Question 1

What type of mouthparts do you observe in cockroach?

Accepted Answer

Chewing type.

Question 2

What is the function of colleterial glands in cockroach?

Accepted Answer

Helps in the formation of ootheca.

Question 3

How many pairs of wings are found in cockroach? What is the first pair of wings is called?

Accepted Answer

Two pairs of wings; the first pair of wings is known as elytra (or tegmina).

Question 4

Into how many parts the body of cockroach is distinctly divisible?

Accepted Answer

Three parts, viz., head, thorax and abdomen.

Question 5

What will you call a young hatching of cockroach?

Accepted Answer

Nymph.

Question 6

Which of the two parts in cockroach are fundamentally similar in structure?

Accepted Answer

C.  Maxillae and legs.Explanation : Maxillae and legs are fundamentally similar structure in cockroach. Maxillae consists of 3 parts  like protopodite, endopodite and  expedite. Legs are 3 pairs and each consists of five parts.So, the correct option is C.

Question 7

What type of body cavity is found in cockroach?

Accepted Answer

Haemocoel

Question 8

How are cockroaches and rats harmful to humans?

Accepted Answer

Cockroaches and rats are harmful to humans in the following ways:Rats consume grains and other food products. They carry pathogens. Rat-fleas is a pathogen that inhabits on the skin of the rat and carries the plague germs.Cockroaches are known to perish food, cloth and paper. They too carry various pathogens as they dwell in drains.

Question 9

Periplaenta americana differs from Blata orientalis in having

Accepted Answer

Periplaneta americana (American cockroach) differs from Blata orientalis (Oriental cockroach) in having well-developed wings. The organism bears two pairs of wings. The forewings, known as tegmina arises from mesothorax and is dark and opaque. The hind wings arise from metathorax and are used in flight. Oriental cockroach appearing to be wingless at a casual glance but has two very short and vestigeal wings just below the head. So, the correct answer is option A.

Question 10

Which one of the following statements is incorrect ?

Accepted Answer

In cockroaches and prawns excretion of waste material occurs through malphigian tubules and not through flame cells. Other excretory structures in cockroach are fat bodies, nephrocytes, cuticle and uricose glands.So, the incorrect statement is 'In cockroaches and prawns excretion of waste material occurs through flame cells'

Important questions on Morphology Of Cockroach

What type of mouthparts do you observe in cockroach?

What is the function of colleterial glands in cockroach?

How many pairs of wings are found in cockroach? What is the first pair of wings is called?

Into how many parts the body of cockroach is distinctly divisible?

What will you call a young hatching of cockroach?

Which of the two parts in cockroach are fundamentally similar in structure?

Anal styles and labrum

Wings and anal cerci

Maxillae and legs

Mandibles and antennae

What type of body cavity is found in cockroach?

How are cockroaches and rats harmful to humans?

Periplaenta americana differs from Blata orientalis in having

Well developed wings

Wings absent

Only first pair wings developed

Second pair wing developed

Which one of the following statements is incorrect ?

In cockroaches and prawns excretion of waste material occurs through flame cells.

In Ctenophora, locomotion is mediated by comb plates

In Fasciola flame cells take part in excretion

Earthworms are hermaphrodites and yet cross fertilization take place among them.

More important questions