Which of these taxa contains species that produce potent toxins that can cause extensive fish kills, contaminate shellfish, and poison humans?

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

Periods	Age of evolutionary event
A- Jurassic	I- Fish
B- Ordovician	II- Amphibian
C- Devonian	III- 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.