NJASK Science
Preparation Assignment
Name: Caroline B.
Date: 4/5/11
Chapter 4: Diversity of Living Things
1. Read the packet, pgs. 81-96. This is an excellent overview of all the topics on this section of the
NJASK.
2. Complete the following banks of questions and record your answers below.
Pg. 86- Skills Activity 1
1. C. A Water Habitat
2. D. Internal Fertilization
3. A. They live on land and in water.
4. B. Reptilia
5. Mammals have either internal or external fertilization and development. External
Fertilization=External Development
Pg. 87 – Question Set 1
1. B. Sexual Reproduction Involving Two Parents
2. C. Diagram 3
3. D. Fertilization=Cell reproduction
4. C. A grower attempting to guarantee his customers an identical strain of roses.
5. C. The genes in the new cells are identical to the genes of the parent cell.
6. B. An Artificial Form of Asexual Reproduction.
7. 23 because a chromosome is half of the eggs chromosomes, and half of the sperm chromosomes.
Math: 23(Egg) X 23(Sperm) = 43(Chromosomes in the Human Body)
8. 8 because the total amount is half from the egg and half from the sperm. This means that 4 from the
sperm and four from the egg; when you add them together you get 8 chromosomes in all.
9. It is necessary for the number of chromosomes to be halved during sexual reproduction, because if
they weren’t there would be 96 chromosomes in all. Because if the cells weren’t halved then each time
they reproduced there would be double the amount. But because we halve the cells the amount always
stays the same. Also if you had anything more than 23 there would be a malfunction in the offspring.
This would cause it to function improperly because there would be the wrong amount of chromosomes.
NJASK Science
Preparation Assignment
Name: Caroline B.
Date: 4/5/11
10. There is a greater variation between living things that reproduce sexually, because they might not
get the exact traits as one of their parents. This means they will look different. But for asexual living
things, they are exact copies of their one parent this means that there is no variation among the
offspring.
11. Cell Division/ Asexual
12. The cells are exactly the same, except a bit smaller. But as the cell grows it will become the same size
as the parent.
Pg. 93- Skills Activity 2
1. C. Only the offspring that turned left inherited the learned behavior. B. The learned behavior of the
parent mice was not inherited by their offspring.
2. Yes, because it explains that it is random, and that some could inherit the trait but others can’t. No,
because they are adapting to their environment. It is not even a trait.
3. That the ones who inherit the trait will turn left, but the ones who don’t will have to adapt to their
“environment” so they can move. They will have to learn to turn left.
Pg. 94 – Question Set 2
1. B. Type B.
2. B. A series of genetic mutations over a long period of time.
3. C. Imitating another species.
4. B. Natural selection favored viceroys that were most similar to the monarch.
5. D. Adequate food supply.
6. C. White fur provides camouflage in the snow.
7. C. They are often found near homes of people who put thistle seed in bird feeders.
8. C. Sexual Reproduction involves the separation and recombination of genes, thus producing and
maintaining variations. This is for question 10.—Mutations through genes.
9. Brown eyes, because it is an actual trait on one of his chromosomes. The scar, broken finger, and
good vocabulary can’t be inherited. The brown eyes, can be passed on by reproduction.
10. Modern scientists explain the changes within a species that can lead to evolution by looking at past
evolution scenarios, and seeing the changes in environment compared to the changes in the organism
NJASK Science
Preparation Assignment
Name: Caroline B.
Date: 4/5/11