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31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3


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25 Questions MCQ Test Biology 31 Years NEET Chapterwise Solved Papers | 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 for NEET 2022 is part of Biology 31 Years NEET Chapterwise Solved Papers preparation. The 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 questions and answers have been prepared according to the NEET exam syllabus.The 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 below.
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31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 1

Bordered pits are found in

[1993]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 1

The walls of xylem vessels are lignified and bordered pits are common in the walls.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 2

Which exposed wood will decay faster

[1993]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 2

Sapwood is less durable because it is susceptible to attack by pathogen and insects. It is physiologically active and conduction of water takes place through it. Heartwood is not attacked by pathogens and insects as it is physiologically inactive. It is filled with tannins, resins and gums which are not preferred by insects and pathogens.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 3

Abnormal/anomalous secondary growth occurs in

[1993]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 3

Abnormal secondary growth occurs in some arborescent monocots (eg. : Dracaena, Yucca)

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 4

A bicollateral vascular bundle is characterised by

[1992]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 4

Bicollateral vascular bundles have phloem in both outer and inner side of xylem. These type of bundles occur in cucurbitaceae.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 5

Commercial cork is obtained from

[1991]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 5

Quercus suber (Cork oak or Bottle cork) possess cork cells. Cork cells are dead, suberized and impervious to water and air, compactly arranged with no intercellular spaces.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 6

An organised and differentiated cellular structure having cytoplasm but no nucleus is 

[1991]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 6

Internally, sieve tubes possess peripheral layer of cytoplasm and are devoid of nucleus. They are living cells. Cell walls of sieve tubes are thickened than surrounding parenchyma cells.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 7

Angular collenchyma occurs in

[1991]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 7

With providing mechanical strength, collenchyma also provides flexibility to the organ and allow their bending eg. : Cucurbita.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 8

Where do the casparian bands occur?

[1990, 94]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 8

Endodermis or innermost layer of cortex has casparian strips in roots. It is called starch sheath in dicot stems. It separate cortex from stele. The cell walls are thickened at the corners in angular collenchyma.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 9

Vascular cambium produces

[1990, 92]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 9

Vascular cambium produces secondary xylem on the inner side and secondary phloem to the outer side.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 10

What is true about a monocot leaf

[1990]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 10

In monocot leaves, the mesophyll cells are undifferentiated.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 11

For union between stock and scion in grafting which one is the first to occur?

[1990]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 11

In grafting, union between stock and scion produces undifferentiated mass of cells called callus.
Grafting is a method of plant propagation widely used in horticulture, where the tissues of one plant are encouraged to fuse with those of another. It is most commonly used for the propagation of trees and shrubs grown commercially. Grafting is limited to dicots and gymnosperms. Monocots lack the vascular cambium required.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 12

Pericycle of roots produces

[1990]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 12

Pericycle in roots is active in the formation of root branches or lateral roots.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 13

Collenchyma occurs in

[1990]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 13

Collenchyma is abundant in climbing stems providing mechanical strength.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 14

Collenchyma occurs in the stem and petioles of 

[1990]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 14

Collenchyma provides mechanical strength to young dicot stems, petioles and leaves.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 15

Monocot leaves possess

[1990]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 15

Intercalary meristems are derived from apical meristems and separated from the same by permanent cells. They are responsible for localised growth.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 16

Cork cambium and vascular cambium are

[1990, 95]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 16

Cork cambium and vascular cambium are responsible for secondary growth which increases the girth of the stem.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 17

Which is the correct fact about diffuse or ring porous wood?

[1989]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 17

Ring porous wood is more advanced than diffuse porous wood as it provides for better translocation when requirement of plant is high.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 18

Sieve tubes are suited for translocation of food because they possess

[1989]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 18

Sieve tubes are elongated tubular conducting channels of phloem. The end walls possess many small pores and have thin cellulosic wall. The lumen is broad in nature.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 19

Which one yields fibres?

[1988]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 19

Commercial fibres are obtained from Cocos nucifera (coconut) also called surface fibres and occur on surface of seeds.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 20

Death of protoplasm is a pre-requisite for a vital function like

[1989]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 20

Xylem performs the function of transport of water or sap inside the plant and it is a dead tissue i.e. devoid of protoplasm.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 21

Organisation of stem apex into corpus and tunica is determined mainly by

[1989]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 21

Cells of tunica divide anticlinally to form the outer layer, cells of corpus undergo division in different planes.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 22

Pith and cortex do not differentiate in

[1988]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 22

The ground tissue in monocot stem do not show distinction into cortex, endodermis, pericycle, pith and pith rays.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 23

Cork is formed from

[1988]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 23

Phellogen present in outer cortical cells produces cork or phellem on the outer side which consists of dead and compactly arranged rectangular cells that possess suberised cell walls. Which causes them to become  buoyant. Phellogen also cuts off  cells on innerside called as phelloderm or secondary cortex.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 24

Tunica corpus theory is connected with

[1988]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 24

The shoot apex or stem apical meristem has two zones, outer tunica and inner corpus. This theory was given by Schmidt 1924.

31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 25

Which meristem helps in increasing girth?

[1988]

Detailed Solution for 31 Years NEET Previous Year Questions: Anatomy Of Flowering Plants - 3 - Question 25

Lateral meristems occur on the sides of stem and help in increasing girth of stem and root. It divides only periclinally or radially and is responsible for increase in girth or diameter.

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