The digestive system of frog is made of the following parts. Arrange them

in an order beginning from mouth.

 Mouth, oesophagus, buccal cavity, stomach, intestine, cloaca, rectum,

What is the difference between cutaneous and pulmonary respiration?

Special Venous connection between liver and intestine and between kidney and intestine is found in frog, what are they called?

56.

Which mouth part of cockroach is comparable to our tongue?

 

Pawan gets bitten by an ant on his finger and after few minutes the finger swells up. How does it occur? Which cells are responsible for it?

In the stomach, HCl is secreted by which cells?

Correct the wrong statements among the following:
a. In earthworm, a single male genital pore is present.
b. Setae help in locomotion of earthworm.
c. Muscular layer in the body wall of earthworm is made up of only circular muscles.
d. Typhlosole is the part of intestine of earthworm.

After a rainy day, earthworms were crawling on the moist soil of the fields. Father cautioned Rakesh to be careful so that earthworms are not crushed under his feet. Rakesh asked the reason and father replied that earthworms are farmer’s friends. Read the above passage and answer the following questions:

a) Why the earthworm regarded as farmers friend? Give two reasons.

b) Which habit of earthworm help in increasing soil fertility?

c) Name the term used for the increase in soil fertility by earthworm?