Parts of the microscope are:
1. Eyepiece or ocular. This what you look through at the top of the microscope.
2. Eyepiece tube. Holds the eyepiece in place
3. Objective lens. The primary optical lenses on a microscope ranging from 4x to 100x magnification power.
4. Nosepiece. Houses the objective.
5. Coarse and fine focus knobs. They are used to focus the microscope.
6. Stage. This is a ledge where the specimen to be observed is placed.
7. Stage clips. Clips on the stage that hold e.g. a glass slide on which the specimen has been mounted.
8.Aperture. The hole in the stage through which transmitted light from the base reaches a specimen placed on the stage for observation.
9. Illuminator. This is the light source for a microscope usually located in the base of the microscope.
10. Condensor. Is used to collect and focus the light from the illuminator on to the specimen. It is located immediately under the stage.
11. Iris diaphragm. This is a flexible structure that controls the amount of light reaching the specimen and is located above the condenser and below the stage.
12. Condensor focus knob. Moves the condenser up and down to control the light focus on the specimen.
13. Base. This is the foot of the microscope and supports the whole frame of the microscope.
Has normal (2n) amount of DNA;
Has twice (4n) the normal amount of DNA
Answer:
Monocots differ from dicots in four distinct structural features: leaves, stems, roots and flowers. ... Whereas monocots have one cotyledon (vein), dicots have two. This small difference at the very start of the plant's life cycle leads each plant to develop vast differences.
hope it helps
Answer:
The correct answer would be - 16 chromosomes or 8 chromosome pairs per cell.
Explanation:
In the body of an organism, all the somatic cells have the same number of chromosomes irrespective of their location in the body which is 2n or diploid. Liver cells would also have 2n number of chromosomes. The diploid number of cells are produced by the mitosis type of cell division or by fusing the sex cell that are egg cells and sperm cells. These sex cells are haploid of n number of cells or haploid.
If a sex cell as given in question sperm cells have 8 chromosomes then the liver cell would be 2n because sex cells after forming a zygote develooped to all other somatic cells including liver cells.
Sex cell = n = 8 chromosomes
liver cell - 2n = 2×8 = 16 chromosomes.
