Describe the digestive system of a cockroach.
(N/A) The alimentary canal of a cockroach is divided into three regions: foregut,midgut,and hindgut.
$1$. Foregut: It includes the pharynx,esophagus,crop (for food storage),and gizzard (for grinding food).
$2$. Midgut: It is a narrow tube where digestion and absorption occur. At the junction of the foregut and midgut,there are $6-8$ blind tubules called hepatic caecae,which secrete digestive juices.
$3$. Hindgut: It is broader than the midgut and consists of the ileum,colon,and rectum. Malpighian tubules are present at the junction of the midgut and hindgut,which help in excretion.
$1$. Foregut: It includes the pharynx,esophagus,crop (for food storage),and gizzard (for grinding food).
$2$. Midgut: It is a narrow tube where digestion and absorption occur. At the junction of the foregut and midgut,there are $6-8$ blind tubules called hepatic caecae,which secrete digestive juices.
$3$. Hindgut: It is broader than the midgut and consists of the ileum,colon,and rectum. Malpighian tubules are present at the junction of the midgut and hindgut,which help in excretion.
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Read the following statements and choose the correct option:
$(A)$ The cockroach nervous system consists of a series of fused,segmentally arranged ganglia.
$(B)$ Ganglia are joined in the cockroach by paired longitudinal connectives on the ventral side.
$(C)$ The nervous system is present on the dorsal side of the cockroach.
$(D)$ In the cockroach,the total number of ganglia is nine.
$(A)$ The cockroach nervous system consists of a series of fused,segmentally arranged ganglia.
$(B)$ Ganglia are joined in the cockroach by paired longitudinal connectives on the ventral side.
$(C)$ The nervous system is present on the dorsal side of the cockroach.
$(D)$ In the cockroach,the total number of ganglia is nine.
Difficult
View SolutionGive the location of hepatic caeca in a cockroach. What is their function?
Medium
View SolutionWhich of the following statement$(s)$ is/are correct regarding the respiratory system of a cockroach?
$(i)$ It consists of a network of trachea that open through $12$ pairs of small holes called spiracles present on the lateral side of the body.
$(ii)$ Thin branching tubes carry oxygen from the air to all the parts.
$(iii)$ The opening of the spiracles is regulated by sphincters.
$(iv)$ Exchange of gases takes place at the tracheoles by diffusion.
$(i)$ It consists of a network of trachea that open through $12$ pairs of small holes called spiracles present on the lateral side of the body.
$(ii)$ Thin branching tubes carry oxygen from the air to all the parts.
$(iii)$ The opening of the spiracles is regulated by sphincters.
$(iv)$ Exchange of gases takes place at the tracheoles by diffusion.
Medium
View Solution$A$: In cockroach,inspiration is a passive process.
$R$: Expansion of abdominal cavity allows the space for expansion of the tracheal trunk,as a result,air enters through the spiracle.
$R$: Expansion of abdominal cavity allows the space for expansion of the tracheal trunk,as a result,air enters through the spiracle.
Medium
View SolutionWhich of the following happens in the common cockroach?
MediumAIPMT 2011
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