NEET Biology Solved Question Paper 2008

Multiple Choice Questions

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Apical dominance is caused by

  • auxin

  • gibberellin

  • kinetin

  • ABA

A.

auxin

In most of the plants, as the apical bud grows, the growth of lower axillary buds is suppressed. Removal of apical bud results in the growth of lower buds. The auxin (IAA) of the terminal bud inhibits the growth of lateral buds. This phenomenon is known as apical dominance.

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    In CAM plants, CO2 acceptor is

    • RuBP

    • PEP

    • OAA

    • PGA

    Answer

    Which one of the following is a natural growth inhibitor?

    • NAA

    • ABA

    • IAA

    • GA

    Answer

    Root hair absorbs water from soil through

    • turgor pressure

    • ion exchange

    • osmosis

    • DPD

    Answer

    During DNA replication in prokaryotes DNA is anchored to

    • chromosome

    • mesosome

    • nucleolus

    • ribosome

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

    • Chlorosis

    • Etiolation

    • Shortening of internodes

    • Necrosis

    Answer

    DCMU 

    • inhibits PS- I

    • inhibits PS- II

    • destroy chloroplast

    • inhibits oxidative phosphorylation

    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

    A genophore is made up of 

    • a single double stranded DNA

    • a single stranded DNA

    • RNA and histones

    • histones and non- histones

    Answer
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    Iodine is obtained from 

    • Laminaria

    • Chlorella

    • Polysiphonia

    • Porphyra

    Answer