Five words are shown below: Labium, Maxillae, Labrum, Mandibles and Antennae These words can be used in the spaces P, Q, R, S, and T to complete the sentence below. Cockroaches are omnivorous and can eat any kind of organic matter. They search for their food by their ..P.. Their digestive system is tubular, having a straight slightly coiled digestive tube opening at both the ends. Hence, the digestive system is complete. The mouth lies at the base of the pre-oral cavity which is bounded by the mouth parts, ..Q.. (upper lip), ..R.. (lower lip), mandibles, and maxillae. The ..S.. pick up and bring food to the ..T.. for mastication.
Correct answer: B. Option B
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
Roaches use their antennae to locate food and estimate the distance and height of any obstacles in front of them. The labrum is also known as the upper lip. It consists of a flattened cuticle and helps to hold the food in the correct position when the cockroach feeds. The labium is often called an insect's lower lip. The labium is positioned towards the back of the head and helps hold food in place when the insect feeds. Maxillae are used to hold and manipulate food so that it can be chewed or sliced by the mandibles. The function of mandibles is to grasp, crush, or cut the food (mastrication means to grind or crush (food) with or as if with the teeth). Using this information the only correct option is option B.
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About Digestion
The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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