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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
apomictic embryos in citrus arise from1 synergids2 maternal sporophytic tissue in ovule3 antipodal cells4 diploid eggmaternal sporophytic tissue in
the genetically-modified gm brinjal in india has been developed for1 insect-resistance2 enhancing shelf life3 enhancing mineral content4
which one of the following statements about human sperm is correct1 acrosome has a conical pointed structure used for piercing and penetrating the
which one of the following does not follow the central dogma of molecular biology1 pea2 mucor3 chlamydomonas4 hivhiv is the central dogma of
satellite dna is useful tool in1 organ transplantation2 sex determination3 forensic science4 genetic engineeringforensic
the second maturation division of the mammalian ovum occurs1 shortly after ovulation before the ovum makes entry into the fallopian tube2 until after
photoperiodism was first characterised in1 tobacco2 potato3 tomato4 cottontobacco is the first in whic photoperiodism
the energy - releasing metabolic process in which substrate is oxidised without an external electron acceptor is known as1 glycolysis2 fermentation3
the scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons1 cotyledon2 endosperm3 aleurone
the plasma membrane consists mainly of1 phospholipids embedded in a protein bilayer2 proteins embedded in a phospholipid bilayer3 proteins embedded
if for some reason our goblet cells are non-functional this will adversely affect1 production of somatostatin2 secretion of sebum from the sebaceous
the main arena of various types of activities of a cell is1 plasma membrane2 mitochondrian3 cytoplasm4
which two of the following changes a - d usually tend to occur in the plain dwellers when they move to high altitudes 3500 m or more1 enhance in red
the common nitrogen-fixer in paddy fields is1 rhizobium2 azospirillum3 oscillatoria4 frankiaazospirillum is the common nitrogen-fixer in paddy
during mitosis er and nucleolus begin to disappear at1 late prophase2 early metaphase3 late metaphase4 early prophaselate prophase
the nerve centres which control the body temperature and the urge for eating recontained in1 hypothalamus2 pons3 cerebellum4 thalamushypothalamus
low ca in the body fluid may be the cause of1 tetany2 anaemia3 angina pectoris4 gout tetany cause low
abo blood groups in humans are controlled by the gene i it has three alleles - ia ib and i as there are three dissimilar alleles six different
transfer of pollen grains from the anther to the stigma of another flower of the similar plant is known