Stratum spinosum and stratum basale are together called-

Correct Answer: D

Rationale: The correct answer is D: Germinativum. The stratum spinosum and stratum basale are together known as the stratum germinativum because they are the layers of the epidermis where cell division and renewal occur. The stratum lucidum is a clear layer found only in thick skin, stratum corneum is the outermost layer of the epidermis composed of dead skin cells, and stratum granulosum is the layer where keratinocytes undergo transformation. These choices are incorrect as they do not specifically refer to the layers responsible for cell division and renewal in the epidermis.

Correct Answer: A

Rationale: The correct answer is A because vibrissae, also known as whiskers, are essential for a rabbit's navigation and sensing its surroundings. Without whiskers, a rabbit may struggle to move freely and may become disoriented. Choice B is incorrect as speed is not solely determined by the presence of vibrissae. Choice C is incorrect as the rabbit may still attempt to move even without vibrissae. Choice D is incorrect as removing vibrissae will have an impact on the rabbit's mobility and spatial awareness.

Correct Answer: D

Rationale: The correct answer is D: Lysozyme. Lysozyme is an anti-bacterial enzyme found in tears that helps protect the eyes from infections. It works by breaking down the cell walls of bacteria, thus preventing their growth. Lacrimin (A) is a protein involved in tear production, not an anti-bacterial enzyme. Interferon (B) is a protein produced by the immune system to fight viruses, not found in tears. Pepsin (C) is a digestive enzyme produced in the stomach, not present in tears. Therefore, the correct answer is D because lysozyme is the specific anti-bacterial enzyme found in tears.

Correct Answer: C

Rationale: The correct answer is C: Hippopotamus. Sudorific glands are sweat glands responsible for regulating body temperature. Hippopotamuses have sudorific glands confined to their external ears, which help them cool down. Deer and kangaroos do not have sudorific glands in their external ears. Choice D, "Acting as receptor organ," is vague and unrelated to the function of sudorific glands.

Correct Answer: D

Rationale: The long and hard hairs on a rabbit's upper lip, known as whiskers, serve multiple purposes. Firstly, they provide tactile stimulation by helping the rabbit sense its surroundings. Secondly, they aid in pressure stimulation, helping the rabbit navigate through tight spaces. Finally, they play a role in temperature stimulation by detecting changes in the environment. Therefore, the correct answer is D, "All of the above," as whiskers serve all these functions. Choices A, B, and C are incorrect because they each represent only one aspect of the whiskers' function, while the correct answer encompasses all of them.