Practice Questions

TLS Online TPP Program

#Question id: 346

The partial negative charge in a molecule of water occurs because ________.

#SCPH05 I Biotechnology

the oxygen atom donates an electron to each of the hydrogen atoms
the electrons shared between the oxygen and hydrogen atoms spend more time around the oxygen atom nucleus than around the hydrogen atom nucleus
the oxygen atom has two pairs of electrons in its valence shell that are not neutralized by hydrogen atoms
one of the hydrogen atoms donates an electron to the oxygen atom

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TLS Online TPP Program

#Question id: 5014

#SCPH06 I Botany

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: 5014

#SCPH28 | Zoology

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

#SCPH06 I Botany

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

TLS Online TPP Program

#Question id: 5015

#SCPH28 | Zoology

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

TLS Online TPP Program

#Question id: 5016

#SCPH06 I Botany

Approximately how far back in time does the fossil record extend?

TLS Online TPP Program

#Question id: 5016

#SCPH28 | Zoology

Approximately how far back in time does the fossil record extend?