Question

which of the following statements best describes the outcome of fertilization? fertilization is deliberate, resulting in selective gamete fertilization. fertilization is random, allowing for the possibility that not all gametes are fertilized. fertilization is predetermined, ensuring all gametes are fertilized. fertilization is controlled, ensuring each gamete is fertilized in a specific sequence.

Explanation:

To determine the correct statement about fertilization, we analyze each option:

• The first option claims fertilization is deliberate and selective, but fertilization (e.g., in nature, like in plants or animals) is not a deliberate, selective process in the way described. Gametes don't "choose" in a controlled, deliberate manner.
• The second option states fertilization is random, and not all gametes are fertilized. This aligns with biological reality: in many organisms, there are more gametes (sperm or pollen, eggs or ovules) than will successfully fertilize, and the process of which gametes meet and fuse is random (e.g., sperm competition in animals, or random pollen landing in plants).
• The third option says fertilization is predetermined and all gametes are fertilized. This is incorrect because, as mentioned, not all gametes are fertilized (e.g., many sperm never reach an egg, many pollen grains don't fertilize an ovule), and it's not predetermined which ones will succeed.
• The fourth option claims fertilization is controlled and each gamete is fertilized in a specific sequence. There's no specific sequence dictating which gamete fertilizes which, and it's not a highly controlled process in terms of a set sequence for each gamete.

Answer:

B. Fertilization is random, allowing for the possibility that not all gametes are fertilized.