The common feature of mitochondria and plastids

(A) both are double membranous cell organelles

(B)Both contains 70s ribosomes

(C)both have dsDNA

(D)All of the above

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A number of organised flattened membranous sacs are called

(A)thylakoids

(B)starch granules

(C)Quantasomes

(D)None of these

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Chromatin can be stained with

(A)Basic dyes

(B)neutral dyes

(C)acidic dyes

(D)Crystal violet

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Chromatin can be observed in

(A)Interphase nucleus

(B)dividing nucleus

(C)Both A and B

(D)Nuclei of any stage

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Through the nuclear pore the movement of _____and ______takes place

(A)RNA and proteins

(B)DNA and RNA

(C)DNA and proteins

(D)RNA and carbohydrates

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Nucleus is absent in

(A)erythrocytes of mammals

(B)sieve tube cells of Vascular plants

(C)Both A and B

(D)Companion cells of vascular bundle

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Which of the following is true about nucleolus?

(A)membrane less structure

(B)active site for rRNA synthesis

(C)numerous in cells which are involved in protein synthesis

(D)All of the above

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Which of the following is true about chromosome

(A)nucleoprotein

(B)23 pairs in single human diploid cell

(C)Contains primary constriction

(D)All of these

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On what basis chromosomes have been divided into four classes.

(A)position of centromere

(B)position of primary constriction

(C)number of kinetochores

(D)Both A and B

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In which of the chromosomes two equal arms are present

(A)sub-metacentric chromosome

(B)metacentric chromosome

(C)acrocentric chromosome

(D)telocentric chromosome

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