Relationships Flashcards
What is the common characteristics shared by predation, parasitism and commensalism?
The interacting species live closely together.
Prickly pear cactus was introduced in Australia,
and it was brought under control by
Cactus feeding predator (a moth) was introduced.
In a field experiment, when all starfish were removed from an enclosed intertidal area, more than 100 species of vertebrates become extinct due to co-extinction.
True or false?
False.
More than 10 species of invertebrates became extinct because of INTERSPECIFIC COMPETITION.
Nearly _____ % of all insects are known to be phytophagous.
25%
Why do cattle don’t feed on the weed Calotropis?
Because the plant produces
HIGHLY POISONOUS CARDIAC GLYCOSIDES
Which type of relationship do flamingoes and resident fishes show at South American lakes?
Competition (common food zooplankton)
Who gave the competitive exclusion principle?
Gause
Abingdon tortoise in Galapagos Islands became extinct within a decade of introduction of goats.
This was due to
Competition
What does Connell’s elegant field experiment showed?
It showed that the larger and competitively superior Barnacle BALANUS dominates the intertidal area, and excludes the smaller Barnacle CHATHAMALUS.
Who showed co-existence in 5 closely related species of warblers by their behavioural difference in foraging activities?
Mac Arthur
Human liver fluke has which two intermediate hosts?
Snail and fish
Marine fish have parasitic copepods.
What type of parasites are copepods?
Ectoparasites
Who has more complex life cycle, ecto or endo parasites?
Endoparasites
1)Orchid growing as an epiphyte
2) Barnacles on back of whales
3)Cattle egret and grazing cattle
4)Sea anemone and clown fish
All are examples of
Commensalism
Which orchid employs sexual deceit?
Mediterranean orchid, Ophyrus.
Pseudocopulation
