How Is The Stigma Adapted To Capture And Hold Pollen

Question: Does a flower produce ovules or pollen grains in greater numbers? Explain why this would be important in terms of reproductive success.

Answer: Pollen grains are produced in greater amounts. Many pollen grains get lost because they are so small before they reach female reproductive parts.

Question: What are some adaptations of flower petals to help attract pollinators?

Answer: color, aromas, and shape

Question: How is the stigma of your flower adapted to capture and hold pollen?

Answer: The stigma becomes moist and sticky at maturation allowing for the pollen to be captured. The top of the pistil being enlarged offers a greater surface area for pollen to land on as well.

Question: Where does pollination and fertilization occur?

Answer: Pollination is when pollen lands on the stigma. This must take place before fertilization can occur. Fertilization is when the nucleus of the sperm fuses with the nucleus of the egg in the ovule of the ovary of a flower.

Question: Explain the differences between pollination and fertilization.

Answer: Pollination is the transfer of pollen from the anther to the stigma of a plant. Fertilization is the union of sex cells to form a new organism.

Question: In which part of the male reproductive organ are the pollen grains made?

Answer: The stamen is the male reproductive organ.

Question: In which part of the female reproductive organ are the egg cells made?

Answer: Ovule

Question: By which nuclear process are the gametes formed?

Answer: meiosis

Question: How do the sperm nuclei in a pollen grain reach the egg nucleus in an ovule?

Answer: Pollen grain germinates by growing a long tube down into the pistil after landing on the sticky part of the stigma. Sperm nucleus is in pollen grain and egg nucleus is in ovule of pistil.

Question: Which part of the flower becomes the seed?

Answer: ovule