Allison is growing a few beds of sunflowers and giving each group different amounts of water for a period of five weeks to see if it affects their growth. All of the groups receive the same amount and type of soil, and receive the same amount of sunlight. She gives the first sunflower group 300 extra milliliters of water a day. The second receives 200 extra millilitres of water a day and the third bed of sunflowers receives no extra water and obtains water only natural ways. Allison records the heights of the sunflowers after each week. what is the: •IV: •DV: •Constants: •Control:

Sandra is growing mums in her backyard and wants to determine how much water she should give the plants to produce the most flowers. Plant A receives only rainwater and is given no additional water. Plant B receives rainwater and an additional cup of water per day. Plant C receives rainwater and an additional two cups of water per day. All mums are given the same amount of sunlight and fertilizer. a. Control Group

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation: