Pat wants to observe mitotic cell division in an onion plant. Which part of the plant body is most suitable for this activity and why? A. young onion root tips because the root tip contains apical meristematic tissues
B. onion leaves because the cells are brightly colored and contain collenchyma
C. ovaries from onion flowers because they produce gametes

Construct an explanation about the function of mitosis for multicellular organisms

Use this dichotomous key for insect identification to identify the insect shown. 1. a. insect has one pair of wings. order diptera b. insect has two pairs of wings. go to #2 2. a. front wings thicker in texture than hind wings go to #3. b. front and hind wings are same texture throughout. go to #4 3. a. front wings are short order dermaptera b. front wings cover entire abdomen order coleoptera 4. a. wings with scale on all parts of their area. order lepidoptera b. wings without scales go to #5. 5. a. hind wings smaller than front wings. order ephemeroptera b. front and hind wings nearly equal in size. order odonata the insect pictured is in the order diptera. ephemeroptera. coleoptera. odonata.

Hairs that clean dirt out of the air in your nasal passages are called: a. sinus b. trachea c. cilia d. mucus