Botany Objective Questions and Answers for Competitive Exams | Page-3

Questions
21 Flower less plants are termed as:
A Cryptogams
B Thallophytes
C Bryophytes
D Phanerogams

Answer: Option [A]
22 Bio-diesel is mostly produced by:
A Liliaceae
B Malvaceae
C Myrtaceae
D Euphorbiaceae

Answer: Option [D]

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23 The most abundant enzyme in the living world is
A DNAse
B Rubisco
C Zymase
D Invertase

Answer: Option [B]
24 What is the impact of advancing glaciers on the rings of trees?
A They become concentric
B Their shape is distorted
C They become widely spaced
D They are immune to this change

Answer: Option [B]
25 Insectivorous plants grow in soil deficient in
A Water
B Magnesium
C Nitrogen
D Calcium

Answer: Option [C]
26 The red, orange and yellow colours of leaf is due to:
A Aldehydes
B Tannis
C Lignins
D Carotenoid

Answer: Option [D]
27 Bio-magnification implies
A Food is magnified
B Light is magnified
C Toxic matters are magnified
D Living beings are magnified

Answer: Option [C]
28 Which of the following is an insectivorous plant?
A Drosera
B Orobanche
C Rafflesia
D Balanophora

Answer: Option [A]
29 Protein part of enzyme is known as
A Holoenyme
B Apoenzyme
C Isoenzyme
D All the above

Answer: Option [B]
30 Entomology is the study of
A Fungi
B Fossils
C Insects
D Birds

Answer: Option [C]

NCERT Class 12 Biology Solved Multiple Choice Questions

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