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TN 12th Computer Applications மின்னணு தரவு பரிமாற்றம் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications மின் - வணிக பாதுகாப்பு அமைப்புகள் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications மின்னணு செலுத்தல் முறைகள் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications மின் - வணிகம் Sample Question Papers Study Material - QB365 Set A

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TN 12th Computer Applications திறந்த மூல கருத்துருக்கள் Sample Question Papers Study Material - QB365 Set A

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12th Standard Botany - Economically Useful Plants and Entrepreneurial Botany English Medium Free Online Test One Mark Questions 2020 - 2021

Published on: 05/11/2020

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.

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Std: 12th Standard - Biology

chapter: - Model Question paper

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Questions:

Multiple Choice Question

10 x 1 = 10

Statement 1: Aloevera belongs to the family Asphodelaceae.
Statement 2: Jasminum grandiflorum belongs to the family of Oleaceae.

(a)

Statement 1 is correct and Statement 2 is also correct

(b)

Statement 1 is correct and Statement 2 is incorrect

(c)

Statement 1 is incorrect and Statement 2 is correct

(d)

Both the Statements are incorrect

Statement 1: Chinese discovered the paper.
Statement 2: Eucalyptus and Casuarina are the widely used tree species for making paper pulp.

(a)

Statement 1 is correct and Statement 2 is also correct

(b)

Statement 1 is correct and Statement 2 is incorrect

(c)

Statement 1 is incorrect and Statement 2 is correct

(d)

Both the Statements are incorrect

Pigeon pea is the common name for _______

(a)

Vigna radiata

(b)

Vigna mungo

(c)

Cajanus cajan

(d)

Sorghum vulgare

Given below are the plant species and their parts used. Which is the incorrect pair(s)?
(i) Cajanus cajan : Seeds
(ii) Anacardium occidentale: nuts
(iii) Borassus flabellifer: Endosperm
(iv) Capsicum annum: leaves

(a)

i and ii

(b)

ii and iii

(c)

iii only

(d)

iv only

Paddy, Wheat and Sorghum, etc., comes under the category of cereals. All the members of cereals belong to which of the following family?

(a)

Fabaceae

(b)

Poaceae

(c)

Leguminoneae

(d)

Caesalpinaeceae

Which one of the following matches is correct?

(a)

Palmyra - Native of Brazil

(b)

Saccharum - Abundant in Kanyakumari

(c)

Steveoside - Natural sweetener

(d)

Palmyra sap - Fermented to give ethanol

Observe the following statements and pick out the right option from the following:
Statement I: The drug sources of Siddha include plants, animal parts, ores and minerals.
Statement II: Minerals are used for preparing drugs with long shelf-life.

(a)

Statement I is correct

(b)

Statement II is correct

(c)

Both statements are correct

(d)

Both statements are wrong

Find out the correctly matched pair.

(a)

Rubber-Shorea robusta

(b)

Dye-Lawsonia inermis

(c)

Timber-Cyperus papyrus

(d)

Pulp-Hevea brasiliensis

New world species of cotton _____.

(a)

Gossypium arboretum

(b)

G. herbaceum

(c)

Both a and b

(d)

Gossypium barbadense

10.

Consider the following statements and choose the right option.
i) Cereals are members of grass family.
ii) Most of the food grains come from monocotyledon.

(a)

(i) is correct and (ii) is wrong

(b)

Both (i) and (ii) are correct

(c)

(i) is wrong and (ii) is correct

(d)

Both (i) and (ii) are wrong