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TLS Online TPP Program

#Question id: 12000

The graph below shows  the  growth  rates  of  populations  of  bacteria  that  have  evolved  for  many  generations  at different culture temperatures (25°C, 30°C, and 35°C). Each population grows over only a limited range of temperatures (its thermal niche), which are bounded by its critical thermal limits. Within this range, growth rate increases with temperature up to a maximal value and then declines rapidly with increasing temperature. Growth rates are known to be the major determinant of fitness for these bacteria.

Which of the following is true concerning the thermal dependence of growth rate   between 25°C and 30°C in these populations?

#Unit 10. Ecological Principles
  1. Thermal dependence is greatest in the population evolved at 25°C. 
  2. Thermal dependence is greatest in the population evolved at 30°C. 
  3. Thermal dependence is greatest in the population evolved at 35°C.
  4. Growth rates of all populations are equally thermally dependent over this temperature range.
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TLS Online TPP Program

#Question id: 5010

#Unit 11. Evolution and Behavior

Which of the following steps has not yet been accomplished by scientists studying the origin of life? 
TLS Online TPP Program

#Question id: 5011

#Unit 11. Evolution and Behavior

A swim bladder is a gas-filled sac that helps fish maintain buoyancy. The evolution of the swim bladder from lungs of an ancestral fish is an example of
TLS Online TPP Program

#Question id: 5012

#Unit 11. Evolution and Behavior

A

Silurian

I

Seed plants appear

B

Devonian

II

Gymnosperms dominant

C

Carboniferous

III

Invasion of land by primitive land plants

D

Jurassic

IV

first reptiles
TLS Online TPP Program

#Question id: 5013

#Unit 11. Evolution and Behavior

Following is correct match

PeriodsAge of evolutionary event
A- JurassicI- Fish
B- OrdovicianII- Amphibian
C- DevonianIII- Gymnosperm
D-Carbonyferous
IV- Invertebrates
TLS Online TPP Program

#Question id: 5014

#Unit 11. Evolution and Behavior

 Following geological time period and major evolutionary event?

I. Devonian                            A. Gymnosperms dominant

II. Jurassic                               B. Amphibians diversify; first reptiles

III. Carboniferous                  C. Mammals appear

IV. Triassic                           D. Seed plants appear
TLS Online TPP Program

#Question id: 5015

#Unit 11. Evolution and Behavior

 During which of the following largest mass extinction recorded in the history of life on Earth.