Robert Hooke was the first scientist to discover cell. This discovery was made possible by the use of microscope which he invented. With this microscope, Robert examined a cork and noticed pores which filled the entire volume of the thin slices of cork; he called the pores cells. This discovery was made in January 1653.
Answer: A: Pine, Cedar and Mango.
B: Pine and Cedar
C: Mango, Cedar and Elm
D: Pine and Cedar
Explanation: Evergreens plants always have there leaves on regardless of the season, because their roots go very deep into the soil getting water and nutrients far below the levels other tap roots can go, they are mainly found in the rain forest region that have abundance of water. Example, Mango
Deciduous trees are usually found at desert places that dont always have water, so they lose their leaves during etreme weather to reduce the rate of evaporation of water on its surface. Example, Maple.
Hardwood: These are flowering plants. they usually have broad leaves and nuts. example, Mahogany.
Conifers: These are cone bearing seed plants. they are perennial and woody plants. Example Pine.
Answer:
They have uncoiled to form long, thin strands.
Explanation:
Chromosomes are present in cell nucleus and consist of chromatin. Genes are present in linear order on chromosomes. The chromosomes become visible under the microscope as distinct structures during cell division. When cells are not dividing, the chromosomes decondense to loose their individuality and make the mass of chromatin.
Chromatin is complex of DNA and packing proteins. As the cells enter the prophase stage of cell division, condensation of chromatin occurs and individual chromosomes become visible under microscope. Before that (during interphase), chromosomes are not visible as they are present in decondensed form.
<span>It produces progesterone.The ovaries produce the female hormones estrogen and progesterone, in addition to a minute quantity of testosterone. Each ovary has thousands of follicles competent of generating eggs for fertilization. The brain cause the ovaries to develop a single mature egg cell for potential fertilization.</span>
