chapter 9 mastery test a,
part c fill in the blank with the correct word from the word bank.
word bank
asexual identical meiosis mitosis sexual
21. __________ reproduction involves two parents.
22. asexual reproduction produces genetically __________ offspring.
23. a form of asexual reproduction is __________.
24. __________ reproduction involves one parent.
25. __________ is required for sexual reproduction.
part d write the answers to the following questions.
26. why must living organisms reproduce?
27. what is the period of rapid growth that occurs during adolescence called?
28. what is spontaneous generation?
29. what is the name of the chemical that stores information inside cells?
30. what is cell differentiation?

Question

Accepted Answer

### Part C
#### 21.
# Brief Explanations:
Sexual reproduction needs two parents (sperm and egg from different parents). So the word is "sexual".
# Answer:
sexual

#### 22.
# Brief Explanations:
Asexual reproduction (like binary fission, budding) makes offspring with the same genes as the parent, so "identical".
# Answer:
identical

#### 23.
# Brief Explanations:
Mitosis is a cell division for growth, repair, and asexual reproduction (e.g., in single - celled organisms). So a form of asexual reproduction is "mitosis".
# Answer:
mitosis

#### 24.
# Brief Explanations:
Asexual reproduction (e.g., bacteria dividing, plants budding) has only one parent. So the word is "asexual".
# Answer:
asexual

#### 25.
# Brief Explanations:
Meiosis makes gametes (sperm and egg) with half the chromosomes, needed for sexual reproduction (fertilization of gametes). So "meiosis" is required.
# Answer:
meiosis

### Part D
#### 26.
# Brief Explanations:
Organisms reproduce to continue their species. If they don't, the species would go extinct. Also, reproduction helps in population growth and passing on genetic information.
# Answer:
Living organisms must reproduce to ensure the continuation of their species (to prevent extinction), to pass on genetic information, and to maintain population levels.

#### 27.
# Brief Explanations:
The growth spurt during adolescence is the period of rapid physical growth, and it's called the "adolescent growth spurt".
# Answer:
The period of rapid growth during adolescence is called the adolescent growth spurt.

#### 28.
# Brief Explanations:
Spontaneous generation was a wrong idea that living things could come from non - living matter (e.g., maggots from rotting meat). But it's been disproven.
# Answer:
Spontaneous generation is the now - disproven idea that living organisms can arise spontaneously from non - living matter (for example, the idea that maggots could form from rotting meat without the involvement of living parents).

#### 29.
# Brief Explanations:
DNA (deoxyribonucleic acid) is the chemical in cells that stores genetic information. It has the instructions for cell functions, growth, and reproduction.
# Answer:
The chemical that stores information inside cells is deoxyribonucleic acid (DNA).

#### 30.
# Brief Explanations:
Cell differentiation is when unspecialized cells (like stem cells) become specialized cells with specific structures and functions (e.g., a stem cell becoming a nerve cell or a muscle cell).
# Answer:
Cell differentiation is the process by which unspecialized cells (such as stem cells) develop into specialized cells with distinct structures and functions (for example, a cell developing into a muscle cell or a nerve cell).

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QUESTION IMAGE

Question

Explanation:

Part C

21.

Answer:

22.