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11th Biology Monthly Test - 2 ( Bio - Botany - Secondary Growth )

MABS Institution

11th Biology Monthly Test - 2 ( Bio - Botany - Secondary Growth )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

____________ is a fossil resin.

Gum Arabic
Amber
Turpentine
Latex

Usually, the monocotyledons do not increase their girth, because

They possess actively dividing cambium
They do not possess actively dividing cambium
Ceases activity of cambium
All are correct

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

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

Gymnosperm wood is known as _______________

non porous wood
hard wood
porous wood
sap wood

Canada balsam is made from

gum
tannin
latex
resin

Identify the character which is found in Autumn wood.

produces large number of xylem elements.
vessels have wide lumen
wood is darker in colour
cambium is very active

Canada balsam is obtained from

Abies
Haematoxylin
Quercus
Cinchona

In dicot root, periderm originates from ____________

cortex
pericycle
xylem
medullary rays

In the diagram of lenticel identify the parts marked as A, B, C, D

A. phellem, B. Complementary tissue, C. Phelloderm, D. Phellogen.
A. Complementary tissue, B. Phellem, C. Phellogen,D. Phelloderm.
A. Phellogen, B. Phellem, C. Phelloderm, D. complementary tissue
A. Phelloderm, B. Phellem, C. Complementary tissue, D. Phellogen

Bark does not include ____________

cortex
periderm
pith
secondary phloem

Part - B

Generic 2 - Answer All Question

Name the trees which yield the following.
(a) Cork
(b) Rubber

Differentiate Porous or Hard wood and Non porous or Soft wood ?

What is Cinnamon?

Distinct Annual rings are not found in plants found in seashore region. Justify.

How the age of a plant can be calculated?

What is the Significance of bark?

What does the periderm consist of?

In a forest, if the bark of a tree is damaged by the horn of a deer, How will the plant overcome the damage?

Name the tissues present in the bark.

In which season the vessels of angiosperms are larger in size, why?

Part - C

Generic 3 - Answer All Question

What is amber?

What is Turpentine?

Mention two important products obtained from bark.

A cross section of tree trunk contains 60 lighter and 60 darker rings. Determine the age of the tree and justify.

How are barks classified?

Differentiate Phellem and Phelloderm.

What is Gum Arabic?

What is Haematoxylin?

Do gymnosperms and angiosperms have tylosoids?

Write the differences between vascular cambium and cork cambium?

Part - D

Generic 5 - Answer All Question

List the differences between Sap wood and Heart wood?

A transverse section of the trunk of a tree shows concentric rings which are known as growth rings. How are these rings formed? What is the significance of these rings?

Continuous state of dividing tissue is called meristem. In connection to this, what is the role of lateral meristem?

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