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Questions in biology

[Done] If the environment changed to a jungle, what color would you expect the rabbit to be? A. brown as the darker color would allow for camouflage in the shadows from predators B. white as there are several white flowers to blend in with C. white as the distinct coloration acts as a warning to other animals D. brown as this color females found more attractive to mate with

[Done] Answer the following questions. 1. How are plants useful to us? 2. How are plants used as food? 3. Why do we use spices in our food? 4. What are the other things we get from plants? Fill in the blanks with the correct words. 1. Mustard, groundnut, coconut etc. are _______ (fruits/oil). 2. Chilli, pepper, turmeric etc. are _______ (grains/spices). 3. Plants provide us food, clothes and _______ (shelter/flesh). 4. Wheat, millet, rice etc. are _______ (oil/grains). Give one word for each one of the following. 1. Cotton producing plant. 2. Sugar producing plant. 3. Mustard oil producing plant. 4. Matter used to make table. 5. Tea giving plant. Answer the following questions in short.

[Done] What is water's role in the nucleic acid? Water keeps the nucleic acids lubricated so they can perform their function more efficiently. Water keeps the nucleic acid hydrated. In plant and animal cells, most of the nucleic acids are found in the nucleus of cells, surrounded by water and charged metal ions.

[Done] Are composed of dense regular connective tissue that connect one bone to another. A. Tendons B. Ligaments

[Done] 1. Why do plants need a transport system? 2. Which substances need to be moved? 3. How does the transport system work in plants?

[Done] Which of the following terms has a prefix that refers to a number? A. Biconcave B. Macrophage C. Eosinophil D. Enzyme

[Done] Why did Gregor Mendel choose to use purebred plants in his experiments? A. They reproduce sexually. B. They exhibit only one form of a trait. C. They have a variety of traits. D. They reproduce asexually.

[Done] A scientist has four petri dishes of different sizes. Each dish contains a different number of bacteria. | | Population of Bacteria | Area ($mm^2$) | | :----- | :---------------------- | :------------- | | Dish A | 7,200 | 2,826 | | Dish B | 10,000 | 7,850 | | Dish C | 13,650 | 20,096 | | Dish D | 21,350 | 31,400 | Find each population density, to the nearest hundredth. Which statement is true? A. Dish A has the lowest population density. B. Dish C has the greatest population density. C. Dish A and Dish B have approximately the same population density. D. Dish C and Dish D have approximately the same population density.

[Done] What is the main function of the xylem in plants? How does water move from the roots to the leaves? What might happen to a plant if the phloem is damaged?

[Done] Identify the two main types of lymphocytes. Select one: A. B cells and E cells B. T cells and B cells C. A cells and E cells D. A cells and O cells E. C cells and T cells