AP BIOLOGY

EVOLUTION

EVIDENCE FOR EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Scientists recently discovered that three different types of squid, a marine animal, previously thought to be three different species, were actually all members of one species. Their earlier ideas were based on using squid carcasses (dead bodies). The new, more accepted classification is most probably based on an analysis of
A
a greater number of squid carcasses
B
the feeding habits of the 3 different species
C
a number of newly found squid fossils
D
the DNA present in the cells of squid
Explanation: 

Detailed explanation-1: -Which statement correctly explains the rise of liquid in the tube at the end of the experiment? The concentration of sucrose molecules increased as water molecules entered the bag. This concentration increase pushed the liquid up the tube.

Detailed explanation-2: -Starch does not pass through the synthetic selectively permeable membrane because starch molecules are too large to fit through the pores of the dialysis tubing. In contrast, glucose, iodine, and water molecules are small enough to pass through the membrane.

Detailed explanation-3: -Homeostasis is a dynamic equilibrium that is maintained in body tissues and organs. It is dynamic because it is constantly adjusting to the changes that the systems encounter.

Detailed explanation-4: -Reproduction, unlike other life processes, is not essential to maintain the life of an individual organism.

There is 1 question to complete.