List of top Questions asked in AP EAPCET

The bacterium converts nitrites into nitrates.

Match the following pollutants with their corresponding control methods.

Pollutants Control
A) Particulate matter I) Catalytic converter
B) Carbon monoxide II) Scrubber
C) Sulphur dioxide III) Incinerators
D) Hospital wastes IV) Electrostatic precipitator

Study the following statements regarding osmoregulatory adaptations in marine and freshwater fish and identify the correct statements:
Statements
I. Marine fishes actively excrete excess salt through their gills.
II. Freshwater fishes have glomerular kidneys.
III. Marine fishes face the problem of exosmosis.
IV. Freshwater fishes have salt-excreting chloride cells.

The last part of the proctodaeum in a cockroach is:

Statement I: First pair of wings in cockroach help in flight and are called tegmina.
Statement II: In cockroach, arolia help in locomotion on smooth surfaces; plantulae help on rough surfaces.

Pick the wrongly matched pair:

Parasite that causes African sleeping sickness:

Match the parasites with their infective stages in humans:

Parasites	Infective stage
A) Entamoeba histolytica	I) Tetranucleate cyst
B) Plasmodium vivax	II) Sporozoite
C) Ascaris lumbricoides	III) 2nd stage Rhabditiform larva
D) Wuchereria bancrofti	IV) 3rd stage Microfilaria

Assertion (A): Binary fission in Euglena is called symmetrogenic division.
Reason (R): Plane of fission in Euglena is at right angles to the longitudinal axis of the body.

Filopodia are found in which of the following organisms?

Study the following and pick up the correct combinations:

Sl.No.	Classes	Features	Examples
I	Osteichthyes	Filamentous gills	Scoliodon
II	Amphibia	Sternum appeared first time	Ichthyophis
III	Reptiles	Temporal fossae	Bungarus
IV	Aves	Corpus callosum in brain	Corvus

Match the following:

List I	Description	List II	Description
A	Glycosidic bond	I	Formed by dehydration
B	Hollow woollen ball folding	III	Tertiary structure of protein
C	Enzyme	II	Trypsin
D	Ester bond	IV	Bond between phosphate and 5^th carbon of sugar

Match the following:

List I	Microorganism	List II	Type
A	Beggiatoa	I	Chemoautotroph
B	Salmonella	II	Parasite
C	Rhodopseudomonas	III	Photoheterotroph
D	Bacillus	IV	Saprophyte

Match the following:

List I	Name	List II	Contribution
A	Hugo de Vries	I	Mutations
B	Sturtevant	II	Gene Mapping
C	Morgan	III	Linkage
D	Sutton and Boveri	IV	Chromosomal theory

Match the following varieties with their pest/disease resistance:

List I (Variety)		List II (Pest/Disease)
A	Pusa Gaurav	I	Nematodes
B	Pusa Sem 2 (Bean)	II	Stem and fruit borer
C	Pusa Sawani (Okra)	III	Jassids, aphids, fruit borer
D	Parbhani Kranti (Okra)	IV	Yellow Mosaic Virus

Match commercial products with their microbial source:

Commercial Product		Microbial Product
A	Detergents	IV	Lipases
B	Bottled juice	III	Pectinase
C	Clot busters	II	Streptokinase
D	Immunosuppressive agent	I	Cyclosporin-A

Match the following:

Zoological Name		Common Name
A) Pila		I) Apple snail
B) Lepisma		II) Silver fish
C) Daphnia		III) Water flea
D) Aranea		IV) Spider

It is the fore-runner of thyroid gland of vertebrates:

Identify the flatworms among the following non-chordate animals:

I. Euspongia
II. Aurelia
III. Beroe
IV. Taenia
V. Wuchereria
VI. Convoluta

Choose the correct option:
Statement I: Synaptic transmission occurs from presynaptic to postsynaptic neuron.
Statement II: Presynaptic membrane contains receptors for neurotransmitters.

Methanogens are:

Choose the incorrect statements:

I. Human insulin is made in fungus
II. Insulin DNA sequences are introduced into the genophore of E. coli
III. Recombinant E. coli produces insulin chains

Methods for inserting recombinant DNA into host:

I. Selectable marker
II. Disarmed pathogen vector
III. Biolistic method
IV. Microinjection

In which crosses both phenotypic and genotypic F$_2$ ratios are 1:2:1?

I) Red $\times$ White snapdragon (incomplete dominance)
II) Tall $\times$ Dwarf garden pea
III) Dotted $\times$ Spotted seed coat lentil
IV) Homozygous $\times$ Heterozygous

Choose the incorrect statements:

I. Electrons from NADH produced in the mitochondrial matrix are oxidized by complex II
II. Ubiquinones oxidised to ubiquinol by receiving reducing equivalents from complex I
III. Ubiquinol oxidized to ubiquinone by transfer of electrons to complex III