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प्रश्न
Why nephridia in earthworm that are basically similar in structure classified into three types? Mention the names of each.
उत्तर
Nephridia are found in invertebrates and function similarly to vertebrate kidneys. They are classified into three types on the basis of their location in the body.
- Septal nephridia:- This kind of nephridia is present on both sides of the intersegmental septa of segment no.15 to last.
- Integumentary nephridia:- These are attached to the lining of the body wall of segment no.3 to last.
- Pharyngeal nephridia:- These are present as tufts in the three pairs in segment no. 4th, 5th and 6th.
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संबंधित प्रश्न
Which of the following is CORRECTLY stated as happens in common cockroach?
Earthworm live in the burrows which are made
Match the following with reference to cockroach and choose the correct option
| Column I | Column II |
| A. Hermaphrodite | i. Produces blood cells and haemoglobin |
| B. Direct development | ii. Testis and ovary in the same animal |
| C. Chemoreceptor | iii. Larval form absent |
| D. Blood gland in earthworm | iv. Sense of chemical substances |
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Correct the wrong statement from the following:
Muscular layer in the body wall of earthworm is made up of only circular muscles.
Correct the wrong statement from the following:
Typhlosole is the part of intestine of earthworm.
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