Fertilization and Development Reading ISA (B)
Directions: Read the text below. Use textual evidence to HELP answer the questions ON THE LOOSELEAF BELOW.
Fertilization is the process of a sperm cell joining with an egg cell or ovum. Fertilization usually occurs in the upper
portion of an oviduct near the ovary. In humans, sperm and eggs normally contain 23 chromosomes. Fertilization brings
these chromosomes together, restoring the number of 46 chromosomes. Therefore, the fertilized egg, or zygote, contains 46
chromosomes.
There are two types of fertilization: internal and external. Organisms that use external fertilization release many eggs
into bodies of water. Therefore, there is no parental care for the eggs. Eggs that are fertilized internally are well protected
and release a limited number of eggs inside the female.
Once eggs are fertilized, zygotes develop into embryos. Development can occur internally or externally. Organisms that
develop internally rely on the mother for nutrients and gas exchange. Organisms that develop externally get nutrition from
the yolk sac.
Questions:
1. Describe fertilization.
2. Why does a human zygote consist of 46 chromosomes?
3. Identify the two types of fertilization.
4. Contrast internal and external fertilization in two ways.
5. Identify the two types of development.
6. Contrast internal and external development in two ways.
7. Identify two organisms that use internal and external fertilization.
8. Identify two organisms that use internal and external development.
Fertilization and Development Reading ISA (B)
Directions: Read the text below. Use textual evidence to HELP answer the questions ON THE LOOSELEAF BELOW.
Fertilization is the process of a sperm cell joining with an egg cell or ovum. Fertilization usually occurs in the upper
portion of an oviduct near the ovary. In humans, sperm and eggs normally contain 23 chromosomes. Fertilization brings
these chromosomes together, restoring the number of 46 chromosomes. Therefore, the fertilized egg, or zygote, contains 46
chromosomes.
There are two types of fertilization: internal and external. Organisms that use external fertilization release many eggs
into bodies of water. Therefore, there is no parental care for the eggs. Eggs that are fertilized internally are well protected
and release a limited number of eggs inside the female.
Once eggs are fertilized, zygotes develop into embryos. Development can occur internally or externally. Organisms that
develop internally rely on the mother for nutrients and gas exchange. Organisms that develop externally get nutrition from
the yolk sac.
Questions:
1. Describe fertilization.
2. Why does a human zygote consist of 46 chromosomes?
3. Identify the two types of fertilization.
4. Contrast internal and external fertilization in two ways.
5. Identify the two types of development.
6. Contrast internal and external development in two ways.
7. Identify two organisms that use internal and external fertilization.
8. Identify two organisms that use internal and external development.
Fertilization and Development Reading ISA (B)
Directions: Read the text below. Use textual evidence to HELP answer the questions ON THE LOOSELEAF BELOW.
Fertilization is the process of a sperm cell joining with an egg cell or ovum. Fertilization usually occurs in the upper
portion of an oviduct near the ovary. In humans, sperm and eggs normally contain 23 chromosomes. Fertilization brings
these chromosomes together, restoring the number of 46 chromosomes. Therefore, the fertilized egg, or zygote, contains 46
chromosomes.
There are two types of fertilization: internal and external. Organisms that use external fertilization release many eggs
into bodies of water. Therefore, there is no parental care for the eggs. Eggs that are fertilized internally are well protected
and release a limited number of eggs inside the female.
Once eggs are fertilized, zygotes develop into embryos. Development can occur internally or externally. Organisms that
develop internally rely on the mother for nutrients and gas exchange. Organisms that develop externally get nutrition from
the yolk sac.
Questions:
1. Describe fertilization.
2. Why does a human zygote consist of 46 chromosomes?
3. Identify the two types of fertilization.
4. Contrast internal and external fertilization in two ways.
5. Identify the two types of development.
6. Contrast internal and external development in two ways.
7. Identify two organisms that use internal and external fertilization.
8. Identify two organisms that use internal and external development.
Fertilization and Development Reading ISA (A)
Directions: Read the text below. Use textual evidence to HELP you answer the questions ON THE LOOSELEAF BELOW.
Fertilization is the process of a sperm cell joining with an egg cell or ovum. Fertilization usually occurs in the
upper portion of an oviduct near the ovary. In humans, sperm and eggs normally contain 23 chromosomes. Fertilization
brings these chromosomes together producing a fertilized egg, or zygote, that contains 46 chromosomes.
There are two types of fertilization: internal and external. Organisms that use external fertilization release
(5) many eggs into bodies of water. Therefore, there is no parental care for the eggs. Eggs released from organisms that
use internal fertilization are well protected and release a less eggs inside the female.
Once eggs are fertilized, zygotes develop into embryos. There are two types of development: internal and
external. In organisms that use internal development, the embryo develops inside the uterus and relies on the
MOTHER for nutrients and gas exchange. In organisms that use external development, embryos get nutrition from
(10) the yolk sac.
Questions:
1. What is fertilization? (1)
3. What are the two types of fertilization? (4)
5. What are the two types of development? (7 – 8)
2. Why does a human zygote have of 46 chromosomes? (2 – 3)
4. What is a difference between internal and external fertilization? (4 – 6)
6. What is the difference between internal and external development? (8 – 10)
7. What in ONE organism that uses internal fertilization and ONE organism that uses external fertilization?
8. What in ONE organism that uses internal development and ONE organism that uses external development?
Fertilization and Development Reading ISA (A)
Directions: Read the text below. Use textual evidence to HELP you answer the questions ON THE LOOSELEAF BELOW.
Fertilization is the process of a sperm cell joining with an egg cell or ovum. Fertilization usually occurs in the
upper portion of an oviduct near the ovary. In humans, sperm and eggs normally contain 23 chromosomes. Fertilization
brings these chromosomes together producing a fertilized egg, or zygote, that contains 46 chromosomes.
There are two types of fertilization: internal and external. Organisms that use external fertilization release
(5) many eggs into bodies of water. Therefore, there is no parental care for the eggs. Eggs released from organisms that
use internal fertilization are well protected and release a less eggs inside the female.
Once eggs are fertilized, zygotes develop into embryos. There are two types of development: internal and
external. In organisms that use internal development, the embryo develops inside the uterus and relies on the
MOTHER for nutrients and gas exchange. In organisms that use external development, embryos get nutrition from
(10) the yolk sac.
Questions:
1. What is fertilization? (1)
3. What are the two types of fertilization? (4)
5. What are the two types of development? (7 – 8)
2. Why does a human zygote have of 46 chromosomes? (2 – 3)
4. What is a difference between internal and external fertilization? (4 – 6)
6. What is the difference between internal and external development? (8 – 10)
7. What in ONE organism that uses internal fertilization and ONE organism that uses external fertilization?
8. What in ONE organism that uses internal development and ONE organism that uses external development?
Fertilization and Development Reading ISA (A)
Directions: Read the text below. Use textual evidence to HELP you answer the questions ON THE LOOSELEAF BELOW.
Fertilization is the process of a sperm cell joining with an egg cell or ovum. Fertilization usually occurs in the
upper portion of an oviduct near the ovary. In humans, sperm and eggs normally contain 23 chromosomes. Fertilization
brings these chromosomes together producing a fertilized egg, or zygote, that contains 46 chromosomes.
There are two types of fertilization: internal and external. Organisms that use external fertilization release
(5) many eggs into bodies of water. Therefore, there is no parental care for the eggs. Eggs released from organisms that
use internal fertilization are well protected and release a less eggs inside the female.
Once eggs are fertilized, zygotes develop into embryos. There are two types of development: internal and
external. In organisms that use internal development, the embryo develops inside the uterus and relies on the
MOTHER for nutrients and gas exchange. In organisms that use external development, embryos get nutrition from
(10) the yolk sac.
Questions:
1. What is fertilization? (1)
3. What are the two types of fertilization? (4)
5. What are the two types of development? (7 – 8)
2. Why does a human zygote have of 46 chromosomes? (2 – 3)
4. What is a difference between internal and external fertilization? (4 – 6)
6. What is the difference between internal and external development? (8 – 10)
7. What in ONE organism that uses internal fertilization and ONE organism that uses external fertilization?
8. What in ONE organism that uses internal development and ONE organism that uses external development?