Grade 9 Science: Sexual Reproduction
This worksheet covers key concepts of sexual reproduction in grade 9 science, including definitions, processes, and structures involved in both animal and plant reproduction.
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Grade 9 Science: Sexual Reproduction
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Read each question carefully and provide your best answer. This worksheet covers topics related to sexual reproduction in living organisms.
1. Which of the following is NOT a characteristic of sexual reproduction?
Involves two parents
Offspring are genetically identical to parents
Involves the fusion of gametes
Leads to genetic variation
2. The male reproductive cell in animals is called a:
Egg
Sperm
Zygote
Pollen
1. The process of fusion of male and female gametes is called .
2. The primary male reproductive organ in humans is the .
3. The transfer of pollen grains from the anther to the stigma is known as .
1. Briefly explain the significance of genetic variation in sexually reproducing organisms.
2. Name two differences between external and internal fertilization.
1. All sexually reproducing organisms produce live young.
True
False
2. Meiosis is the process of cell division that produces gametes.
True
False
Examine the diagram of a flower below and answer the questions.
1. Identify the part of the flower labeled 'X' which produces pollen.
2. What is the function of the part labeled 'Y' (ovary)?
Use the words from the word bank to complete the sentences below.
1. The specialized reproductive cells, male and female, are called .
2. After , a single cell called a is formed.
3. The early stage of development of an organism from a zygote is known as an .