why are plant and animal specimens usually stained with dyes before observes microscopes ?

Why are plants and animals so different ?

Why are plant and animal tissue different ?

Read the following statements regarding biological museums. (i) Biological museums are generally set up in educational institutes such as schools and colleges. (ii) Museums have collections of preserved plant and animal specimens for study and reference. (iii) Specimens are preserved in the containers or jars in preservative solutions. (iv) Insects are preserved in insect boxes after collecting. killing and pinning. (v) Larger animals like birds and mammals are usually stuffed and preserved. (vi) Skeletons of mammals are not allowed to be kept in museums. Whcih of the above statements is/are not correct ?

Which taxonomical aid has collection of preserved plant and animals specimens for study and reference?

Why are the leaves of a plant usually green ?

A smear of blood from a healthy individual is stained with a nuclear stain called hematoxylin and then observed under a light microscope. Which of the following cell type would be highest in number ?

A botanist treated some pollen grains with enzymes, chemical and high temperature to break exine. After that he observed under the microscope and found that exine is still intact. Why exine is not broken down?