Depression
What will be an ideal response?
Bowl or groove like cut out that can serve as passageway for vessels and nerves, or plays a role in joints.
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All vertebrates except ____ have a two-circuit circulatory system
a. fish b. mammals c. birds d. amphibians e. reptiles
African lungfish, which are often found in small, stagnant pools of fresh water, produce urea as a nitrogenous waste. What is the advantage of this adaptation?
A) Urea takes less energy to synthesize than ammonia. B) Small, stagnant pools do not provide enough water to dilute the toxic ammonia. C) The highly toxic urea makes the pool uninhabitable to potential competitors. D) Urea makes lungfish tissue hypoosmotic to the pool.
Answer the following statements true (T) or false (F)
1. All materials passing from one hyphal cell to another must diffuse across the septal wall. 2. Conidia are sexual spores produced by mushrooms. 3. Lichens are monophyletic. 4. Many kinds of ascomycetes and basidiomycetes have lost the ability to reproduce sexually.
What feature enables the paramecium to move?
a. nucleus b. cilia c. flagella d. pseudopodia e. contractile vacuole