The common feature of mitochondria and plastids

(1) both are double membranous cell organelles

(2)Both contains 70s ribosomes

(3)both have dsDNA

(4)All of the above

A number of organised flattened membranous sacs are called

(1)thylakoids

(2)starch granules

(3)Quantasomes

(4)None of these

Chromatin can be stained with

1. Basic dyes

2. neutral dyes

3. acidic dyes

4. Crystal violet

Chromatin can be observed in

(1)Interphase nucleus

(2)dividing nucleus

(3)Both A and B

(4)Nuclei of any stage

Through the nuclear pore the movement of _____and ______takes place

(1)RNA and proteins

(2)DNA and RNA

(3)DNA and proteins

(4)RNA and carbohydrates

Nucleus is absent in

1. erythrocytes of mammals

2. sieve tube cells of Vascular plants

3. Both A and B

4. Companion cells of vascular bundle

Which of the following is true about nucleolus?

(1)membrane less structure

(2)active site for rRNA synthesis

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

(4)All of the above

Which of the following is true about chromosome

1. nucleoprotein

2. 23 pairs in single human diploid cell

3. Contains primary constriction

4. All of these

On what basis chromosomes have been divided into four classes.

1. position of centromere

2. position of primary constriction

3. number of kinetochores

4. Both A and B

In which of the chromosomes two equal arms are present

(1)sub-metacentric chromosome

(2)metacentric chromosome

(3)acrocentric chromosome

(4)telocentric chromosome