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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
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