Alimentary Canal of Cockroach

Q.

The digestive system of a cockroach is associated with symbiotic _____ $\&$ _____.

1. Protozoa & Fungi

2. Fungi & Virus

3. Bacteria & Mites

4. Bacteria & Protozoa

Q. The anatomical and physiological adaptations seen in a cockroach which help it digest non-biological matter as well, are _____.

1. Crop, Pharynx, Hepatic caeca.

2. Bigger Labium, Hypopharynx, Strong enzymes.

3. Mandibles, Proventricular teeth, Symbiotic bacteria and Protozoa.

4. Longer Foregut, Midgut with Malpighian tubules, Broader Hindgut.

Q. Which of the following is correctly stated as it happens in the common cockroach?

1. Malpighian tubules are excretory organs projecting out from the colon
2. Oxygen is transported by hemoglobin in blood
3. Nitrogenous excretory product is urea
4. The food is ground by mandibles and gizzard

Q. Arrange the given parts of a cockroach's digestive system into the correct sequence.

1. Crop
2. Gizzard
3. Pharynx
4. Malpighian tubes
5. Hepatic caecae

Q. The digestive system of a cockroach is associated with symbiotic

1. bacteria
2. protozoan
3. virus
4. fungi

Q. Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth:

1. Pharynx $\to$ Oesophagus $\to$Ileum $\to$Crop $\to$ Gizzard $\to$ Colon $\to$ Rectum
2. Pharynx $\to$ Oesophagus $\to$ Crop $\to$Gizzard $\to$ Ileum $\to$ Colon $\to$ Rectum
3. Pharynx $\to$ Oesophagus $\to$ Gizzard $\to$ Crop $\to$ Ileum $\to$ Colon $\to$ Rectum
4. Pharynx $\to$ Oesophagus $\to$ Gizzard $\to$ Ileum $\to$ Crop $\to$ Colon $\to$ Rectum

Q. Which among the following is divided into ileum, colon and rectum?

1. Midgut
2. Hindgut
3. Foregut
4. Mesentron

Q. Find the correct order of the parts of alimentary canal in cockroach:

1. Mouth – Oesophagus- Pharynx – Gizzard
2. Pharynx – Gizzard – Crop – Malpighian tubules
3. Pharynx – Gizzard – Crop – Oesophagus – Malpighian tubules
4. Mouth – Pharynx – Crop – Gizzard

Q. Which of the following organs secrete digestive juices in cockroach?

1. Gizzard
2. Hepatic caeca
3. Malpighian tubules
4. Crop

Q. Cockroach has a stomodeal valve between

1. crop and gizzard
2. gizzard and mesentron
3. mesenteron and ileum
4. ileum and colon