Answer the following question given this paragraph: Amphibians have moist skin without scales. The skin is kept moist by mucus, which is secreted by mucous glands. In some species, the mucous glands also secrete toxins that make the animal poisonous to predators. The blue poison-dart frogs in Figure below are a good example. The toxin in their mucus is used by native people in South America to poison the tips of their hunting arrows. Q: Which group of species is defined as having moist skin without scales? Choices: - fish - mammals - reptiles - amphibians A:
amphibians
(Question)
Answer the following question given this paragraph: Insectivorous Plants An insectivorous plant has specialized leaves to attract and digest insects. The Venus flytrap is popularly known for its insectivorous mode of nutrition, and has leaves that work as traps (Figure 31.16). The minerals it obtains from prey compensate for those lacking in the boggy (low pH) soil of its native North Carolina coastal plains. There are three sensitive hairs in the center of each half of each leaf. The edges of each leaf are covered with long spines. Nectar secreted by the plant attracts flies to the leaf. When a fly touches the sensory hairs, the leaf immediately closes. Next, fluids and enzymes break down the prey and minerals are absorbed by the leaf. Since this plant is popular in the horticultural trade, it is threatened in its original habitat. Q: What helps an insectivorous plant attract and digest insects? Choices: - specialized flowers - special seeds - spines - specialized leaves A:
(Answer)
specialized leaves
Ques: Answer the following question given this paragraph: Figure 13.6 Bacteria are divided into two major groups: Gram-positive and Gram-negative. Both groups have a cell wall composed of peptidoglycans: In Gram-positive bacteria, the wall is thick, whereas in Gram-negative bacteria, the wall is thin. In Gram-negative bacteria, the cell wall is surrounded by an outer membrane. Q: Gram-positive and gram-negative bacteria are distinguished by thickness of what? Choices: - cell membrane - cell weight - cell length - cell wall A:
Ans: cell wall
(Q).
Answer the following question given this paragraph: Circadian rhythms are regular changes in biology or behavior that occur in a 24-hour cycle. In humans, for example, blood pressure and body temperature change in a regular way throughout each 24-hour day. Animals may eat and drink at certain times of day as well. Humans have daily cycles of behavior, too. Most people start to get sleepy after dark and have a hard time sleeping when it is light outside. In many species, including humans, circadian rhythms are controlled by a tiny structure called the biological clock . This structure is located in a gland at the base of the brain. The biological clock sends signals to the body. The signals cause regular changes in behavior and body processes. The amount of light entering the eyes helps control the biological clock. The clock causes changes that repeat every 24 hours. Q: What do you call the regular changes in biology or behavior that occur in a 24-hour cycle? Choices: - cognitive rhythms - variable rhythms - sleep rhythms - circadian rhythms A:
(A).
circadian rhythms
Ques:Answer the following question given this paragraph: Q: When the ground absorbs the water and it settles below the surface it is called what? Choices: - wastewater - glacier - precipitation - groundwater A:

Ans:groundwater
Answer the following question given this paragraph: There are only about 6200 known species of amphibians. They are placed in three orders: frogs, salamanders, and caecilians. Table below shows a picture of an amphibian in each order. It also provides additional information about the orders. Q: What are the 3 orders of amphibians? Choices: - bees, caddisflies, antilions - monotremata, artiodactyla, rodentia - hagfish, lampreys, acanthodii - frogs, salamanders, caecilians A:
frogs, salamanders, caecilians