Ques: Answer the following question given this paragraph: 24.2 Subphylum Urochordata The tunicates are located in this subphylum. Along with the subphylum Cephalochordata, these two subphyla make up the invertebrate chordates. Only the tunicate larvae have notochords, nerve cords, and postanal tails. Most adult tunicates are sessile, filter-feeders which retain their pharyngeal slits. Adult tunicates also develop a sac, called a tunic, which gives tunicates their name. Cilia beating within the turnicate cause water to enter the incurrent siphon. The water enters the body, passes through the pharyngeal slits, and leaves the body through the excurrent siphon. Undigested food is removed through the anus. Tunicates are hemaphrodites and can reproduce asexually through budding. In urochordates notochord is confined to larval tail. These lack cranium. These have an open type of circulatory system. Excretion is by neural gland,nephrocytes. Q: Adult tunicates also develop a sac, called a what? Choices: - hood - skirt - frill - tunic A:
Ans: tunic

Ques: Answer the following question given this paragraph: The outer ear catches sound waves and funnels them to the middle ear. The middle ear amplifies the sound waves and passes them to the inner ear. The inner ear changes the sound waves to electrical signals. The signals travel to the brain, which interprets the sounds. Q: Which part of the ear amplifies the sound waves? Choices: - eardrum - ear canal - cochlea - middle ear A:
Ans: middle ear

Ques: Answer the following question given this paragraph: Why is this picture of a cat so colorful? No cat looks like this to the human eye. The picture was taken with a special camera that senses infrared light. This is a form of energy given off by warm objects. Areas that appear yellow are the warmest, and areas that appear purple are the coolest. The picture shows that the cat's eyes are the warmest part of its head. Why can't people see images like this without a camera? The answer has to do with the wavelengths of infrared light. Its wavelengths are too long for the human eye to detect. In fact, the human eye can detect light only in a very narrow range of wavelengths, called visible light. You'll learn more about infrared light, visible light, and other forms of electromagnetic radiation in this chapter. Q: The entire range of light that can be seen by the human eye without aid is known as what kind of light? Choices: - white light - colored light - infrared light - visible light A:
Ans: visible light

Ques: Answer the following question given this paragraph: Q: What hormone affects developent and maturation in animals? Choices: - insulin - dopamine - melatonin - thyroid A:
Ans:
thyroid