11th Standard Syllabus & Materials

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11th Standard Botany - Secondary Growth English Medium Free Online Test One Mark Questions 2020 - 2021

Published on: 11/11/2020

Download Tamil Nadu 11th 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: 11th Standard - Biology

chapter: - Model Question paper

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Questions:

Multiple Choice Question

10 x 1 = 10

____________ is a fossil resin.

(a)

Gum Arabic

(b)

Amber

(c)

Turpentine

(d)

Latex

Choose the non living cells.
(i) phellem
(ii) phellogen
(iii) phloem
(iv) xylem vessel

(a)

i and ii

(b)

ii and iv

(c)

all the four

(d)

i and iv

A bark used as spice ___________

(a)

Pinus

(b)

Cinchona

(c)

Cinnamon

(d)

Morus

Lentieels are seen in ___________

(a)

Phellodenn

(b)

phellem

(c)

phellogen

(d)

epidermis

Canada balsam is made from __________

(a)

gum

(b)

tannin

(c)

latex

(d)

resin

Gymnosperm wood is known as _______________

(a)

non porous wood

(b)

hard wood

(c)

porous wood

(d)

sap wood

Quinine is obtained from the ____________ of the cinchona tree.

(a)

Root

(b)

resin

(c)

bark

(d)

gum

Living part of the wood is called __________

(a)

Duramen

(b)

Heart wood

(c)

Porous wood

(d)

Sap wood

What is the fate of primary xylem in a dicot stem showing extensive secondary growth?

(a)

It is retained in the centre of the axis

(b)

It gets crushed

(c)

May or may not get crushed

(d)

It gets surrounded by primary phloem

10.

Consider the following statements:
In spring season vascular cambium
i. Is less active
ii. Produces a large number of xylary elements
iii. Forms vessels with wide cavities of these,

(a)

(i) is correct but (ii) and (iii) are not correct

(b)

(i) is not correct but (ii) and (iii) are correct

(c)

(i) and (ii) are correct but (iii) is not correct

(d)

(i) and (ii) are not correct but (iii) is correct.