Update) Questions and Verified Answers|
100% Correct| Grade A
QUESTION
Refer to the following classes of vertebrates:
Birds are most closely related to which class
Answer:
Reptiles
QUESTION
Which class includes animals that have a moist skin as the primary organ for gas exchange
Answer:
Amphibians
QUESTION
Which class includes whales
Answer:
Mammals
QUESTION
Members of which class produce milk for their young in specialized skin glands
Answer:
Mammals
,QUESTION
Which class includes snakes
Answer:
Reptiles
QUESTION
The most probable explanation for the relative asses of the first- and second order consumers is
that
Answer:
Each link in the food chain of an ecosystem has less available energy than the previous link has
QUESTION
The energy incorporated into this ecosystem is most dependent on the
Answer:
Total amount of photosynthesis
QUESTION
Expenditures of solar energy, calculated by C. Juday for Lake Mendota in southern Wisconsin,
appear in the table below.
Refl ected or otherwise lost. . . . . . . .49.5%
Absorbed in evaporation of water . . 25.0%
Raised temperatures in the lake. . . . 21.7%
Melted ice in the spring . . . . . . . . . . . 3.0%
Used directly by organisms . . . . . . . . 0.8%
If the lake is assumed to be a typical ecosystem the percent of radiant energy from the sun that is
trapped in photosynthesis is about
Answer:
1%
,QUESTION
Inheritance of certain characteristics of the fruit fl y, Drosophila, is as indicated by the table
below.
Characteristic Dominant Recessive
Body color . . . . . . . Gray Black
Eye color. . . . . . . . . Red White
A female fruit fly had a gray body and white eyes. After being mated with a male fruit fly, she
laid 112 eggs that developed into the following kinds of offspring.
Number Body Eyes
28 Gray Red
29 Gray White
28 Black Red
27 Black White
With respect to body color, the male parent of the 112 offspring was most probably
Answer:
Homozygous black
QUESTION
Inheritance of certain characteristics of the fruit fl y, Drosophila, is as indicated by the table
below.
Characteristic Dominant Recessive
Body color . . . . . . . Gray Black
Eye color. . . . . . . . . Red White
A female fruit fly had a gray body and white eyes. After being mated with a male fruit fly, she
laid 112 eggs that developed into the following kinds of offspring.
Number Body Eyes
28 Gray Red
29 Gray White
28 Black Red
27 Black White
Examination revealed that all of the 56 red-eyed offspring were females and all of the 56 white-
eyed offspring were males. This observation indicated that
Answer:
, The gene for red or for white color is carried on the X chromosome
QUESTION
Inheritance of certain characteristics of the fruit fl y, Drosophila, is as indicated by the table
below.
Characteristic Dominant Recessive
Body color . . . . . . . Gray Black
Eye color. . . . . . . . . Red White
A female fruit fly had a gray body and white eyes. After being mated with a male fruit fly, she
laid 112 eggs that developed into the following kinds of offspring.
Number Body Eyes
28 Gray Red
29 Gray White
28 Black Red
27 Black White
In this experiment, the number of offspring that exhibit both recessive characters is
Answer:
27
QUESTION
Mendel's genetic law of ___ and recombination states that when gametes (sperm and egg) unite,
genes for each characteristic segregate into single units and then each characteristic joins with a
like character in order to create a gene.
Answer:
Segregation
QUESTION
Mendel's genetic Law of ___ ___ states that the apperance of a single trait won't affect the
emgerence of another trait; each characteristic for a trait is independtly inherited and no pattern
or relationship exists between the serperation and rejoining of different traits
Answer: