Huh?
What is it you are trying to ask?
The part of the stem that gives rise to this pattern is : B. xylem
xylem is responsible in transporting water and nutrients. It die after a year or so and will leave the concentric pattern as it die
hope this helps
Cell tracking shows that axolotl cells in a regrowing leg retain distinct roles. ... Salamanders have the ability to regrow amputated limbs. These cells then divide and differentiate into the tissue types needed. The adult tissues are reprogrammed to make these blastema stem cells
Answer:
The correct answer is option - A. Gametophyte, C. spore, and D. sperm.
Explanation:
The egg cell of a plant is haploid in the cell which means it has only one set of chromosomes. The haploid cells arise from the meiosis cell division in parent sex cells. These parent cells are divided into four cells with half of the chromosome number in comparison to the parent cells.
The gametophyte, spore, and sperm all three are the product of the meiosis division and are haploid in number.
Thus, the correct answer is option - A, gametophyte, C. spore and D. sperm.
The variation may already exist within the population, but often the variation comes from a mutation, or a random change in an organism's genes.
