Cell Structure and Function [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Biology]: Questions 240 - 246 of 460

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Question 240

Question MCQ▾

A mature sieve tube differs from a vessel -

Choices

Choice (4)Response

a.

In lacking a functional nucleus

b.

Being nearly dead

c.

Lacking cytoplasm

d.

Absence of lignified walls

Edit

Question 241

Question MCQ▾

In monocotyledonous roots, the Histogen present at the apex of the root tip is

Choices

Choice (4)Response

a.

Plerome

b.

Dermatogen

c.

Calyptrogen

d.

Procambium

Edit

Question 242

Question MCQ▾

Vessels differ from tracheids -

Choices

Choice (4)Response

a.

Because they conduct water

b.

In being living

c.

In being derived from a single cell

d.

In having vertical row of cells with cross walls dissolved

Edit

Question 243

Question MCQ▾

Flesh of a fruit is mostly made up of

Choices

Choice (4)Response

a.

Parenchyma

b.

Collenchyma

c.

Sclereids

d.

Meristem

Edit

Question 244

Question MCQ▾

Plate meristem shows-

Choices

Choice (4)Response

a.

Three dimensional divisions

b.

periclinal & anticlinal divisions in one plane

c.

Anticlinal divisions in two planes at right angle to each other

d.

Anticlinal divisions in one plane

Edit

Question 245

Question MCQ▾

Sclerenchymatous cells in their cell walls have large percentage of -

Choices

Choice (4)Response

a.

Cellulose

b.

Lignin

c.

Silica

d.

Pectin

Edit

Question 246

Question MCQ▾

Plastochron is

Choices

Choice (4)Response

a.

Region of origin of stem branch

b.

Period between initiation of two successive leaf primordia

c.

Distance between two successive leaf primordia

d.

Region of origin of root branch

Edit