Biology - Mock Test 178

Question 1771

Compared to the diametre of metaxylem the diametre of protoxylem is?

A) Larger B) Smaller C) Broader D) Angular

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Question 1772

In trachaea the end walls are?

A) Continuous B) Thick C) Discontinuous D) Absent

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Question 1773

In T.S. the trachaea appears?

A) Isodiametric B) Pentagonal C) Circular D) Hexagonal

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Question 1774

In T.S. the tracheid appears?

A) Square B) Round C) Polygonal D) Oval

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Question 1775

In maize stem the vascular bundles are?

A) Arranged in a ring B) Scattered-irregularly C) Arranged in two ring D) Scattered but smaller towards periphery

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Question 1776

Which of the following is absent in the phloem of monocots ?

A) Companion cells B) Phloem parecnchyma C) Sieve cell D) Phloem sclerenchyma

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Question 1777

The last produced secondary xylem remains located near?

A) Medulla B) Primary phloem C) Cambium ring D) Primary xylem

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Question 1778

Companion cells are?

A) Living and non-nucleated B) Dead and non-nucleated C) Dead but nucleated D) Living and nucleated

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Question 1779

In dicot leaves the vascular bundles are?

A) conjoint,open B) Radial,closed C) conjoint,closed D) Radial,open

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Question 1780

Secondary meristem gets activated from?

A) Primary meristem B) Mature permanent tissue C) Apical meristem D) Intercalary meristem

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