set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the followings are correct order of hierarchy?

a) Phylum, division, genus and class

b) Kingdom, division, phylum, genus and species

c) Kingdom, genus, class, phylum and division

d) Phylum, kingdom, genus, species and class

Question : 2

The reason of large-scale diversity among the organisms is

a) Co-operation

b) Mutation

c) Adaptation

d) Polyploidy

Question : 3

Which of the following is responsible for mechanical support and enzyme transport ?

a) Mitochondria

b) Cell membrane

c) Dictyosome

d) ER

Question : 4

Mitochondria supply most of the necessary biological energy by

a) Oxidizing substrates of TCA cycle

b) Breaking down of sugar

c) Reducing NADP

d) Breaking down of protein

Question : 5

Which one of the following is a freeliving bacterium that helps in nitrogen fixation in soil?

a) Anabaena

b) Azotobacter

c) Azolla

d) Nostoc

Question : 6

Xylem functions as a conducting tissue for water and minerals from _________to the ______and__________.

a) leaves, stems, leaves

b) stems, roots, leaves

c) roots, stems, leaves

d) leaves, stems, roots