Match the CORRECT combination of the phloem elements with its function.

            PHLOEM ELEMENTS                                                  FUNCTIONS

P) sieve tube elements                                    i) for protection and strengthening of the tissue

Q) sieve cells                                                  ii) store and release food molecules

R) companion cells                                        iii) food translocation in angiosperm

S) Phloem parenchyma cells                          iv) latex containing cells

T) Phloem fibers and sclereids                       v) help in flow of solute and show high, metabolic activity

U) laticifers                                                     vi) food translocation on gymnosperm

#Question id: 15406

#Unit 8. Inheritance Biology

#Question id: 15388

#Unit 8. Inheritance Biology

#Question id: 15387

#Unit 8. Inheritance Biology

#Question id: 5299

#Unit 8. Inheritance Biology

One particular group of mutant strains specifically required the amino acid arginine to grow, and these arginine auxotrophs formed the basis of their subsequent analysis, given in table 

#Question id: 5298

#Unit 8. Inheritance Biology

Four E. coli strains of genotype a+ b− are labeled 1, 2, 3, and 4. Four strains of genotype a− b+ are labeled 5, 6, 7, and 8. The two genotypes are mixed in all possible combinations and (after incubation) are plated to determine the frequency of a+ b+ recombinants. The following results are obtained, where M = many recombinants, L = low numbers of recombinants, and 0 = no recombinants. On the basis of these results, assign a sex type (either Hfr, F+, or F−) to each strain

#Question id: 5297

#Unit 8. Inheritance Biology

In a generalized transduction experiment, phages are collected from an E. coli donor strain of genotype cys+ leu+thr+ and used to transduce a recipient of genotype cys_ leu_ thr_. Initially, the treated recipient population is plated on a minimal medium supplemented with leucine and threonine. Many colonies are obtained. These colonies are then replica-plated onto three different media: What is order of gene?