Correct Answer: C. kill and make the leaf permeable

Correct Answer: D. temperature and rainfall

Explanation

a. (i) Table

(ii) Characteristic Features of respiratory surfaces

- Large surface area;

- Thin-walled/thin body surface;

- Moist surface;

- Well-ventilated surface;

- Permeable surface;

- Highly vascularised/network of capillaries present.

b. Diagram of respiratory organ/gill of Tilapia

Correct Answer: D. production of silk thread

Correct Answer: C. Amoeba

Correct Answer: D. coelenterata

Correct Answer: D. 16%

Explanation

In DNA, guanine pairs with cytosine and adenine pairs with thymine. In RNA, which does not have thymine, adenine pairs with uracil. Thus, if a sample contains 34% guanine, it also contains 34% cytosine. Together, the two make up 68% of the 100% total. The remaining 32% is divided evenly between the paired adenine and thymine molecules, so the DNA sample contains 16% percent each of adenine and thymine. 16% is the correct answer.

Correct Answer: C) Must produce fertile offspring

Explanation

This Biology question is asking about the characteristics that a biological species must possess. The question is a single choice question with four options to choose from. The options are: Live only in one place, Must interbreed, Must produce fertile offspring, and The mating between members must be free. The question requires us to choose the characteristic that a biological species MUST NOT possess. The correct answer is Option C: Must produce fertile offspring. This means that a biological species does not have to produce fertile offspring to be considered a species. However, the ability to produce fertile offspring is a common characteristic of most species. A biological species is a group of organisms that can interbreed and produce fertile offspring. This means that members of the same species can mate and produce offspring that can also mate and produce offspring of their own. It is important to note that a species does not have to live only in one place to be considered a species. Species can be found in different locations and can move around. The mating between members does not have to be free either. Some species have specific mating rituals, behaviors, or structures that facilitate mating. In summary, a biological species must possess the characteristic of being able to interbreed and produce fertile offspring. However, a species does not have to produce fertile offspring to be considered a species. The correct answer to this question is Option C: Must produce fertile offspring.

Correct Answer: D. rhizopus

Correct Answer: A. squirrels

Explanation

Arboreal animals are those animals that spend most of their life on trees. They feed, travel, play, and sleep on trees. 1. Koalas