Endosperm is consumed by developing embryo in the seed of
coconut
castor
pea
pea
C.
pea
Endosperm, if present acts as the food storage tissue of a seed. The seeds with endosperm are called endospermic or albuminous (eg Cocos nucifera, Ricinus Communis, Zea mays and other cereals, while those without endosperm are called non-endospermic or exalbuminous seeds (eg, Brassica campestris, Arachis hypogea, Pisum Sativum).
In castor (Ricinus communis) the endosperm is whitish soft mass rich with oil reserve food material.
The endosperm in maize is yellowish in colour, the outermost layer of endosperms is called aleurone layer, which is rich in protein.
Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?
Bacterial leaf blight of rice
Downy mildew of grapes
Loose smut of wheat
Loose smut of wheat
Thorn of Bougainvillea and tendril of Cucurbita are examples of
analogous organs
homologous organs
vestigial organs
vestigial organs
In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statement is true about archaea?
Archaea resemble eukarya in all respects
Archaea have some novel features that are absent in other prokaryotes and eukaryotes
Archaea completely differ from both prokaryotes and eukaryotes
Archaea completely differ from both prokaryotes and eukaryotes
Thermococcus, Methanococcus and Methanobacterium emplify
archaebacteria that contain protein homologous to eukaryotic core histones
archaebacteria that lack any histones resembling those found in eukaryotes but DNA is negatively supercoiled
bacteria whose DNA is relaxed or positively supercoiled but which have cytoskeleton as well as mitochondria
bacteria whose DNA is relaxed or positively supercoiled but which have cytoskeleton as well as mitochondria
A genetically engineered micro-organism use successfully in bioremediation of oil spills is a species of
Pseudomonas
Trichoderma
Xanthomonas
Xanthomonas
Which pair of the following belongs to Basidiomycetes?
Birds nest fungi and Pufballs
Pufballs and Calviceps
Peziza and Stink horns
Peziza and Stink horns
