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TLS Online TPP Program

#Question id: 12115

Although many  chimpanzee populations  live  in  environments containing oil  palm  nuts,  members of  only  a  few populations use stones to crack open the nuts. The most likely explanation for this behavioural difference between populations is that

#Unit 10. Ecological Principles
  1. The behavioural difference is caused by genetic differences between populations. 
  2. Members of different populations have different nutritional requirements.
  3. The cultural tradition of using stones to crack nuts has arisen in only some populations.
  4. Members of different populations differ in learning ability.
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TLS Online TPP Program

#Question id: 6969

#Unit 5. Developmental Biology

In Xenopus, the elongation of the mesoderm toward the anterior results from the intercalation of cells during a process called:
TLS Online TPP Program

#Question id: 28230

#Unit 5. Developmental Biology

which cells function in the organism to generate only one cell type ?
TLS Online TPP Program

#Question id: 14502

#Unit 13. Methods in Biology

The chances of a person being alive who is now 35 years old, till he is 75 are 8 : 6 and of another person being alive now 40 years old till he is 80 are 4 : 5. The probability that at least one of these persons would die before completing 40 years hence is
TLS Online TPP Program

#Question id: 14516

#Unit 13. Methods in Biology

The probability that a man aged 50 years will die within a year is 0.01125. The probability that out of 12 such men at least 11 will reach their fifty first birthday.
TLS Online TPP Program

#Question id: 2083

#Unit 2. Cellular Organization

Sphingolipids are considered amphipathic glycolipids if: