Which one of the following generally acts as an antagonist to gibberellins?
Zeatin
Ethylene
ABA
ABA
As compared to a dicot root, a monocot root has
more abundant secondary xylem
many xylem bundles
inconspicuous annual rings
inconspicuous annual rings
B.
many xylem bundles
The vasculature is radial in dicot root i.e.,xylem bundles alternate with phloem bundles. Usually vascular bundles are 2-6 in number while in monocot root the vascular strand consists of several (8 or more) alternate radial xylem and phloem bundles. Secondary growth takes place in dicot root while absent in monocot roots and annual rings do not form.
Plants with ovaries having only one or a few ovules, are generally pollinated by
Bees
Butterflies
Birds
Birds
Which one of the following pairs of animals are similar to each other pertaining to the feature stated against them?
Pteropus and Ornithorhyncus - Viviparity
Garden lizard and Crocodile - Three chambered heart
Ascaris and Ancylostoma - Metameric segmentation
Ascaris and Ancylostoma - Metameric segmentation
Which one of the following categories of animals, is correctly described with no single exception in it?
All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal)
All bony fishes have four pairs of gills and an operculum on each side
All sponges are marine and have collared cells
All sponges are marine and have collared cells
Which one of the following organisms is scientifically correctly named, correctly printed according to the International Rules of Nomenclature and correctly described?
Musca domestica – The common house lizard, a reptile
Plasmodium falciparum – A protozoan pathogen causing the most serious type of malaria
Felis tigris – The Indian tiger, well protected in Gir forests
Felis tigris – The Indian tiger, well protected in Gir forests