NEET Biology Solved Question Paper 2008

Multiple Choice Questions

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In CAM plants, CO2 acceptor is

  • RuBP

  • PEP

  • OAA

  • PGA

B.

PEP

The process of photosynthesis in C4 plants and CAM (Crassulacean Acid Metabolism) is same. Instead of spatial separation of initial PEP, case fixation and final Rubisco fixation of CO2. Both the steps occur in same cell but at different times, night and day.

Eg, Opuntia, pinapple, Vanilla. PEP (Phosphoenol Pyruvate) is the first acceptor of CO2 in CAM plants.

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    Apical dominance is caused by

    • auxin

    • gibberellin

    • kinetin

    • ABA

    Answer

    A genophore is made up of 

    • a single double stranded DNA

    • a single stranded DNA

    • RNA and histones

    • histones and non- histones

    Answer

    Which of the following is not caused by deficiency of mineral?

    • Chlorosis

    • Etiolation

    • Shortening of internodes

    • Necrosis

    Answer

    Which one of the following is a natural growth inhibitor?

    • NAA

    • ABA

    • IAA

    • GA

    Answer
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    DCMU 

    • inhibits PS- I

    • inhibits PS- II

    • destroy chloroplast

    • inhibits oxidative phosphorylation

    Answer

    Root hair absorbs water from soil through

    • turgor pressure

    • ion exchange

    • osmosis

    • DPD

    Answer

    Ginger is an underground stem. It is distinguished from root because

    • it lacks chlorophyll

    • it stores food

    • it has nodes and internodes

    • it has xylem and vessels

    Answer

    During DNA replication in prokaryotes DNA is anchored to

    • chromosome

    • mesosome

    • nucleolus

    • ribosome

    Answer
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    Iodine is obtained from 

    • Laminaria

    • Chlorella

    • Polysiphonia

    • Porphyra

    Answer