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प्रश्न
Comment upon the gametic exchange in earthworm during mating.
उत्तर
The mating process in earthworms is called copulation which occurs during the rainy season. The steps that are involved in gamete exchange in the earthworms are given below:-
- Two earthworms come closer to each other and get ventrally attached to each other in opposite directions.
- The copulation process begins when the male genital pore (i.e., papilla) of one earthworm is inserted into the spermathecal pore of the another earthworm.
- The earthworm remains mutually approximate by the penetration of setae in their bodies.
- The sperm and prostatic fluid of the earthworm are exchanged and the spermathecal pore stores the spermatozoa.
- The earthworms remain attached for an hour and the sperm and egg are passed into a cocoon which gets secreted by the clitellar gland present in the 14th to the 16th segment of the earthworm.
APPEARS IN
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 |
Why earthworm is called the friend of farmer?
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.
Why nephridia in earthworm that are basically similar in structure classified into three types? Mention the names of each.
