Double fertilization occurs in_________?
Correct answer: D. Angiosperms
- A. All plants
- B. All seed plants
- C. Gymnosperms
- D. Angiosperms
Explanation
Double fertilization is characteristic of angiosperms: one sperm fertilizes the egg to form the zygote, while the other fuses with the polar nuclei to form the triploid endosperm. Students may choose all seed plants because both gymnosperms and angiosperms produce seeds, but gymnosperms do not show typical double fertilization.
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About Human Reproductive System
The human reproductive system includes the male and female organs that produce gametes, secrete sex hormones and support fertilization and development. Questions cover the testes, ovaries, reproductive ducts, menstrual and ovarian cycles, ovulation, fertilization, implantation, placenta formation and the roles of FSH, LH, oestrogen, progesterone and testosterone.
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