Fertilization
Biology ⇒ Reproduction and Development
Fertilization starts at 7 and continues till grade 12.
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Describe the role of the pollen tube in plant fertilization.
Describe what happens to the zygote after fertilization.
Explain the main difference between internal and external fertilization.
Explain why external fertilization is common in aquatic animals.
Explain why fertilization is important for sexual reproduction.
In a certain fish species, eggs and sperm are released into the water at the same time. What type of fertilization is this?
In external fertilization, where does the fusion of gametes occur?
In a certain fish species, eggs and sperm are released into the water at the same time. What type of fertilization is this?
Which of the following animals uses external fertilization? (1) Frog (2) Dog (3) Cat (4) Cow
Which of the following best describes internal fertilization? (1) Fusion of gametes inside the body (2) Fusion of gametes outside the body (3) Formation of gametes (4) Growth of embryo
Which of the following is a correct sequence of events? (1) Fertilization → Zygote → Embryo (2) Embryo → Zygote → Fertilization (3) Zygote → Fertilization → Embryo (4) Embryo → Fertilization → Zygote
Which of the following is a disadvantage of external fertilization? (1) High chance of gamete loss (2) High survival rate (3) Protection from environment (4) Less competition
After fertilization, the zygote divides by a process called ______.
Fertilization is the fusion of ______ and ______.
Fill in the blank: In animals, fertilization usually occurs between a ______ and an ______.
Fill in the blank: In plants, the male gamete is found in the ______.
True or False: Fertilization always takes place inside the female body.
True or False: Fertilization can occur without gametes.
True or False: Fertilization restores the diploid number of chromosomes in the zygote.
True or False: Only animals can undergo fertilization.
