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the biomass available for consumption by the herbivores and the decomposers is called 1 net primary productivity2 secondary productivity3 standing
the excretion by the human kidneys1 descending limb of loop of henle is impermeable to water2 distal convoluted tubule is incapable of reabsorbing
injury to adrenal cortex is not likely to affect the secretion of which one of the following1 aldosterone2 both androstenedione and
a common biocontrol agent for the control of plant diseases is 1 baculovirus2 bacillus thuringiensis3 glomus4
seminal plasma in human males is rich in 1 fructose and calcium2 glucose and calcium3 dna and testosterone4 ribose and potassiumfructose and
pga as the first co2 fixation product was discovered in photosynthesis of1 bryophyte2 gymnosperm3 angiosperm4 algaalga
the genotype of a plant showing the dominant phenotype can be determined by 1 test cross2 dihybrid cross 3 pedigree analysis4 back crossit is
select the two correct statements out of the four a - d given below about lac operon1 glucose or galactose may bind with the repressor and inactivate
vasa efferentia are the ductules leading from1 testicular lobules to rete testis 2 rete testis to vas deferens 3 vas deferens to epididymis 4
which one of the following is not a micronutrient1 molybdenum2 magnesium3 zinc4 boronmagnesium
ringworm in humans is caused by 1 bacteria2 fungi3 nematodes4
the chief water conducting elements of xylem in gymnosperms are1 vessels2 fibres3 transfusion tissue4
which one of the following cannot be explained on the basis of mendels law of dominance1 the discrete unit controlling a particular character is
sertoli cells are found in1 ovaries and secrete progesterone2 adrenal cortex and secrete adrenaline3 seminiferous tubules and provide nutrition to
in unilocular ovary with a single ovule the placentation is 1 marginal2 basal3 free central4 axilebasal
which one of the following structures between two adjacent cells is an effective transport pathway1 plasmodesmata2 plastoquinones3 endoplasmic
in vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube1 embryo only upto 8 cell stage2
widal test is used for the diagnosis of1 malaria2 pneumonia3 tuberculosis4
breeding of crops with high levels of minerals vitamins and proteins is called1 somatic hybridisation2 biofortification3 biomagnification4
1 biogas is produced by the activity of aerobic bacteria on animal waste2 methanobacterium is an aerobic bacterium found in rumen of cattle3 biogas
which one of the following has its own dna1 mitochondria2 dictyosome3 lysosome4
the kind of epithelium which forms the inner walls of blood vessels is 1 cuboidal epithelium2 columnar epithelium3 ciliated columnar epithelium4
keel is characteristic of the flowers of 1 gulmohur2 cassia3 calotropis4 beanbean
membrane-bound organelles are absent in 1 saccharomyces2 streptococcus3 chlamydomonas4
one example of animals having a single opening to the outside that serves both as mouth as well as anus is1 octopus2 asterias3 ascidia4