TLS Online TPP Program

#Question id: 15766


 If a stem cell divides symmetrically, results

#Unit 5. Developmental Biology
  1. The expansion or reduction of the resident stem cell population.
  2. Stabilize the resident stem cell population
  3. The expansion of the resident stem cell population only
  4. Neither expansion nor reduction of the resident stem cell population
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TLS Online TPP Program

#Question id: 12012

#Unit 10. Ecological Principles

The average daily temperature change on an exposed south-facing slope and a north-facing slope for a late summer day in the Northern Hemisphere are shown below.

Compared with a south-facing slope, the climatic conditions on a north-facing slope favour the formation of a vegetation community best adapted to

TLS Online TPP Program

#Question id: 12013

#Unit 10. Ecological Principles

The average daily temperature change on an exposed south-facing slope and a north-facing slope for a late summer day in the Northern Hemisphere are shown below.


The difference in the  maximum average daily  temperature between the  south-facing slope  and  the  north-facing slope is approximately

TLS Online TPP Program

#Question id: 12014

#Unit 10. Ecological Principles

The receptive surface for pollen on an angiosperm flower is the

TLS Online TPP Program

#Question id: 12015

#Unit 10. Ecological Principles

The oxygen consumption of marine crabs acclimated to either 10°C or 20°C was measured at environmental temperatures of 5°C to 25°C to produce the following graph.

Which of the following can be correctly concluded from the information in the graph?

TLS Online TPP Program

#Question id: 12016

#Unit 10. Ecological Principles

The ability of a desert rodent's kidneys to form highly concentrated urine is largely attributable to

TLS Online TPP Program

#Question id: 12017

#Unit 10. Ecological Principles

All of the following allow hermaphroditic animal species to avoid inbreeding EXCEPT