Nutrition in Cockroach

Q.

In Cockroach grinding of food particles is performed by________.

Q.

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

1. Pharynx$$$$→ Esophagus→ Crop → Gizzard→ Ileum → Colon→ Rectum.

2. Pharynx$$$$→ Esophagus→ Gizzard→ Crop→ Ileum→ Colon→

   Rectum.

3. Pharynx$$$$→ Esophagus→ Gizzard→ Ileum→ Crop→ Colon→ Rectum

4. Pharynx$$$$→ Esophagus→ Ileum→ Crop →Gizzard→ Colon→ Rectum.

Q.

Write about labium in cockroaches.

Q. From the options given below, choose the parts of foregut of a cockroach.

1. Rectum
2. Gizzard
3. Oesophagus
4. Mouth

Q. The pair of feelers on the head region of cockroach is called ___.

1. antennae
2. abdomen
3. gizzard
4. thorax

Q. is the part of the alimentary canal of cockroach which stores the food for short time.

1. Mesenteron
2. Gizzard
3. Crop

Q. In the digestive system of cockroach, which part of the foregut grinds food?

1. Mouth
2. Oesophagus
3. Crop
4. Gizzard

Q. Cockroaches can live a month without food and a week without water.

1. True
2. False

Q. Match the following.

$\begin{array}{cc}\text{Column A}& \text{Column B}\\ \left(a\right)\text{Foregut}& \left(i\right)\text{Major site of chemical digestion.}\\ \left(b\right)\text{Midgut}& \left(ii\right)\text{Reabsorption of water.}\\ \left(c\right)\text{Hindgut}& \left(iii\right)\text{Food is crushed and lubricated.}\end{array}$

1. a - i, b - iii, c - ii
2. a - ii, b - iii, c - i
3. a - ii, b - i, c - iii
4. a - iii, b - i, c - ii

Q. Select the option which correctly defines the parts labelled in the image.

i. Thorax
ii. Abdomen
iii. Head
iv. Antennae

1. A - ii, B - iv, C - i, D - iii
2. A - iii, B - iv, C - i, D - ii
3. A - ii, B - i, C - iv, D - iii
4. A - iv, B - i, C - ii, D - iii

Q. Cockroaches can survive without head as they have closed circulatory system.

1. True
2. False

Q. Select the option which incorrectly defines the function of the term.

1. Crop - food is stored for a short time.
2. Gizzard - food is crushed and lubricated.
3. Anus - excretion of undigested food.
4. Rectum - reabsorption of water from undigested food.

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

1. False
2. True