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For the following questions answer them individually
Secondary xylem and phloem in dicot stem are produced by
Axillary meristems
Phellogen
Vascular cambium
Apical meristems
Sweet potato is a modified
Rhizome
Tap root
Adventitious root
Stem
Which of the following statements is correct?
Stems are usually unbranched in both Cycas and Cedrus.
Horsetails are gymnosperms
Seleginella is heterosporous, while Salavinia is homosporous
Ovules are not enclosed by ovary wall in gymnosperms
Casparian strips occur in
Endodermis
Cortex
Pericycle
Epidermis
Plants having little or no secondary growth are
Cycads
Conifers
Deciduous angiosperms
Grasses
Nissl bodies are mainly composed of
Free ribosomes and RER
Nucleic acids and SER
DNA and RNA
Proteins and lipids
Which of these statements is incorrect ?
Oxidative phosphorylation takes place in outer mitochondrial membrane.
Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
Glycolysis occurs in cytosol.
Enzymes of TCA cycle are present in mitochondrial matrix.
Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as
Nucleosome
Plastidome
Polyhedral bodies
Polysome
Which of the following terms describe human dentition ?
Pleurodont, Diphyodont, Heterodont
Pleurodont, Monophyodont,Homodont
Thecodont, Diphyodont, Heterodont
Thecodont, Diphyodont, Homoedont
Which of the following events does not occur in rough endoplasmic reticulum ?
Phospholipid synthesis
Cleavage of signal peptide
Protein glycosylation
Protein folding
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