PPSC Lecturer of zoology Past Papers
>> Smallest disease-causing agents in plants are viroids.
>> The major cell infected by HIV is lymphocyte helper-T.
>> Pigment present in red algae is phycoerythrin.
>> Nutrition in fungi is absorptive heterotrophs.
>> Fungi resemble plants because they lack centriole.
>> Cuscuta is a parasitic plant.
>> True roots are absent in bryophytes.
>> The mechanism for ATP synthesis is
>> Enzyme present in the saliva is ptyalin.
>> Nitrogen is present in proteins.
>> The food is ground in the cockroach in gizzard.
>> Operculum is present in bony fish.
>> In frog animal respiratory surface are found in
more than one organ.
>> The heart is enclosed in a membrane called the pericardium.
>> From right ventricle blood is pushed into the pulmonary trunk.
>> Proteins are abundant in the lymph.
>> Jaws without teeth are found in birds.
>> Male reproductive part of the flower is the stamen.
>> Coordination in plants is by hormones.
>> The simplest fatty acid is acetic acid.
>> All enzymes are proteins which are globular.
>> Cilia are produced from centriole.
>> T.B of the following disease is not caused by the virus
>> Spirogyra is a filamentous alga.
>> ‘Cassia fistula’ is the scientific name of amaltas.
>> Phage virus consists of head and tail.
>> Bacteria without any flagella are called atrichous.
>> Protists have been evolved from prokaryotes.
>> Algae differ from plants in that the sex organs in algae are unicellular.
>> Fungi can absorb food from the substrate because they have rhizoids.
>> A seed may be defined as a fertilized ovule.
>> Platyhelminthes means flatworms.
>> The first land vertebrates were amphibians.
>> All life on planet earth is powered by solar energy.
>> Recombinant DNA is introduced in to host cell by means of the vector.
>> In cystic fibrosis, the patient lacks a gene that
codes for the trans-membrane carrier of chloride ion.
>> In birds the sex is determined by the type of egg.
>> In RNA nucleotides are attached by a phosphodiester bond.
>> The chromosome is genes + protein.
>> The human body contains water 70-90%.
>> Environment is a source of Food, shelter and clothing.
>> Freshwater ecosystem covers 1%.
>> Foul smell in the lake is produced by algae, bacteria
>> Starch is richly present in cereals.
>> Plants having foreign DNA are known as
>> Nitrogen does not occur in carbohydrates.
>> The basic framework of all types of membranes is lipoproteins.
>> Single membrane-bounded organelle is lysosome.
>> Irregular grape-like a cluster of bacilli is called staphyloma bacilli.
>> It is generally accepted that green algae plants arose from ancestral.
>> Main energy reserves in the case of green algae are starch.
>> The chief component of the cell wall of the majority of fungi is chitin.
>> After pollination the pollens are transferred to stigma part of the flower.
>> Glyoxisomes contain enzymes for glyoxylate cycle.
>> Vacuoles serve to in expansion and storage.
>> An isolated virus is not considered living since it cannot metabolize.
>> The predominant phycobilin pigment in cyanobacteria which is of blue colour is phycocyanin.
>> Deafness is caused by misuse of streptomycin.
>> Cell envelope does not include cell membrane.
>> Coenocytes are a fungal body which is multinucleate aseptate.