Question

e. Black-footed ferrets are the only main predator of prairie dogs. Check Question 11 Tries remaining Points out of 1.00 P Flag question In the case of two competing barnacle species, the larger species Semibalanus is able to eliminate individuals of the smaller species Chthamalus through interference competition over its entire fundamental niche by overgrowing or dislodging them as they grow larger. Which of the following could be an explanation (reasonable hypothesis) that is sufficient to fully explain why Chthamalus evades competitive exclusion within the high-tide zone? Select one: a. Chthamalus is competitively excluded in the low-tide zone. b. The fundamental niche of Semibalanus extends over the entire tidal zone (both high and low-tide) c. The fundamental niche of Chthamalus extends over the entire tidal zone (both high and low-tide), d. The high-tide zone is outside the range of tolerance for Semibalanus. e. Semibolanus is outcompeted by Chthamalus in the high-tide zone. Check Question 12 1 x 0 The NEXT TWO cuestions refer to the following figure NTP W

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Answer 1

Answer: “D” high tide zone is outside the range of tolerance for semibalanus

High tide zone is also called as intertidal zone, it is submerged with water during high tide and expose to air during low tide, hence this zone will have range of low to high temperatures ( due to exposure to sunlight). The organisms in this zone should be able to tolerate wet as well as very dry conditions.

Semibalanus and chthamalus is an example competitive exclusion.

Chthamalus evades competition in the high tide zone, as high tide zone is too hot for the survival of semibalanus.

Semibalanus is intolerant to desiccation and heat, and chthamalus on other hand is extremely resistant to heat and desiccation, hence chthamalus can evade competitive exclusion by semibalanus in high tide zone