Free Anatomy Of Flowering Plants (Weekly Quiz: 2) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Anatomy Of Flowering Plants (Weekly Quiz: 2) Time:

Question-1

In land plants, the guard cells differ from other epidermal cells in having :

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Guard cells differ from epidermal cells in having chloroplast. The cell wall of guard cells are not uniform, inner walls are thicker than the outer walls, epidermal cells are uniformly thin.


Question-2

Cortex is the region found between

(a)

(b)

(c)

(d)


Question-3

Tracheids differ from other tracheary elements in :

(a)

(b)

(c)

(d)


Question-4

Cork cambium and vascular cambium are

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Cork cambium and vascular cambium are lateral meristem. Lateral meristems are responsible for increase in thickness of the axis.


Question-5

Choose the correct labelling of (A – J) in the given figure of T.S. of monocot root. A C D F G H I B E

anatomy-of-flowering-plants-class-11-Chapter-6-neet-mcq-5-6-80-57

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

In the given figure of T. S of monocot root, the part marked as A, B, C, D, E, F, G, H and I are respectively root hairs, epiblema, cortex, endodermis, pericycle, phloem, protoxylem, pith and metaxylem.

Monocot root do not undergo any secondary growth. It consists of thin walled cells in the epiblema; unicellular root hairs, passage cells and casparian thickenings in the endodermis; parenchyma cells in the pericycle; conjuctive tissue; distinct pith and radial vascular bundles with polyarch condition and an exarch xylem. Cuticle and stomata are absent.


Question-6

A common structural feature of vessel elements and sieve tube elements is

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Xylem vessels are hollow, elongated cells with open ends and pitted walls. Cells walls are lignified. At maturity nucleus is absent in vessels. Sieve tube members are long, slender, tube-like cells joined end to end, to form long tubular channels – the sieve tubes. Sieve tube members possess specialized sieve areas on the end walls called sieve plate. Young sieve tube members have abundant cytoplasm but there is no nucleus. The nucleus disintegrates during their development.


Question-7

Vessels are found in

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Vessels are long tubelike structures ideally suited for the conduction of water and solutes. These are made up of a row of cylindrical cells arranged in longitudinal series. The partition walls of these cells are perforated and as such the entire structure becomes tubelike. The region of the wall where perforations occur is known as the perforation plate. Vessels are found in the wood of almost all the angiosperms except certain primitive members of the order ranales (vessels dicots), e.g., Trochodendron, Tetracentron, Drimys, Pseudowintera, etc.

Vessels also occur in some pteridophytes, such as Selaginella and the members of order Gnetales of gymnosperms (e.g., Genetum, Ephedra and Welwitschia).


Question-8

Tracheids differ from other tracheary elements in

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Tracheids are elongated, dead cells with hard lignified walls, wide lumens and narrow walls with spiral, annular, reticulate, scalariform and pitted thickening but without perforated end walls of septa. That is, they have intact end walls, unlike vessels. Vessels are long cylindrical tube-like structures made of many cells, called vessel members, each with lignified walls and a large central cavity. Vessel members are interconnected through perforation in their common walls.


Question-9

In the diagram of T.S. of Stele of Dicot Root, the different parts have been indicated by alphabets. Choose the answer in which these alphabets correctly match with the parts they indicate.

anatomy-of-flowering-plants-neet-mcq-7-6-181

(a)

(b)

(c)

(d)


Question-10

Which of the following statements is true?

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Xylem is the principal water conducting tissue of the plant. It consists of four types of cells-tracheids, vessels, xylem fibres and xylem parenchyma. The tracheids and vessels together are known as tracheary elements. Tracheids are characteristic of all vascular plant. Tracheids originate from single cells. These are single elongated cells with tapering ends. The end walls are without perforations. Their length varies from 1 to 3 mm. Tracheids are devoid of protoplast, hence dead; fairly large cavity of these cells is without any contents. The wall of tracheids is moderately thick and usually lignified.


Molecular Basis Of Inheritance

Quiz 152

Biotechnology Principles And Processes

Quiz 153

Biotechnology And Its Applications

Quiz 154

Organisms And Populations

Quiz 155

Ecosystem

Quiz 156

NEET Biology Quiz

Topic Wise Quizzes

NEET Biology MCQ

Topic Wise Exercise

Today Quiz

Structural Organisation In Animals

This Week Quiz

Locomotion And Movement

This Month Quiz

Locomotion And Movement