The body of the ovule is fused within the funicle at [2020]
hilum
micropyle
nucellus
chalaza
(1)
The hilum is a scar on the seed coat where funicle and body of ovule is attached.
The morphological nature of the edible part of coconut is [2017]
cotyledon
endosperm
pericarp
perisperm
(2)
Cotyledon of maize grain is called [2016]
coleoptile
scutellum
plumule
coleorhiza
(2)
The seeds of monocotyledonous plants have only one cotyledon. In Family Poaceae (e.g., wheat, maize, etc.), this cotyledon is called scutellum, situated towards the lateral side of the embryonal axis. It provides nourishment to the developing embryo.
The wheat grain has an embryo with one large, shield-shaped cotyledon known as [2015]
scutellum
coleoptile
epiblast
coleorhiza
Which one of the following statements is correct? [2014]
The seed in grasses is not endospermic.
Mango is a parthenocarpic fruit.
A proteinaceous aleurone layer is present in maize grain.
A sterile pistil is called a staminode.
(3)
Grass seeds are endospermic. Mango is a seeded fruit. A sterile pistil is called a pistillode, and a sterile stamen is called a staminode. Maize grains consist of a fruit wall, seed coat, endosperm, and embryo. The endosperm occupies most of the grain's interior and consists of two parts: the horny aleurone layer and mainly storage layers. The aleurone layer lies immediately below the grain covering and is 1–3 cells thick. Aleurone cells are thick-walled with cytoplasm filled with aleurone grains, which produce enzymes during seed germination to mobilize stored nutrients.
