Marginal placentation.
Complete answer: Marginal placentation occurs in a monocarpellary, unilocular ovary. Plants belonging to Fabaceae family like Gram, Pea, Arhar, Sunhemp, Moog, Lupin bear Marginal placentation.
Is pea have Axile placentation?
The ovary in which the placenta forms a ridge along the ventral suture of the ovary and the ovules develop on two separate rows is known to have marginal placentation. e.g peas. (B) Parietal placentation: When the ovules develop on the inner walls of the ovary, the ovary is said to have parietal placentation.
What is placentation with example?
Placentation is the arrangement of ovules in the ovary of a plant. The given diagram shows the types of placentation such as basal, apical, parietal, marginal, axial, and free central. 1. Marginal: One elongated palcenta is located on one side of ovary.
What type of placentation is found in pea and sunflower?
Plants like marigold and sunflower shows basal placentation. Pea plant shows marginal placentation.
What is placentation answer?
During pregnancy, placentation is the formation and growth of the placenta inside the uterus. It occurs after the implantation of the embryo into the uterine wall and involves the remodeling of blood vessels in order to supply the needed amount of blood. In humans, placentation takes place 7–8 days after fertilization.
Which type of placentation occur in Pisum?
So, the type of placentation that can be seen in sweet pea commonly known as (Pisum sativum) is Marginal placentation. The second type is axile- In axile placentation when the placenta is axial and the ovules are attached to it in a multilocular ovary, the placentation is said to be axile.
Which placentation is in lemon?
Axile
Hence, the correct answer is ‘Axile‘
What are the five types of placentation?
There are five types of placentation that occurs in flowering plants i.e. axile, marginal, parietal, basal, superficial placentation.
What are three types of placentation?
Types of Placentation:
- Marginal placentation: The placenta forms a ridge that runs across the ovary’s ventral suture, and ovules are borne in two rows on the ridge.
- Axile placentation:
- Parietal placentation:
- Basal placentation:
- Free central placentation:
What is placentation in fruits?
Placentation refers to the way the ovules and developing seeds are attached to the plant’s ovary. Each developing seed will attach to the wall of the ovary or a central structure in the ovary. A filament of plant tissue called a funiculus connects the seed to the ovary wall.
What is the placentation of marigold?
Marigold has basal placentation. Q.
What is the placentation in Primrose?
Primrose has free-central placentation where the ovules are borne around a central column, which is not connected with the ovary wall by any septum.
What type of placentation is found in cucumber?
The type of placentation seen in cucumber is Parietal. Marginal placentation– In marginal placentation, the placenta forms a ridge along the ventral suture of the ovary and the ovules develop on it making two separate rows.
What is placentation class 11 biology?
Placentation is defined as the arrangement of the placenta in the ovary of a flower. The placenta connects the ovules with the wall of the ovary. 1. Marginal placentation- In marginal placentation, the placenta forms a ridge along the ventral suture of the ovary and the ovules develop on it making two separate rows.
What is placentation in plants?
Placentation refers to the mode of ovule attachment on the ovary wall. The ovary in most flowering plants is a compound structure formed by the union of two or more carpels.
What is placentation Class 12?
The arrangement of placenta and ovules within the ovary is called placentation. There are different kinds of placentation namely, marginal, parietal, axile, free central, basal and superficial placentation. In marginal placentation, placenta bearing ovules develop along the junction of the two margins of the carpel.
Which type of placentation is seen in sweet potato?
The ovary in potato is bilocular, placenta is swollen with several ovules. This type of placentation is called axile.
Is Sunflower a basal?
Sunflower exhibits basal placentation in which the placenta develops at the base of ovary and a single ovule is attached to it.
What is the example of free central placentation?
In free central placentation, ovules are borne around a central column, which is not connected with the ovary wall by any septum. e.g. Dianthus. Brassica and Argemone have parietal placentation while citrus has axile placentation.
What is the placentation of banana?
axile placentation
Ovary inferior, tricarpellary, syncarpous, trilocular, numerous ovules on axile placentation. The style is simple and filiform.
Is tomato free Central?
Placentation is the arrangement of ovules within the ovary. It is of different types namely, marginal (pea), parietal (mustard, Argemone), axile (China rose, tomato, lemon) and free central (Dianthus, Primrose)