High light intensity		f) Photosynthetic and respiratory inhibition, ROS production

Find out the correct combination of given above column;