Practice Test 1 Flashcards
Which of the following possesses exoskeleton made of Calcium Carbonate? a. Lobsters b. Insects c. Snails d.Scorpio e Spiders
Snails.
Snails are mollusk characterized by soft body & having mantles which secrete calcerous ( calcium carbonate) exoskeleton.
What is the correct sequence of the levels of biological organizations?
organism -> population -> community -> ecosystem -> biosphere
Describe a simple twitch response.
Contractions combine to become more stronger and prolonged (Temporal summation)
Describe agonistic display and give example.
Agonistic display involves threatening & submissive behaviors. This determines which competitor gains access to some sort such as food or mates.
ex: a dog baring its teeth and erecting its ear.
Chemosynthetic bacteria oxidizes what element to harvest the energy to make glucose?
Nitrogen, Sulfur or Iron
Which of the following is not an intraspecific interaction?
a. Behavioral display
b. pecking orders
c. territoriality
d. Response to chemicals such as pheromones
e. Imprinting
Imprinting is a process in which environmental patterns or objects presented to a developing organism during a brief critical period in early life become accepted permanently as an element of behavioral environment.
Primitive euk such as Euglena with both plant-like and animal-like characteristics were historically classified as?
Protista
Which of the following is not a vestigial structure?
a. Human appendix
b. Human coccyx
c. Leg splints of a horse
d. two-layer grastula
e. whale hind limb bones
Two-Layer Grastula
A small local population of a specie is more closely related genetically than the rest of the species because of frequently inbreeding. They will also be influenced by the same environmental factors and therefore be subjected to the same selection process. They are known as?
Deme
In plant circulation, which of the following does not explain the rise of water in xylem?
a. valves which prevent backflow.
b. Transpirational Pull
c. Capillary action
d. root pressure.
e. cohesion of water due to hydrogen bonding
Valves which prevent backflow.
Xylem vessels do not contain Valves
Phototropism & geotropism in plants results from which class of hormone?
Auxins
Phototropism= tendency of the shoots of plants to bend towards light sources.
Geotropism= Growth of portions of plants towards and away from gravity.
In the leaf, which area contains elongated cells with chloroplast spread over a large surface area?
Palisade Layer
Which hormone raises the concentration of blood calcium?
Aldosterone
