Q2 of 29 Page 13

With the help of a schematic diagram describe the haplo-diplontic life cycle pattern of a plant group.



Alternation of generation takes place between gametophyte & sporophyte. i.e. the haploid & diploid phase, hence called haplodiplontic life cycle.


More from this chapter

All 29 →
9

In which plant will you look for mycorrhiza and corolloid roots? Also explain what these terms mean.

 1

Gametophyte is a dominant phase in the life cycle of a bryophyte. Explain.

 3

Lichen is usually cited as an example of ‘symbiosis’ in plants where an algal and a fungal species live together for their mutual benefit. Which of the following will happen if algal and fungal partners are separated from each other?

a. Both will survive and grow normally and independent from each other.


b. Both will die


c. Algal component will survive while the fungal component will die.


d. Fungal component will survive while algal partner will die. Based on your answer how do you justify this association as symbiosis.


 4

Explain why sexual reproduction in angiosperms is said to take place through double fertilization and triple fusion. Also draw a labelled diagram of embryo sac to explain the phenomena.