CBSE
Multiple Choice QuestionsThe growth of pollen tube towards embryo sac is
geotropism
chemotaxis
thigmotaxis
phototaxis
The aleurone layer in maize grain is specially rich in
starch
lipids
protein
cellulose
Ruminate endosperm occurs in
Annonaceae/Areca nut
Compositae
Cruciferae
Euphorbiaceae
The development ofsporangium in Pteridium is
a leptosporangiate type
an eusporangiate type
Both (a) and (b)
None of the above
What is true about a gamo spermous apospory?
Formation of embryo from egg of embryo sac proliferated from a nucellar cell
Formation of embryo from egg of embryo sac formed directly from megaspore mother cell
Formation of embryo directly from nucellus
Formation of embryo directly from integument
In a flowering plant, archesporium gives rise to
wall and tapetum
only tapetum and sporogenous cells
only wall of the sporangium
both wall and sporogenous cells
A hyaline bisexual and self-fertilized flower that does not open at all is
chasmogamaus
apogamous
cleistogamous
polygamous
Cleavage polyembryony occurs in
Pinus
Mini Cycas
Cycas
Ephedra
The edible part of apple/ pear is
cotyledons
thalamus/ receptacle
mesocarp
endocarp
What type of sorus is present in Nephrolepsis?
Coenosorus
Simple
Mixed
None of these
