In male cockroach, 9,h sternum bears a pair of short, unjointed thread-like anal styles which are absent in female. Anal cerci and antennae are present in both male and female cockroaches.
Which of the following structures are found in female cockroach?
A pair of anal cerci are present in female cockroaches and have the presence of bifurcated sternum. Male cockroaches have two pairs of wings however, in females wings are vague or they have vestigial wings.
Which is absent in body of cockroach?
The blood of the cockroach is colorless due to the absence of haemoglobin which is the respiratory pigment in blood. Therefore, its blood lacks respiratory pigment or haemoglobin. Since now we are well aware of the circulation of blood in cockroaches therefore the correct answer to the question is respiratory pigment.
What is difference between male and female cockroach?
The body of female cockroach is relatively larger than the male body. The abdomen of male cockroach is slender as well as the last segment of the abdomen is pointed. The abdomen of the female cockroach is boat-shaped and the last segment is blunt. The wings of male cockroaches are larger.
Is pharynx absent in cockroach?
Which of the following is not incorrect? (1) The alimentary canal of cockroach is divided into two regions – foregut and midgut ron (2) Pharynx is absent in cockroach (3) Malpighian tubules help in the removal of excretory products from haemolymph (4) The hind gut is narrower than midgut and is differentiated into …
Where is Spermatheca present in cockroach?
So, the correct answer is ‘6th abdominal segment of female‘.
What is the structure of cockroach?
Anatomy of a cockroach
Its body is divided into three segments: head, thorax and abdomen. Cockroaches have a long pair of antennae that help them to pick up smells and vibrations. The antennae are connected to the head, which also includes the brain, strong mouthparts for scraping and chewing food and compound eyes.
Which structure is found in both male & female cockroach?
The 10th segment has a filamentous structure called the Anal cerci, in both male and female cockroach.
Which type of mouth parts are present in cockroach?
The mouth parts of cockroach are of biting and chewing type consisting of labrum (upper lip), a pair of mandibles, a pair of maxillae and a labium (lower lip). Within the oral cavity enclosed by the mouthparts, lies a median flexible lobe called hypopharynx (tongue).
Which is absent in male?
In males a pair of testis is present in the scrotal sac. Testes perform dual functions as a primary sex organ as well as an endocrine gland.
|Question||There are many endocrine glands in human body. Name the glands which is absent in male and the one absent in female.|
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Does cockroach have heart?
Cockroaches have multi-chambered hearts shaped like tubes that are much more resistant to failure than human hearts. … But instead of shaping the heart as a tube, they’ve created the chambers in a series of concentric spheres like an onion.
Is heart present in cockroach?
Note: The heart is the key organ for blood circulation. It is a muscular organ and helps in pumping blood. Cockroaches have a multi-chambered heart which has many chambers present in it.