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TN 12th Computer Applications வலையமைப்பு வடமிடல் Sample Question Papers Study Material - QB365 Set A
Published on: 27/08/2022
QB365 provides a detailed and simple solution for every Possible Creative Questions in Class 12 Biology Subject - Botany - Asexual and Sexual Reproduction in Plants, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
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.
Generally, the pollen grains are liberated from another at ___________
2-celled stage
4-celled stage
6-celled stage
8-celled stage
2.
The most common type of ovule noticed in dicots and monocots is
Orthotropous
Anatropous
Campylotropous
Amphitropous
3.
Which of the following plant was introduced as a contaminant into India along with wheat?
Parthenium hysterophorus
Zea mays
Rosa indica
Mangifera indica
4.
Which of the following characters does not exist in Ornithophilous flowers?
Huge sized flowers
Bright coloured
Scented flowers
Nectar is secreted in large
5.
Select the wrong statement(s) regarding cross-pollination.
(a) Pollination depends on external agent and so it is certain.
(b) New varieties are produced.
(c) Continuous cross-pollination leads to weaker progeny.
(d) Germination capacity is highly declined.
a and d
b and c
a, band d
a, c and d
6.
Which is not a part of mature seed?
Funiculus
Testa and tegmen
hilum
Chalaza
7.
The type of endosperm noticed in Hydrilla seed is ___________
Ruminate endosperm
Nuclear endosperm
Cellular endosperm
Helobial endosperm
8.
Pick out the non-spermous seed
Wheat
Sunflower
Bean
Orchids
9.
Cleavage polyembryony is noticed in _________________
Orchids
Casuarina
Balanophora
Syzygium
10.
Name the person who discovered the pollen tube?
E. Strasburger
Hofmeister
Nehemiah Grew
G.B. Amici
11.
Innermost layer of anther wall is ________________
Endothecium
Endothecum
Endothelium
Tapetum
12.
A typical anther is ________________
Bisporangiate
Tetrasporangiate
Unisporangiate
Multisporangiate
13.
The genetic ability of a plant cell to produce the entire plant is said to be ________________
Multipotency
Totipotency
Pluripotency
Differentiation
14.
Which of the following aquatic plant is popularly known as the "Terror of Bengal"?
Eichhornia crassipes
Vallisneria spiralis
Pistia stratiotes
Zostera marina
15.
The unit of reproductive structure used in vegetative propagation is called as __________________
Diplospores
Aplanospores
Diaspores
Conidiospores
1.
(a)
2-celled stage
2.
(b)
Anatropous
3.
(a)
Parthenium hysterophorus
4.
(c)
Scented flowers
5.
(d)
a, c and d
6.
(d)
Chalaza
7.
(d)
Helobial endosperm
8.
(c)
Bean
9.
(a)
Orchids
10.
(d)
G.B. Amici
11.
(d)
Tapetum
12.
(a)
Bisporangiate
13.
(b)
Totipotency
14.
(a)
Eichhornia crassipes
15.
(c)
Diaspores
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