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
Plants with ovaries having only one or a few ovules, are generally pollinated by
Bees
Butterflies
Birds
Birds
The second stage of hydrosere is occupied by plants like
Azolla
Typha
Salix
Salix
D.
Salix
Hydrosere originating in a pond starts with colonisation of some phytoplanktons which forms the pioneer plant community. The stages are
1st- Bacteria, Blue-green algae, Algae
2nd- Hydrilla Potamogeton, Vallisneria
3rd -Nelumbo, Nymphaea, Trapa, Azolla, Wolffia
4th-Typha, Sagitaria
5th- Juncus, Cyperus
6th- Salix, Populus, Almus
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