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TLS Online TPP Program

#Question id: 9177

Which of the following statements regarding turnover in a lake is correct?

#SCPH06 I Botany
  1. In fall turnover, dense water at 4°C sinks and disturbs sediments in the benthic zone.
  2. In fall turnover, dense water at 4°C rises and disturbs sediments in the benthic zone.
  3. The surface water gets to 4°C only by cooling.
  4. Fall turnovers and spring turnovers are exactly the same.
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TLS Online TPP Program

#Question id: 26905

#SCPH06 I Botany

The IUCN Red List is based on a set of criteria to evaluate species vulnerability to extinction. Which one or more of the options is/are used as criteria?
.Absolute population size
Geographic range
Economic value
Change in population size over time
TLS Online TPP Program

#Question id: 4575

#SCPH06 I Botany

Monkeys of South and Central America have prehensile tails, meaning that their tails can be used to grasp objects. The tails of African and Asian monkeys are not prehensile. Which discipline is most likely to provide an evolutionary explanation for how this difference in tails came about?
TLS Online TPP Program

#Question id: 18893

#SCPH01 Biochemistry

In fluorescence microscopy, which of the following performs the function of removing all light except the blue light?
TLS Online TPP Program

#Question id: 7042

#SCPH01 Biochemistry

Potentiating the effect on phenotypic variation, when normal zebrafish of the same age, zebrafish embryos exposed to ____X____ the larvae develops with severe developmental anomalies, including reduction in the size of head, gill, and thoracic cartilages associated with cranial neural crest migration. What is X?
TLS Online TPP Program

#Question id: 5613

#SCPH01 Biochemistry

Female mice with the CD9 gene knocked out are infertile because