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Problem Solving Assessment(PSA)

Question-1
____________ help in providing buoyancy to the aquatic plants.

(A) Chlorenchyma	(B) Aerenchyma
(C) Sclerenchyma	(D) None of these

Question-2
__________ brings about an increase in the width or girth of the organs.

(A) Intercalary meristem	(B) Lateral Meristem
(C) Apical meristem	(D) None of these

Question-3 The walls of cork cells are heavily thickened by the deposition of __________________.

(A) Chitin	(B)Liginin
(C)Suberin	(D)None of these

Question-4
The ___________ tissue binds the skin with underlying parts.

(A) Areolar connective tissue	(B) Adipose connective tissue
(C) Tendon	(D) None of these

Question-5
_________ helps in the exchange of gases.

(A) Stomata	(B)Epidermis
(C)Cork	(D)None of these

Question-6
Xylem and phloem together constitute the ___________.

(A) Simple tissue	(B) Conducting tissue
(C) Vascular tissue	(D) None of these

Question-7
The walls of Sclerenchyma cells are thick due to the presence of ___________________.

(A) Fibres	(B) Stone cells
(C) Lignin	(D) none of these

Question-8
The meristem that occurs at the base of the internodes in monocots is

(A) Apical meristem	(B) Intercalary meristem
(C) Lateral meristem	(D) None of these

Question-9
The body of an adult human being contains about ____________________ litres of blood.

(A) 5 litres	(B) 7 litres
(C) 6 litres	(D) None of these

Question-10
Lacunae is seen in

(A) Cartilage	(B) Ligaments
(C) Tendons	(D) None of these

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Std 9

CBSE

Practice in Related Chapters
Tissues
The Fundamental Unit Of Life
Diversity In Living Organisms
Why Do We Fall Ill
Natural Resources