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Answer: Sexual reproduction
Explanation: Sexual reproduction, also known as meiosis, involves two organisms. Meiosis results in four haploid cells that are genetically different due to crossing over in prophase l, random fertilization, and the arrangements of chromosomes in metaphase l.
Answer:
When selecting the proper microscope to view a sample, you should choose a simple microscope to look at a fresh lung tissue (whole organ), a compound microscope to observe the patterns of cells on a slide, and an electron microscope to study individual organelles within cells in great detail.
Explanation:
Many types of microscopes are available, they are used by researchers, medical technicians and students on a daily basis upon their need.There are different kinds of microscopes.
The simple microscope is generally considered to be the first microscope ,it provides information about biological specimens. Its magnifying power ranges between 200 and 300 times. it can easily be used to magnify a whole tissue.
With two lenses, the compound microscope offers better magnification than a simple microscope,the second lens magnifies the image of the first is high magnification, which allows users to take a close look at objects too small to be seen with the naked eye, observing pattern of cells.
Electron microscopes uses electrons rather than light for image formation, creating a magnified image, and samples are scanned in a vacuum so they must be specially prepared. An electron microscope offers a high degree of both magnification and resolution, making it useful to study cells in detail.
Answer: a. Sepals, petals, stamen, carpels
Explanation:
The flowers are the main reproductive parts of the flower. These help in development of seeds which are the precursors of new plants on germination. The sepals, petals, stamen and carpels are the parts of the flower.
A sepal is the part of the flower which is of green color. It's function is to protect the flower in the bud stage and it often support the petal when the flower blooms.
Petals can be considered as the modified leaves. These surrounds the reproductive parts of the flowers. These are often brightly colored so as to attract the pollinators. All the petals of the flower combine to form the corolla.
A stamen can be define as the male reproductive organ of the flower. It has two parts the anther and the stalk. The anther produces the pollen grains and the stalk bears the anther on it's head.
Carpels are the female reproductive organs of the flower. It consists of an ovary, stigma and style.
