DSSSB TGT c9celldiscovery — practice questions
12 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice DSSSB TGT c9celldiscovery in the app →Per NCERT Class 9 Science, who FIRST observed cells in 1665 — using a self-designed microscope on a thin slicePer NCERT, what is the LIMIT OF RESOLUTION of the human eye — the closest distance at which two points appear Per NCERT, what does an ELECTRON microscope use to image cell structures at the nanometre scale — instead of vPer NCERT, if both the eyepiece and objective lens of a light microscope have magnifying power 10X, what is thPer NCERT, in 1838 which German BOTANIST reported that all PLANTS are made up of cells — a foundational claim Per NCERT, in 1839 which German ZOOLOGIST found that all ANIMALS are also made up of cells — extending cell thPer NCERT, in 1855 which scientist added the third tenet of cell theory — that NEW CELLS ARISE ONLY FROM PRE-EPer NCERT, which of these is a tenet of the CLASSICAL CELL THEORY?Per NCERT, what defines a PROKARYOTIC cell — in contrast to a eukaryotic cell?Per NCERT, what defines a EUKARYOTIC cell?Per NCERT, what are THERMOPHILES — referenced in the chapter's discussion of life's origin in hot springs?Per NCERT, what is the LEVEL of organisation HIGHER than cells in multicellular organisms — formed by groups o