They are hydrophobic and insoluble in water
Answer:
Step 1: Pollination
In general, male gametes are contained in pollen, which is carried by wind, water, or wildlife (both insects and animals) to reach female gametes. The pollen is deposited on a plant's stigma, which is part of the pistil (the elongated part of a flower extending from the ovary). This process is called pollination.
Step 2: Germination
Within a few minutes, pollen tubes begin growing, or germinating, toward the egg cell. These tubes will provide a path for the sperm carried in the pollen to reach the egg.
Step 3: Penetration of the Ovule
The pollen tubes penetrate the ovule, which contains the female gametes.
Step 4: Fertilization
Sperm travel down the pollen tubes and fertilize an egg. Most angiosperms undergo double fertilization, where both an egg and the polar nuclei in the embryonic sac are fertilized.
Explanation:
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Answer:
C. Snowshoe hares change their fur from white to brown to match their summer habitats.
Explanation:
The gene to change the fur color is passed on generation to generation, so the hares can survive in both winter and summer time.
A group of people are building a house. They have a large package of building materials that needs to be moved. A block and tackle, a type of pulley, is used to pull the material up so it can be set in the back of a truck.