Grade 12 Biology: Sexual Reproduction
A Grade 12 Biology worksheet covering key concepts of sexual reproduction, including gamete formation, fertilization, and embryonic development.
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Grade 12 Biology: Sexual Reproduction
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Read each question carefully and provide your best answer. Some questions may require critical thinking and application of biological concepts related to sexual reproduction.
1. Which of the following is NOT a primary advantage of sexual reproduction over asexual reproduction?
Increased genetic variation
Faster population growth in stable environments
Enhanced adaptability to changing environments
Removal of deleterious mutations over generations
2. Which process directly results in the formation of gametes?
Mitosis
Meiosis
Fertilization
Differentiation
3. The fusion of male and female gametes is called .
4. In humans, the process of meiosis produces haploid cells containing chromosomes.
5. Crossing over occurs during Meiosis I and contributes to genetic variation.
True
False
6. External fertilization is common in terrestrial animals.
True
False
7. Briefly explain the significance of meiosis in sexual reproduction.
8. Describe the main differences between spermatogenesis and oogenesis.
Use the words below to complete the sentences.
9. Sexual reproduction involves the fusion of specialized reproductive cells called .
10. After , the resulting diploid cell is known as a .