Answer:
on ed.gen.uity the answer is vestigial structure, hope this helps you :)
Explanation:
Answer:
(true)
Explanation: just took the test
The alternation of generations in the life cycle of a plant includes the diploid and haploid multicellular stages. diploid and haploid are copies of the chromosomes. The spores in the plant is unicellular and when they start dividing through mitosis, it produces identical cells. These identical cells are all haploid. Haploid stages contain one set of chromosome from either of the parent. These identical cells create a multicellular system called the gametophytes. A gametophyte is the haploid multicellular stage in the life cycle of a plant. The gametophyte makes the gametes. These gametes are responsible for sexual fertilization. It takes place when a sperm (male gametes) from the male fuses into the egg cell (female gametes) of the female. The formation of both male and female gametes creates a diploid zygote. Diploid stages contain one set of chromosome from each parent. This is where the sporophyte comes in. A sporophyte is the diploid multicellular stage in the life cycle of the plant. It now contains the two sets of chromosomes from each parent.
The type of cell division that produces gametes with half the normal chromosome number is the meiosis. Meiosis is the type of cell division used in sexual reproduction. It will occur in the testes and ovaries.
The number of growth rings
OB.
The thickness of the growth rings
O c.
The distance between the growth rings
Answer:
The answer to the question is A
Explanation:
The main indicator of a woody plants age like trees are the amount of rings inside, for example if a tree had twenty rings the tree would be twenty years old.
B) RNA was first discovered by James Watson and Francis Crick.
C) RNA contains the genetic blueprint for making protein molecules.
D) RNA molecules transmit the genetic information from the nucleus to the
Protein is a cell's main source of energy.