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TLS Online TPP Program

#Question id: 1497

In children with retinoblastoma, the chromosomal deletion that is present in all of their cells indicates that the chromosomal aberration:

#Unit 4. Cell Communication and Cell Signaling

  1. arose somatically in retinal cells.

  2. first occurred in the retina, and then spread to other cells.

  3. arose during early embryonic development.

  4. was inherited from a parent.

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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.