Practice Questions

TLS Online TPP Program

#Question id: 4944

What is true of the amino acids that might have been delivered to Earth within carbonaceous chondrites?

#XL - T Zoology

They had the same proportion of L and D isomers as Earth does today.
The proportion of the amino acids was similar to those produced in the Miller-Urey experiment.
There were fewer kinds of amino acids on the chondrites than are found in living organisms today.
They were delivered in the form of polypeptides.

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TLS Online TPP Program

#Question id: 18003

#XL - R Botany

In a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg?

1. micropyle 2. style

3. ovary 4. stigma

TLS Online TPP Program

#Question id: 18004

#XL - S Microbiology

Which of the following flower parts develops into a seed?

TLS Online TPP Program

#Question id: 18004

#XL - T Zoology

Which of the following flower parts develops into a seed?

TLS Online TPP Program

#Question id: 18004

#XL - R Botany

Which of the following flower parts develops into a seed?

TLS Online TPP Program

#Question id: 18005

#XL - S Microbiology

Which structure is common to both gymnosperms and angiosperms?

TLS Online TPP Program

#Question id: 18005

#XL - T Zoology

Which structure is common to both gymnosperms and angiosperms?