In the Galapagos Islands, what led Darwin to suspect that species were not ‘fixed’ throughout time?
What will be an ideal response?
Answer: The reason that led Charles Darwin come to the conclusion that the species were not fixed is due to the presence of different types of Finches also known as Darwin’s finches. In the same Island, the same species of Galapagos Finches had different variations and there were around 15 different groups found.
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Which of the following is mostly performed by bacteria living within the roots of plants in the legume family?
a. nitrification b. ammonification c. nitrogen cycling d. nitrogen fixation e. nitrogen assimilation
How do spiders eat?
a. A spider mashes and manipulates food with its fangs so it can be swallowed whole b. Food is soaked into silk threads which are then consumed c. Food is partly digested externally and the nutritive juices are sucked into the stomach d. Food is stored in a crop and ground up in a gizzard e. Food is swallowed whole
Conspicuous shelf-like or saddle-like structures on the surface of a tree that indicate a fungus is growing within the tree are for:
A) showy display to attract a mate. B) defense from predators. C) pollination. D) reproduction and spore dispersal.
Autoimmune disorders are diagnosed using
A) detection of autoantibodies. B) blood tests. C) family history. D) metabolic factors. E) a collection of tests and careful assessment of signs and symptoms.