Palisade parenchyma is absent in leaves of  from Biology Biolo

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 Multiple Choice QuestionsMultiple Choice Questions

31.

Which one of the following is wrongly matched?

  • Puccinia - Smut

  • Root - Exarch protoxylem

  • Cassia - Imbricate aestivation

  • Cassia - Imbricate aestivation

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32.

Virus envelope is known is 

  • capsid

  • virion

  • nucleoprotein

  • nucleoprotein

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33.

An example of endomycorrhiza is 

  • Nostoc

  • Glomus

  • Agaricus

  • Agaricus

441 Views

34.

Select the correct combination of the statement (A-D) regarding the characteristics of certain organisms.

A. Methanogens are Archaebacteria, which produce methane in marshy areas.
B. Nostoc is a filamentous blue-green algae, which fixes atmospheric nitrogen.
C. Chemosynthetic autotrophic bacteria synthesise cellulose from glucose.
D. Mycoplasma lacks a cell wall and can survive without oxygen.

  • B, C

  • A, B,C

  • B, C, D

  • B, C, D

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35.

Which one of the following has haplontic life cycle?

  • Funaria

  • Polytrichum

  • fully developed foetus and placenta

  • fully developed foetus and placenta

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36.

Phylogenetic system of classification is based on 

  • evolutionary relationships

  • morphological features

  • chemical constituents

  • chemical constituents

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37.

Palisade parenchyma is absent in leaves of 

  • sorghum

  • mustard

  • soybean

  • soybean


A.

sorghum

Sorghum (family-Poaceae) is a monocot plant. The leaves of monocot do not contain palisade parenchyma because the mesophyll of monocot leaf is not differentiated into palisade and spongy parenchyma, all being thin walled, chlorophyllous and irregularly compactly arranged with fewer intercellular spaces.

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38.

T O Diener discovered a

  • free infectious RNA

  • free infectious DNA,

  • infectious protein

  • infectious protein

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39.

Peripatus is a connecting link between

  • Ctenophora and Platyhelminthes

  • Mollusca and Echinodermata

  • Annelida and Arthropoda

  • Annelida and Arthropoda

631 Views

40.

Trichoderma harzianum has proved a useful microorganism for 

  • bioremediation of contaminated soils

  • reclamation of wastelands

  • gene transfer in higher plants

  • gene transfer in higher plants

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