These are placentation types based on the attachment of ovules within the ovary:
- Ridge
- Inner wall of the ovary
- Base of the ovary
These are placentation types based on the attachment of ovules within the ovary:
- Ridge
- Inner wall of the ovary
- Base of the ovary
Show Hint
- Marginal, Parietal, Basal
- Axile, Parietal, Free central
- Basal, Axile, Marginal
- Marginal, Axile, Basal
The Correct Option is A
Approach Solution - 1
To solve the problem, we need to identify the correct placentation types based on the attachment of ovules in the ovary.
1. Understanding the Placentation Types:
Placentation refers to the arrangement of ovules within the ovary. Common types of placentation include:
Marginal: Ovules are attached along the margin of the ovary.
Parietal: Ovules are attached to the inner wall or the base of the ovary.
Basal: Ovules are attached at the base of the ovary.
Axile: Ovules are attached to a central column inside the ovary.
Free central: Ovules are attached to a central column but without a partition.
2. Analyzing the Options:
(A) Marginal, Parietal, Basal: These are correct types of placentation, where the ovules are attached along the margin, to the wall, and at the base of the ovary respectively.
(2) Axile, Parietal, Free central: These terms are correct in describing types of placentation, but they refer to different characteristics of the ovule attachment.
(3) Basal, Axile, Marginal: These are also correct types of placentation, but the order is different from the correct arrangement.
(4) Marginal, Axile, Basal: This set also describes correct types of placentation, but the order does not match the standard terminology.
3. Identifying the Correct Answer:
The correct order of placentation types, as listed in the question, is Option (A), which is Marginal, Parietal, and Basal.
Final Answer:
The correct answer is Option A: Marginal, Parietal, Basal.
Approach Solution -2
Marginal placentation occurs on the ridge of the ovary.
Parietal placentation occurs along the inner wall of the ovary.
Basal placentation occurs at the base of the ovary.
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