12th Standard Syllabus & Materials
12th Standard
TN 12th English Poem - 6 - Incident of the French Camp Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th English Prose - 6 - On the Rule of the Road Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th English Prose - 5 - The Chair Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th English Supplementary - 4 - The Midnight Visitor Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th English Poem - 4 - Ulysses Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th English Prose - 4 - The Summit Sample Question Papers Study Material - QB365 Set A
Published on: 05/11/2020
12th Standard Botany - Principles of Ecology English Medium Free Online Test One Mark Questions 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.
Utricularia is a __________.
Rooted floating hydrophyte
Submerged floating hydrophyte
Rooted submerged hydrophyte
Amphibious hydrophyte
2.
Statement 1: Ephemerals are drought evaders.
Statement 2: They are not true xerophytes.
Statement 1 is correct. Statement 2 is incorrect.
Statement 1 is incorrect. Statement 2 is correct.
Both the statements are correct.
Both the statements are incorrect
3.
The study of soil is called as __________
Lithotripsy
Lithosphere
Pedology
Pedigree analysis
4.
Autecology deals with the study of ___________.
Community
Population
Individual species
Niche of species
5.
Sticky glands of Boerhavia and Cleome support _______.
Anemochory
Zoochory
Autochory
Hydrochory
6.
The plant of this group are adapted to live partly in water and partly above substratum and free from water ______.
Xerophytes
Mesophytes
Hydrophytes
Halophytes
7.
8.
Read the given statements and select the correct option.
Statement A : Cattle do not graze on weeds of Calotropis.
Statement B : Calotropis have thorns and spines, as defense against herbivores.
Both statements A and B are incorrect.
Statement A is correct but statement B is incorrect
Both statements A and B are correct but statement B is not the correct explanation of statement A.
Both statements A and B are correct and statement B is the correct explanation of statement A.
9.
Which of the given plant produces cardiac glycosides?
Calotropis
Acacia
Nepenthes
Utricularia
10.
Arrange the correct sequence of ecological hierarchy starting from lower to higher level.
Individual organism → Population Landscape → Ecosystem
Landscape → Ecosystem → Biome → Biosphere
community → Ecosystem → Landscape → Biome
Population → organism → Biome → Landscape
1.
(b)
Submerged floating hydrophyte
2.
(c)
Both the statements are correct.
3.
(c)
Pedology
4.
(c)
Individual species
5.
(b)
Zoochory
6.
(c)
Hydrophytes
7.
(a)
8.
(b)
Statement A is correct but statement B is incorrect
9.
(a)
Calotropis
10.
(c)
community → Ecosystem → Landscape → Biome
12th Standard Syllabus & Materials
12th Standard
TN 12th English Supplementary - 3 - The Hour of Truth (Play) Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th English Poem - 3 - All the World’s a Stage Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th English Prose - 3 - In Celebration of Being Alive Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th English Supplementary - 2 - Life of Pi Sample Question Papers Study Material - QB365 Set A
Tamilnadu Stateboard 12th Standard Subjects
Maths
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
English
French
Tamilnadu Stateboard Standards
