Which of the following statement is incorrect wrt cockroach?

Cockroaches being an insect excrete using malpighian tubules. On the other hand, a prawn is a crustacean. It excretes using green glands that help in the removal of nitrogenous waste from its body. Thus, this statement is incorrect.

Which of the following is correct wrt cockroach?

Nitrogenous excretory product is uric acid. So, the correct answer is ‘The food is grinded by mandibles and gizzard‘.

Which of the following statement is correct regarding excretory system of cockroach?

Correct Answer : C.

Cockroaches absorb nitrogenous waste products and convert them into uric acid which is excreted out-through hindgut. Hence they called as uricotelic.

Which of the following is incorrect in cockroach and prawns?

Answer: (a) The statement (a) is incorrect because Malpighian tubules are excretory structures inmost of the insects, including cockroach, but green glands perform excretory functions in crustaceans like prawns, whereas all the other statements are true.

Which type of image is found in eye of cockroach?

Step by step answer:The eye of cockroach is the compound type and is composed of many units called ommatidium. Insects have two kinds of ommatidia. The images formed in nocturnal insects like a cockroach in which the retinulae are present deep below the vitrellae and crystalline cone.

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What is digestive system of cockroach?

The digestive system consists of an alimentary canal and digestive glands. The alimentary canal of cockroach is divided into foregut, midgut, and hindgut. the foregut opens into a gap, where undigested food is temporarily stored. … The gastric sacks contain bacteria that the cockroach uses to digest its food.

Is cockroach an omnivore?

Cockroaches are omnivorous scavengers that devour keratin. They will bite human flesh in both the living and dead with resultant injury.

What is mandible in cockroach?

Hint: Cockroaches have mandibles. They are a pair of short structures situated on either side of the mouth. They are triangular in shape and hard due to the presence of a chitin layer. … The cockroach’s mouth consists of a pair of appendages. The function of mandibles is to grasp, crush, or cut the food.

Which one of the following statement is incorrect Mesoglea is present in between?

Animal Kingdom. Which one of the following statements is incorrect? Mesoglea is present in between ectoderm and endoderm in Obelia.

Do prawns have malpighian tubules?

Malpighian tubules are excretory structures in most insects, including cockroaches, but in crustaceans such as prawns, green glands conduct excretory functions, whereas all other statements are true.

How many eyes does a cockroach have?

They have three simple eyes known as ocelli on their forehead and two large, sessile, black, kidney-shaped structures located on the dorsolateral sides of the head capsule. – The group of ommatidia together constitutes compound eyes.

What would have happened if cockroach did not had gizzard?

The gizzard in cockroach is a spherical organ which has chitinous teeth and bristles. … If the cockroach did not have a gizzard, the food will not be crushed into small particles and unfiltered food will enter the hindgut. Thus, digestion will be affected in the absence of a gizzard.

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What is gizzard in cockroach?

Gizzard of cockroach helps in the crushing of food and is considered to be a part of digestive system. The crop opens into a short, muscular organ, the gizzard or the proventriculus. It is present in a number of animals like birds, earthworms etc.

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