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TLS Online TPP Program

#Question id: 11656

What is the assumption of Clements in colonizing successional  species?

#Section 1: Ecology
  1. possession of space is all-important and that the colonists that get there first determine subsequent community structure, such as facilitation
  2. Early colonists may exclude subsequent colonists such as
  3. Any species can start the succession, but the eventual climax community is reached in a somewhat orderly fashion, such as tolerance
  4. Each colonizing species made the environment a little different, such as facilitation
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TLS Online TPP Program

#Question id: 12262

#Section 1: Ecology

The myxoma virus was introduced to Australia to control an outbreak of which of the following pests? 
TLS Online TPP Program

#Question id: 3427

#Section 2: Evolution

Natural selection can alter the frequency of distribution allele and heritable trait in different following way

A- Accumulation of those mutation that increase fitness of population in changing environment

B- Check accumulation of mutation that lower the fitness of species in unchanging environment

c- occur when population is subjected to divergent selection
TLS Online TPP Program

#Question id: 11363

#Section 1: Ecology

Competition among individuals belonging to the same species is referred to as _________ competition.
TLS Online TPP Program

#Question id: 11172

#Section 1: Ecology

Consider the consequences of a harmless prey that evolves toward mimicry of a model that has an antipredator defense (Batesian mimicry). What happens to the effectiveness of this defense as more and more prey in the population are harmless mimics
TLS Online TPP Program

#Question id: 4602

#Section 2: Evolution

If the bacterium Staphylococcus aureus experiences a cost for maintaining one or more antibiotic-resistance genes, what would happen in environments that lack antibiotics?