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Published on: 05/11/2020
12th Standard Botany - Asexual and Sexual Reproduction in Plants 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.
Assertion (A): Epidermis is protective in function.
Reason (R): Epidermis is outermost unilayer of another wall.
A is correct R is incorrect.
R explains A.
Both A and R are incorrect.
Both A and R are correct. R does not explain A.
2.
Identify the mismatched pair:
Epidermal layer - Protective infunction
Eridothecium layer - Helps in dehiscence of anther
Middle layer - Persistent layer
Tapetum - Nutritive in function
3.
Statement 1: Primary sporogenous cell functions as megaspore mother cell.
Statement 2: Megaspore mother cell undergoes mitotic division producing megaspores.
Statement 1 is correct and statement 2 is incorrect.
Statement 1 is incorrect and statement 2 is correct.
Both the statements 1 and 2 are correct.
Both the statements 1 and 2 are incorrect.
4.
The most common type of ovule noticed in dicots and monocots is
Orthotropous
Anatropous
Campylotropous
Amphitropous
5.
Pick out the non-spermous seed
Wheat
Sunflower
Bean
Orchids
6.
Which of the following aquatic plant is popularly known as the "Terror of Bengal"?
Eichhornia crassipes
Vallisneria spiralis
Pistia stratiotes
Zostera marina
7.
8.
Which of the following represent megagametophyte?
Ovule
Embryo sac
Nucellus
Endosperm
9.
Arrange the layers of anther wall from locus to periphery
Epidermis, middle layers, tapetum, endothecium
Tapetum, middle layers, epidermis, endothecium
Endothecium, epidermis, middle layers, tapetum
Tapetum, middle layers endothecium epidermis
10.
An eminent Indian embryologist is ______.
S.R. Kashyap
P. Maheswari
M.S. Swaminathan
K.C. Mehta
1.
(b)
R explains A.
2.
(c)
Middle layer - Persistent layer
3.
(a)
Statement 1 is correct and statement 2 is incorrect.
4.
(b)
Anatropous
5.
(c)
Bean
6.
(a)
Eichhornia crassipes
7.
(a)
8.
(b)
Embryo sac
9.
(d)
Tapetum, middle layers endothecium epidermis
10.
(b)
P. Maheswari
12th Standard Syllabus & Materials
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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
