Question

1.Pine pollen grains often have air sacs.*

Answer 1

Answer:

1 true

Air-filled sacs in the pollen grains of pine trees allow pollen to travel farther through the air. ... Each pollen grain is attached to two or three air-filled sacs, or sacci, which develop from the outer layer of the pollen

2 true

process of meiosis involves two divisions of the genetic material. The first division is called the reduction division – or meiosis I

3 false

When a grain of pollen reaches the stigma, it creates a pollen tube for the sperm to journey down the style and fertilize the ovule; fertilized ovules become seeds. Fertilization is the death of the flower, as the petals drop or wither at this point and the ovary starts to enlarge and ripen into what we know as fruit.