Tissues

Tissue Worksheet-7

11. A mature sieve tube is different from a vessel in

A. lacking a functional nucleus

B. absence of lignin in walls

C. being dead   

D. lacking cytoplasm.

12. Simple tissues are

A. parenchyma, xylem and collenchyma

B. parenchyma, collenchyma and sclerenchyma

C. parenchyma,xylem and sclerenchyma

Tissue Worksheet-8

21. Lignified cell wall is the characteristic feature of

A. phloem cells                             B. epidermal cells

C. cambial cells                            D. xylem cells

22. The strength and rigidity of a cell wall is due to the substance known as

A. suberin          B. cellulose        C. lignin             D. pectin

Tissue Worksheet-9

31. Muscles contain special proteins called

A. Tubulins                                    B. Contractile proteins

C. Carrier proteins                       D. Globulins

32. Intercalated disc is present in

A. Cardiac muscles

B. Straited muscles

C. Smooth muscles