Grp 1_Adaptations to Aquatic Environments

Question 1

flowering plants returned to water as early as the ______ and multiple times subsequently

Answer 1

Cretaceous

Question 2

_________is the largest clade of aquatic angiosperms including all marine angiosperms, as well as terrestrial plants

Answer 2

Alismatales

Question 3

___________, which are important in iron intake, expanded in both submersed freshwater species and seagrasses.

Answer 3

Nicotianamine synthase genes

Question 4

__________ in roots, stems, and leaves improves the capture and transportation of oxygen

Answer 4

aerenchyma

Question 5

WGD events have been identified in two Alismatales lineages:

Answer 5

1) Zostera (Zosteraceae)
2) in Araceae

Question 6

A high proportion of duplicated genes at a node could be due to a WGD at that node

Answer 6

type I duplication

Question 7

a WGD that happened at one subclade within a node, but was lacking from another, could also lead to the detection of a high proportion of gene duplication at that node

Answer 7

type II or type III duplication

Question 8

Compared with type II and type III duplication, type I is more likely a real WGD

Question 9

Overall, out results suggested there are three candidate WGD events

Answer 9

1) the MRCA of core Alismatids
2) the MRCA of Araceae, and
3) the MRCA of Halodule.

Question 10

(SPs) are cell wall components. They are mainly found in algae, and lost in land plants

Answer 10

Sulfated polysaccharides

Question 11

encodes an epidermis-specific cell wall-located protein that is required for the formation of the cuticle in Arabidopsis

Answer 11

BODYGUARD (BDG) gene