explain in short
MONODELPHPUS
DIDYNAMOUS
STAMINODE
PLANTATION
INFLORENCE
biology chapter 3 flower
class 9
Answers
Answer:
1.)united by the filaments into one group usually forming a tube around the gynoecium.
2.)having four stamens disposed in pairs of unequal length —used especially of plants of the families Scrophulariaceae and Labiatae.
3.)In botany, a staminode is an often rudimentary, sterile or abortive stamen, which means that it does not produce pollen. Staminodes are frequently inconspicuous and stamen-like, usually occurring at the inner whorl of the flower, but are also sometimes long enough to protrude from the corolla.
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4.)a large area of land, especially in a hot country, where tea, cotton, tobacco, etc. are grown.
5.)the complete flower head of a plant including stems, stalks, bracts, and flowers.
the arrangement of the flowers on a plant.
the process of flowering.
Explanation:
hope it helps u
Answer:
Monadelphous: When the filaments of anthers in a flower are fused into one group, the condition is called monadelphous.
having four stamens disposed in pairs of unequal length —used especially of plants of the families Scrophulariaceae and Labiatae
In botany, a staminode is an often rudimentary, sterile or abortive stamen, which means that it does not produce pollen. Staminodes are frequently inconspicuous and stamen-like, usually occurring at the inner whorl of the flower, but are also sometimes long enough to protrude from the corolla.
Placentation refers to the arrangement of ovules inside the ovary. It is of five basic types:
(A) Marginal 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. This type of placentation is found in peas.
(B) Parietal placentation-
When the ovules develop on the inner walls of the ovary, the ovary is said to have parietal placentation.
C) Axile placentation-
In axile placentation, the placenta is axial and ovules are attached to it. Examples include China rose, lemon and tomato.
(D) Basal placentation-
The ovary in which the placenta develops from its base and a single ovule is found attached to the base is said to have basal placentation. It is found in marigold and sunflower.
(E) Free central placentation-
In free central placentation, the ovules develop on the central axis while the septa are absent. This type of placentation is found in Dianthus and primrose.
Inflorescence is the arrangement of the ovaries on the flower. Ovules are attached to placenta in ovary. Essential parts of a flower include stamens and carpels. Androecium consist of male reproductive organs called stamens.
or Inflorescence is the arrangement of flowers on the floral axis.”
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