Dhaka Board 23

1) If 'A' enters the cell of 'B'

I) enzyme of 'B' cell will destroy DNA of 'A

ii) formation of 'A' will take place inside 'B

iii) finally the wall of 'B' cell will rupture

Which one is correct?

a) i & ii b) i&iii c) ii&iii d)i,ii&iii

Ans: c

2)In which of the following the Presence of guard cells are observed?

A) Hydathode b)Stem hair

C) Colleters d) Root hair

Ans a

M group => Br. EBr. ⚧ P2 A3+3 G_1

3) Which of the following is correct regarding the internal structure of roots of 'M' group plant in the stem?

A) Xylem is endarch

B) Hypodermis is present

C) Pith large and distinct

D) Pericycle is few layered

Ans c

Which of the following tissue cells are small in size and almost equal in length and width?

A) Meristemetic tissue b) Simple tissue

C) Complex tissue d) Secretory tissue

Ans a

Which is called the motion phase?

A) prophase

B) metaphase

C) anaphase

D) telophase

C