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Earthworm is 1)Monoecious 2) Protandrou...

Earthworm is
1)Monoecious
2) Protandrous
3) Unisexual
4) Both 1 and 2

A

Monoecious

B

Protandrous

C

Unisexual

D

Both 1 and 2

Text Solution

AI Generated Solution

The correct Answer is:
To answer the question regarding the reproductive characteristics of the earthworm, we will analyze each option step by step. ### Step 1: Understanding "Monoecious" - **Definition**: The term "monoecious" refers to organisms that possess both male and female reproductive organs within the same individual. This means that a monoecious organism can produce both male and female gametes. - **Application to Earthworm**: Earthworms are indeed monoecious because they contain both male and female reproductive organs. ### Step 2: Understanding "Protandrous" - **Definition**: "Protandrous" describes a type of hermaphroditism where the male reproductive organs mature before the female reproductive organs. This ensures that self-fertilization does not occur, promoting cross-fertilization. - **Application to Earthworm**: In earthworms, the male gametes mature before the female gametes, making them protandrous. ### Step 3: Understanding "Unisexual" - **Definition**: "Unisexual" refers to organisms that have either male or female reproductive organs, but not both. This means that unisexual organisms can only produce one type of gamete. - **Application to Earthworm**: Earthworms are not unisexual; they have both male and female reproductive organs. ### Step 4: Evaluating the Options - **Option 1**: Monoecious - Correct, as earthworms are hermaphrodites. - **Option 2**: Protandrous - Correct, as male gametes mature before female gametes in earthworms. - **Option 3**: Unisexual - Incorrect, as earthworms possess both male and female reproductive organs. - **Option 4**: Both 1 and 2 - Correct, as both statements about earthworms being monoecious and protandrous are true. ### Conclusion The correct answer to the question is **Option 4: Both 1 and 2**. ---
To answer the question regarding the reproductive characteristics of the earthworm, we will analyze each option step by step. ### Step 1: Understanding "Monoecious" - **Definition**: The term "monoecious" refers to organisms that possess both male and female reproductive organs within the same individual. This means that a monoecious organism can produce both male and female gametes. - **Application to Earthworm**: Earthworms are indeed monoecious because they contain both male and female reproductive organs. ### Step 2: Understanding "Protandrous" - **Definition**: "Protandrous" describes a type of hermaphroditism where the male reproductive organs mature before the female reproductive organs. This ensures that self-fertilization does not occur, promoting cross-fertilization. ...
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