15241.The term prothallus refers to
a plant body not differentiated into root, stem and leaves
reduced sporophyte
a stage before thallus formation
reduced gametophyte
15372.Insect mouthparts are adapted for different functions in different species. Mouthparts of houseflies are used for
Siphoning
Piercing and sucking
Sponging and lapping
Biting and chewing
15619.Fibrous tissue which connects bones is______.
Connective tissue
Tendon
Adipose tissue
Ligament
15830.Enzyme catalyzing rearrangement of atomic groupings without altering molecular weight or number of atoms is
ligase
isomerase
oxidoreductase
hydrolase
16356.The harmone which stimulates the flowering in vernalized plant is
Florigen
Vernalin
Cytokinin
Gibberellin
16408.The direction and the rate of water movement from cell to cell is based on
Diffusion pressure deficit
Incipient plasmolysis
Turgor pressure
Wall pressure
16567.When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from
Pellagra
Marasmus
Rickets
Kwashiorkor
16718.Inner membrane involutions of a mitochondria are called
Lamellae
Cristae mitochondriales
Thylakoid
Tubules
16803.Which one of the followings is NOT correct regarding Exhalation (expiration)?
Expiration is typically a passive process
Exhalation starts when the expiratory muscles relax
The elastic properties of the lung help to expel deoxygenated air during exhalation
During exhalation, elastic properties of the lung help to expel deoxygenated air
16852.Incomplete oxidation of glucose into pyruvic acid with several intermediate steps is known as
TCA pathway
HMS pathway
HSK pathway
EMP pathway
17005.Krebs cycle is component of
Photosynthesis
Aerobic respiration
Anaerobic respiration
Photorespiration.
17086.Artificial pace maker is transplanted in
Inter auricular septum
Below the collar bone
Inter ventricular septum
Right auricle
17301.The renal medulla consists of cone-shaped tissue masses called _______.
Renal pyramid
Adipose capsule
Renal cortex
Renal pelvis
17353.Which molecule provides ATP during muscle contraction?
Creatine phosphate
Hemoglobin
Myoglobin
Myosin
17415.A skeletal muscle which decreases the angle between two bones and bends a joint is
Flexor
Abductor
Extensor
Adductor
17619.Fibrous thickenings of hygroscopic nature are found in this part of the anther wall:
Middle layers
Endothecium
Epidermis
Tapetum
17830.The morula is formed during cleavage after
2 days of fertilization
at the end of third day of fertilization
4 days after fertilization
7 days of fertilization
17984.Nondisjunction may occur due to the failure of ______ chromosomes to separate properly in meiosis I.
Defective
Heterozygous
Homologous
Autosomal
18013.A common test to find the genotype of a hybrid is by:
Crossing of one F1 progeny with male parent
Crossing of one F2 progeny with male parent
Crossing of one F2 progeny with female parent
Studying the sexual behaviour of F1 progenies
18267.AIDS is due to
reduction in number of helper T-cells
Reduction in number of killer T-cells
Autoimmunity
Non-production of interferons
18277.Immune deficiency syndrome could develop due to
Defective liver
Defective thymus
AIDS virus
Weak immune system
18350.Which one of the followings is a water borne disease?
Tuberculosis
Malaria
Cholera
Chicken pox
18378.Which one of the following diseases is caused by bacteria
Rabies
Small pox
Measles
Tuberculosis
18465.Progenitors formed in bone marrow but differentiating elsewhere are
Pre-NK cells
Pre-erythroblasts
Pre-T cells
Myeloblasts
18630.Smooking is used as a technique of
Fish preservation
Mushroom cultivation
Crystalisation of sugar
Crop harvesting
18708.Dolly, The first cloned mammal, was produced by
Parthenogenesis
Artificial fertilization
Replacement of zygote nucleus by somatic nucleus
in vitro fertilization
18771.Some of the characteristics of Bt cotton are
Medium yield, long fibre and resistance to beetle pests
Long fibre and resistance to aphids
High yield and resistance to bollworms
High yield and production of toxic protein crystals which kill dipteran pests
18877.DNA and RNA show similarity in having
Polymers of nucleotides
Similar pyrimidines
Double strands
Similar sugars
18960.In a population, if the rate of addition of new members is higher than the rate of individuals lost, it shows
Exponential growth
Declined growth
Zero population growth
none of these
18997.Organisms that can tolerate and thrive in a wide range of temperatures are called
Eukaryotic organisms
Stenothermal
Eurythermal
None of these
19128.Red data book deals with
Maintains and publish list of endengered and endemic species
Maintains and publish list of Plants that are extinct
Maintains and publish list of Animals that are extinct
Maintains and publish list of dangerous species