Tropical forests are being converted to farm or pasture land at an alarming rate, and one major focus is on the biodiversity and the impact to these ecosystems. What is a direct benefit to humans that helps explain why these forests need to be preserved?

TLS Online TPP Program

#Question id: 8956

#Unit 9. Diversity of Life Forms

Protostome characteristics generally include which of the following?

TLS Online TPP Program

#Question id: 8705

#Unit 9. Diversity of Life Forms

If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?

TLS Online TPP Program

#Question id: 10940

#Unit 7. System Physiology – Animal

Adhesion of white blood cells to the endothelium is

TLS Online TPP Program

#Question id: 12163

#Unit 8. Inheritance Biology

A cross is made between the two pure line homozygous plant their height is 6cm and 2cm. the F1 progeny shows 6 cm height. the variations takes place in F2 progeny , which were made by 

TLS Online TPP Program

#Question id: 9617

#Unit 9. Diversity of Life Forms

The common ancestors of birds and mammals were very early (stem) reptiles, which almost certainly possessed 3-chambered hearts (2 atria, 1 ventricle). Birds and mammals, however, are alike in having 4-chambered hearts (2 atria, 2 ventricles). The 4-chambered hearts of birds and mammals are best described as