Which of the following characteristic features always holds true for the corresponding group of animals?
Possess a mouth with an upper and a lower jaw
3-chambered heart with one incompletely divided ventricle
Which one of the following statements is wrong?
Cyanobacteria are also called blue-green algae.
Golden algae are also called desmids.
Eubacteria are also called false bacteria.
Phycomycetes are also called algal fungi.
Which one of the following characteristics is not shared by birds and mammals?
Breathing using lungs
Warm blooded nature
Which of the following features is not present in the Phylum - Arthropoda?
The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the:
Select the correct statement:
Gymnosperms are both homosporous and heterosporous
Salvinia, Ginkgo and Pinus all are gymnosperms
Sequoia is one of the tallest trees
The leaves of gymnosperms are not well adapted to extremes of climate
One of the major components of cell wall of most fungi is :
Nomenclature is governed by certain universal rules.
Which one of the following is contrary to the rules of nomenclature?
Biological names can be written in any language
The first word in a biological name represents the genus name, and the second is a specific epithet
The names are written in Latin and are italicised
When written by hand, the names are to be underlined
Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom:
Which of the following statements is wrong for viroids?
They lack a protein coat
They are smaller than viruses
They cause infections
Their RNA is of high molecular weight
Option four is wrong Their RNA I SPF lower MW than virus
In bryophytes and pteridophytes, transport of male gametes requires: