Photosynthetic sugar molecules are transported via phloem to other parts of the plants. The following aspects are associated with sucrose unloading in phloem and its transport;

a) The presence of plasmodesmata is assumed to provide apoplastic transport. An absence of plasmodesmata between cells indicates an nonfunctional symplastic continuity

b) Phloem unloading and short-distance transport can occur via symplastic as well as apoplastic pathways

c) Both unloading and the short-distance pathway appear to be completely symplastic in some young eudicot leaves, such as sugar beet and tobacco

d) An apoplastic step is required in developing seeds because there are no symplastic connections between the maternal tissues and the tissues of the embryo

Which of the following combination is INCORRECT?

TLS Online TPP Program

#Question id: 11797

#Unit 6. System Physiology – Plant

A living cytoplasmic connection penetrate the walls between sieve tube elements and their companion cells; which are often complex and branched on the companion cell side, known as

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#Question id: 26944

#Unit 10. Ecological Principles

There is the graph showing continuous growth pattern with respect to N

Per capita growth is constant and independent of N

Change in density over change in time

Showing graph will be related to the continuous (exponential) growth

Giving the population logarithm is decreasing with respect to time

Which of the following statements is correct with reference to the graph?

TLS Online TPP Program

#Question id: 2725

#Unit 2. Cellular Organization

________ plays an important role in storing the energy needed for the unwinding of DNA during replication, recombination, repair and transcription.

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#Question id: 382

#Unit 1. Molecules and their Interaction Relevant to Biology

The molar ratio of sodium acetate to acetic acid in a buffer solution with a pH OF 5.76 is 10:1. Assuming the total buffer concentration is 2.2 X 10^-2 mol/L, how many grams of sodium acetate (m.w. 82) and how many grams of acetic acid (m.w. 60) should be used in preparing a litre of the solution?

TLS Online TPP Program

#Question id: 31107

#Unit 2. Cellular Organization

Which of the following small protein involved in actin treadmilling, but it binds specifically to F-actin in which the subunits contain ADP?