A. it has uracil
We know the sequence is RNA because it contains uracil.
Answer:
Four innovations are central nervous system, eyes, bilateral and hermaphrodites.
Explanation:
Innovations found in an ancient flatworm were the presence of central nervous system means head and a brain. The head had eyes which is the first in the animal world. Their body is bilateral means equally divided into two parts. They are also hermaphrodites means having male and female on a single organism which was not present at that time of animals.
Label i shows the organelle chloroplast
A sperm cell and an egg cell fuse to form which structure is called a <span>zygote. The zygote is a product of fertilization of two gametes: egg cells for female and sperm cells for males. In this process,the DNA of both cells is passed to the offspring to form a new individual. </span>
