Diadelphous stamens are found in [2021]
China rose and citrus
China rose
citrus
pea
(4)
Pea (Pisum sativum) belongs to Family Fabaceae in which all stamens are united and form two bundles.
Ray florets have [2020]
inferior ovary
superior ovary
hypogynous ovary
half inferior ovary
(1)
The ovary is inferior in ray florets of sunflower. It possesses an epigynous flower i.e., the margin of the thalamus grows upward enclosing the ovary completely and getting fused with it. The other parts of the flower arise above the ovary.
The ovary is half-inferior in [2020]
brinjal
mustard
sunflower
plum
(4)
The ovary is superior in brinjal and mustard while it is inferior in sunflower.
Placentation in which ovules develop on the inner wall of the ovary or in the peripheral part, is [2019]
free central
basal
axile
parietal
(4)
Parietal placentation is found in a compound or syncarpous ovary. There are two or more longitudinal placentae or files of ovules attached to the ovary wall. The ovary is usually unilocular but becomes falsely two or more locular due to the ingrowth of placentae or formation of false septa.
Match the placental types (column-I) with their examples (column-II). [2019]
| Column-I | Column-II |
| (A) Basal | (i) Mustard |
| (B) Axile | (ii) China rose |
| (C) Parietal | (iii) Dianthus |
| (D) Free central | (iv) Sunflower |
Choose the correct answer from the following options:
(A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)
(A)-(i), (B)-(ii), (C)-(iii), (D)-(iv)
(A)-(iv), (B)-(ii), (C)-(i), (D)-(iii)
(A)-(iii), (B)-(iv), (C)-(i), (D)-(ii)
The term 'polyadelphous' is related to [2016]
gynoecium
androecium
corolla
calyx
(2)
Polyadelphous condition represents cohesion of stamens. In this condition, stamens of a flower are fused by their filaments only to form many groups, e.g., Citrus.
How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram, and turnip have stamens with different lengths in their flowers? [2016]
Three
Four
Five
Six
Radial symmetry is found in the flowers of [2016]
Brassica
Trifolium
Pisum
Cassia
(1)
The flowers of Brassica are radially symmetrical, whereas flowers of Trifolium, Pisum, and Cassia are zygomorphic.
Free central placentation is found in [2016]
Dianthus
Argemone
Brassica
Citrus
(1)
Free central placentation is found in Dianthus. Parietal placentation is present in Argemone and Brassica, whereas Citrus has axile placentation in the ovary.
The standard petal of a papilionaceous corolla is also called [2016]
vexillum
corona
carina
pappus
(1)
The posterior large bilobed petal of a papilionaceous corolla is called standard or vexillum. It overlaps the two smaller lateral petals known as wings or alae.
