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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 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): Anemophilous pollination occurs by animals.
Reason (R): Pollen grains are sticky for easy attachment on animals.
A is correct R is incorrect
R explains A.
Both A and R are incorrect.
Both A and Rare correct R does not explain A.
2.
Identify the mismatched pair:
(i) Sucker - Chrysanthemum
(ii) Bulbils - Agave
(iii) Stolon - Fragaria
(iv) Runner - Lilium
i only
ii only
iii only
iv only
3.
Assertion (A): Entomophily is the most common type of pollination.
Reason (R): Birds and animals bring out effective pollination.
Both A and R are incorrect.
A is correct R is incorrect.
R explains A.
Both A and R are correct. R is not a correct explanation for A.
4.
Which of the following plant was introduced as a contaminant into India along with wheat?
Parthenium hysterophorus
Zea mays
Rosa indica
Mangifera indica
5.
Cleavage polyembryony is noticed in _________________
Orchids
Casuarina
Balanophora
Syzygium
6.
The unit of reproductive structure used in vegetative propagation is called as __________________
Diplospores
Aplanospores
Diaspores
Conidiospores
7.
The scar left by funiculus in the seed is _______.
tegmen
radicle
epicotyl
hilum
8.
Choose the correct statement(s) about tenuinucellate ovule.
Sporogenous cell is hypodermal
Ovules have fairly large nucellus
Sporogenous cell is epidermal
ovules have single layer of nucellus tissue
9.
Identify the incorrect pair
sporopollenin - exine of pollen grain
tapetum – nutritive tissue for developing microspores
Nucellus – nutritive tissue for developing embryo
obturator – directs the pollen tube into micropyle
10.
Choose the correct statement from the following
Gametes are involved in asexual reproduction
Bacteria reproduce asexually by budding
Conidia formation is a method of sexual reproduction
Yeast reproduce by budding
1.
(c)
Both A and R are incorrect.
2.
(d)
iv only
3.
(d)
Both A and R are correct. R is not a correct explanation for A.
4.
(a)
Parthenium hysterophorus
5.
(a)
Orchids
6.
(c)
Diaspores
7.
(d)
hilum
8.
(a)
Sporogenous cell is hypodermal
9.
(c)
Nucellus – nutritive tissue for developing embryo
10.
(d)
Yeast reproduce by budding
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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
