Due to increasing air-borne allergens and
pollutants, many people in urban areas are
suffering from respiratory disorder causing
wheezing due to
(1) benign growth on mucous lining of nasal cavity
(2) inflammation of bronchi and bronchioles
(3) proliferation of fibrous tissues and
damage of the alveolar walls
(4) reduction in the secretion of surfactants
by pneumocytes.

Select the incorrect statement.
(1) Male fruit fly is heterogametic
(2) In male grasshoppers 50% of sperms have
no sex-chromosome
(3) In domesticated fowls, sex of progeny
depends on the type of sperm rather than
egg
(4) Human males have one of their sex-
chromosome much shorter than the other

DNA precipitation out of a mixture of
biomolecules can be achieved by treatment
with
(1) Isopropanol
(2) Chilled ethanol
(3) Methanol at room temperature
(4) Chilled chloroform

Select the correct group of biocontrol
agents.
(1) Bacillus thuringiensis, Tobacco mosaic
virus, Aphids
(2) Trichoderma, Baculovirus, Bacillus
thuringiensis
(3) Oscillatoria, Rhizobium, Trichoderma
(4) Nostoc, Azospirillium, Nucleopolyhedrovirus

Select the incorrect statement.
(1) Inbreeding increases homozygosity
(2) Inbreeding is essential to evolve purelines
in any animal.
(3) Inbreeding selects harmful recessive
genes that reduce fertility and productivity
(4) Inbreeding helps in accumulation of
superior genes and elimination of
undesirable genes

Match the following organisms with the
products they produce
(a ) Lactobacillus (i) Cheese
(b) Saccharomyces (ii) Curd cerevisiae
(c) Aspergillus niger (iii) Citric Acid
(d) Acetobacter aceti (iv) Bread
(v) Acetic Acid
Select the correct option.
(a ) (b) (c) (d)
(1) (ii) (iv) (v) (iii)
(2) (ii) (iv) (iii) (v)
(3) (iii) (iv) (v) (i)
(4) (ii) (i) (iii) (v)

What is the direction of movement of sugars
in phloem?
(1) Non-multidirectional
(2) Upward
(3) Downward
(4) Bi-directional

In some plants, the female gamete develops
into embryo without fertilization. This
phenomenon is known as
(1) Autogamy
(2) Parthenocarpy
(3) Syngamy
(4) Parthenogenesis

Persistent nucellus in the seed is known as
(1) Chalaza
(2) Perisperm
(3) Hilum
(4) Tegmen

What map unit (Centimorgan) is adopted in the
construction of genetic maps?
(1) A unit of distance between two expressed
genes representing 10% cross over.
(2) A unit of distance between two expressed
genes representing 100% cross over.
(3) A unit of distance between genes on
chromosomes, representing 1% cross
over.
(4) A unit of distance between genes on
chromosomes, representing 50% cross
over.

What would be the heart rate of a person if
the cardiac output is 5 L, blood volume in the
ventricles at the end of diastole is 100 mL and
at the end of ventricular systole is 50 mL?
(1) 50 beats per minute
(2) 75 beats per minute
(3) 100 beats per minute
(4) 125 beats per minute

Thiobacillus is a group of bacteria helpful in
carrying out
(1) Nitrogen fixation
(2) Chemoautotrophic fixation
(3) Nitrification
(4) Denitrification

Which of the following factors is responsible
for the formation of concentrated urine?
(1) Low levels of antidiuretic hormone
(2) Maintaining hyperosmolarity towards
inner medullary interstitium in the kidneys.
(3) Secretion of erythropoietin by
Juxtaglomerular complex
(4) Hydrostatic pressure during glomerular
filtration

Which of the following statements regarding
mitochondria is incorrect?
(1) Outer membrane is permeable to
monomers of carbohydrates, fats and
proteins.
(2) Enzymes of electron transport are
embedded in outer membrane.
(3) Inner membrane is convoluted with
infoldings.
(4) Mitochondrial matrix contains single
circular DNA molecule and ribosomes.

Xylem translocates.
(1) Water only
(2) Water and mineral salts only
(3) Water, mineral salts and some organic
nitrogen only
(4) Water, mineral salts, some organic
nitrogen and hormones