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Published on: 05/11/2020
12th Standard Botany - Plant Tissue Culture English Medium Free Online Test One Mark Questions with Answer Key 2020 - 2021
Download Tamil Nadu 12th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
Somatic hybridization is achieved through _________
Protoplast fusion
r-DNA technology
Transformation
Grafting
2.
The term used to define the ability of a cell to generate entire individual is
Pluripotent
Totipotent
Multipotent
Unipotent
3.
Identify the incorrect statement:
(a) Explants are surface sterilized
(b) Nutrient media are autoclaved
(c) Culture rooms are UV radiated for 15 minutes
(d) Glasswares and accessories are autoclaved
a only
b and c
d only
none of the above
4.
Identify the wrong statement:
Artificial seeds are stored for long time under cryopreservation
Somatic embryos are used for artificial seed production
Period of dormancy of artificial seeds is greatly reduced
Encapsulation of embryoids is done using cryoprotectant
5.
Assertion (A) : Protoplasts are cells devoid of cell wall.
Reason (R) : Secondary metabolites are synthesized by protoplasmic fusion.
Both A and R are correct but R is not a correct explanation to A
R explains A
A is correct R is incorrect
Both A and R are incorrect
6.
Identify the correct sequence regarding steps involved in PTC
Sterilization ➝ Incubation ➝ Inoculation ➝ Embryogenesis ➝ Hardening
Inoculation ➝ Induction ➝ Sterilization ➝ Hardening ➝ Embryogenesis
Induction ➝ Incubation ➝ Inoculation ➝ Hardening ➝ Sterilization
Sterilization ➝ Inoculation ➝ Incubation ➝ Embryogenesis ➝ Hardening
7.
The production of secondary metabolites require the use of _________.
Protoplast culture
Organ culture
Cell suspension culture
Virus free germ culture
8.
Solidifying agent used in plant tissue culture is _____.
Nicotinic acid
Cobaltous chloride
EDTA
Agar
9.
Select the incorrect statement from given statement.
A tonic used for cardiac arrest is obtained from Digitalis purpurea
Medicine used to treat Rheumatic pain is extracted from Capsicum annum
An anti malarial drug is isolated from Cinchona officinalis.
Anti-cancinogenic property is not seen in Catharanthus roseus.
10.
Micro propagation involves _____.
vegetative multiplication of plants by using micro-organisms.
vegetative multiplication of plants by using small explants.
vegetative multiplication of plants by using microspores.
Non-vegetative multiplication of plants by using microspores and megaspores.
1.
(a)
Protoplast fusion
2.
(b)
Totipotent
3.
(d)
none of the above
4.
(d)
Encapsulation of embryoids is done using cryoprotectant
5.
(c)
A is correct R is incorrect
6.
(d)
Sterilization ➝ Inoculation ➝ Incubation ➝ Embryogenesis ➝ Hardening
7.
(c)
Cell suspension culture
8.
(d)
Agar
9.
(d)
Anti-cancinogenic property is not seen in Catharanthus roseus.
10.
(b)
vegetative multiplication of plants by using small explants.
12th Standard Syllabus & Materials
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Tamilnadu Stateboard 12th Standard Subjects
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Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
Commerce
Economics
Maths
Chemistry
Physics
Computer Technology
History
Accountancy
Tamil
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