Question

Need an answer and explanation please

Which of the following was derived from an ancestral cyanobacterium?

a) mitochondrion

b) hydrogenosome

c) mitosome

d) chloroplast

Put the following structures in order following meiosis in the alternation of generations life cycle:

1) spores

2) gametes

3) sporophyte

4) gametophyte

5) zygote

a) 2,4,1,5,3

b) 1,5,3,2,4

c) 2,5,3,1,4

d) 1,4,2,5,3

When pathogenic fungi are found growing on the roots of grape vines, grape farmers sometimes respond by covering the ground around their vines with plastic sheeting and pumping a gaseous fungicide into the soil. The most important concern of grape farmers who engage in this practice should be that the

a) fungicide might also kill the native bacteria residing on the surfaces of the grapes

b) lichens growing on the vines branches are not harmed

c) fungicide might also kill mycorrhizae

d) sheeting is transparent so that photosynthesis can continue.

Answer 1

Ans 1- Chloroplast was derived from ancestral cyanobacterium , ( endosymbiotic theory)

Ans2- correct ans is C

Gametes, Zygote , sporophyte, spores , gametophyte

Ans 3 - correct ans c - fungicide may kill mycorrhiza which is a fungal association with roots of vascular plants. mycorrhiza increases plant efficiency to absorb water and minerals.