Table of Contents
Which is having free central placentation?
Free central placentation is present in single chambered ovary with ovules borne on the central axis. Brassica and Argemone (parietal placentation), Citrus (axile placentation), Dianthus (free central).
What is the difference between Axile and free central placentation?
When the placenta is axial and the ovules are attached to it in a multilocular ovary, the placentaion is said to be axile. Examples – china rose, tomato and lemon. When the ovules are borne on central axis and septa are absent, the placentation is called free central.
What is free Central?
Definition of free central : having the placentas on a central column of tissue that is not connected by partitions to the wall of the ovary.
What is free Central placentation Class 11?
A single chambered ovary with ovules borne on the central axis has free central placentation.
Is Primrose is free Central placentation?
Free-central — a placentation type in which the ovules are borne on a free-standing central placenta within the ovary. This example is primrose (Primula cultivar).
Is free Central placentation unilocular?
Free central Placentation: The pistil is polycarpellary and syncarpous but the ovary is unilocular. The ovules are borne around a central column which is not connected with the ovary wall by any septum. E.g. Primrose, Dianthus. So, the correct answer is ‘Basal.
Is free Central placentation and central placentation same?
plant reproduction Free-central placentation resembles axile placentation; however, the column is not connected by partitions to the ovary wall, and thus no locules are formed. In basal placentation ovules are attached to the base of the ovary, and in parietal placentation the placentae are located directly on…
How can you differentiate between free central and Axile placentation Support your answer with diagrams?
| Free central placentation | Axile placentation |
|---|---|
| There is only one chamber in the ovary. | The ovary is multicarpellary and septate. |
| Ovules are borne on the central axis. | The placenta arises from the centre, the septa fuse at the centre to form the central axis. Ovules are borne on the central axis. |
What is central placentation?
free central placentation in American English Botany. a type of placenta structure in an ovary, in which the ovules cluster freely around a columnlike central placenta which is attached at the base of the ovary.
Is Primrose free Central?
Does Dianthus have free central placentation?
Dianthus is an annual flowering herb has a free central placentation as ovules are borne on the central axis as the septum is absent.
What is unilocular in plants?
unilocular. / (ˌjuːnɪˈlɒkjʊlə) / adjective. (esp of a plant ovary or anther) having or consisting of a single chamber or cavity.
Does sunflower have free central placentation?
The placentation is of different types namely, marginal, axile, parietal, basal, central and free central. In basal placentation, the placenta develops at the base of the ovary and a single ovule is attached to it, as in sunflower, marigold.
Which is having free central placentation Dianthus mustard sunflower Marigold?
Complete answer: In free central placentation, the ovules are borne on the central axis without septa. Therefore, the type of placentation in dianthus is free central.
What is the placentation of marigold?
Marigold belongs to family-Asteraceae, contains basal placentation.
What is meant by bilocular?
/ (baɪˈlɒkjʊlə) / adjective. biology divided into two chambers or cavitiessome flowering plants have bilocular ovaries.
What is the placentation of mango?
unilocular parietal
Placentation when unilocular parietal, or basal. Ovules in the single cavity 1; pendulous, or ascending; apotropous; with ventral raphe, or with dorsal raphe; non-arillate; anatropous. Fruit and seed features. Fruit fleshy; indehiscent; a drupe; 1 seeded (usually).
Which type of placentation occurs in Liliaceae?
Axile placentation
Axile placentation is commonly seen in Solanaceae, Rutaceae, Liliaceae. In bicarpellary to multicarpellary the axile placentation is present, syncarpous ovary, the carpels fuse to make septa forming a central axis and ovules are arranged on the axis.
What type of placentation is in hibiscus flower?
Answer. locule. This type of placentation in demonstrated in the hibiscus flower as well as the tomato fruit. Parietal placentation is found in the multicarpellary, syncarpous, unilocular ovary.